2015 MRS Spring Meeting

Apr 6, 2015 ‐ Apr 10, 2015

The 2015 MRS Spring Meeting and Exhibit was held in San Francisco, California. Technical symposia were held within the following topical clusters: Energy, Nanomaterials, Electronics and Photonics, Soft and Biomaterials, and General – Fabrication and Characterization. Access to all of the content below is free – simply login with your MRS username and password for complete access. Don’t have a username and password? Create a free account.

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The scaling of silicon MOSFETs, DRAM, and Flash memory has already required the use of SiGe stressors, high-k dielectrics, metal gates and three-dimensional designs (FinFETs). Further progress requires even more new materials and device structures. For example, novel channel materials such as III-V, Ge, GaN, and transition metal dichalcogenides (TMD) are being investigated for future logic and power MOSFET devices. Future non-volatile memory options include resistive memory with multi-level memory state and 3D structures. This symposium emphasized not only the advances in materials and processing, but also the new device structures that are required for the new materials to provide substantial improvements in device performance.

Sessions Included:

Group III-Sb Metamorphic Buffer on Si for p-Channel all-III-V CMOS: Electrical Properties, Growth and Surface Defects (Apr 07, 2015 08:00 AM)

Kinetics and Structure of Nickelide Contact Formation to InGaAs Fin Channels (Apr 07, 2015 08:15 AM)

Recent Progress in Understanding the Electrical Reliability of GaN High-Electron Mobility Transistors (Apr 07, 2015 09:00 AM)

The Effect of ALD Temperature on Border Traps in Al2O3 InGaAs Gate Stacks (Apr 07, 2015 11:30 AM)

Atomic Layer Deposition of Crystalline SrHfxTi1-xO3 Directly on Ge (001) for High-K Dielectric Applications (Apr 09, 2015 02:15 PM)

Surface Characterization and Interface Defect Reduction on High-K/SiGe MOS Device (Apr 09, 2015 04:00 PM)

Palladium Memory Devices for Bio-Driven Sensing (Apr 09, 2015 04:30 PM)

Fermi Level Pinning in Metal/Al2O3/InGaAs Gate Stack (Apr 09, 2015 04:45 PM)

Characterization of Highly Resistive Nanoscale RRAM Contacts (Apr 08, 2015 08:15 AM)

Design and Optimization of Transition Metal Oxide-Based Resistive Switching Devices for Data Storage and Computing Systems (Apr 08, 2015 08:30 AM)

WSe2 and WTe2 Transition Metal Dichalcogenides Grown by Molecular Beam Epitaxy (Apr 08, 2015 02:00 PM)

Materials Structure and Performance of Epitaxial III-V Heterojunctions for Tunnel Field Effect Transistors (Apr 09, 2015 10:30 AM)

N-Type Polymer-Enabled Selective Dispersion of Semiconducting Carbon Nanotubes for Flexible CMOS-Like Logic Circuits (Apr 09, 2015 11:45 AM)

Efficiently utilizing the solar energy to produce electricity has been a subject of intensive research due to the rapid increase of global energy demand and the need to reduce the emission of greenhouse gases from fossil fuels. Breakthroughs are needed to produce low-cost and high-efficiency solar cells with good durability. Perovskite halides have recently emerged as a revolutionary light absorber system, leading to solar cell efficiencies above 17%. Despite the rapid progress in the device efficiencies of perovskite solar cells achieved in less than two years of active research, there are a lot of fundamental questions that need to be addressed at both material and device levels. The challenges are to control material properties and to develop more effective device architectures. It is critical to understand material effects on the basic physical and chemical processes that are important to device operations. The goal of this symposium was to bring scientists and engineers together to discuss recent progress, current challenges, and future directions for perovskite and similar solar cells.

Sessions Included:

Combining Perovskites with Conventional Solar Cell Materials to Make Highly Efficient and Inexpensive Tandems (Apr 07, 2015 09:00 AM)

Nanostructured Charge Collecting Materials for Highly Efficient Perovskite Solar Cells (Apr 10, 2015 09:00 AM)

Solution-Processed Lead-Free Perovskite Solar Cells (Apr 10, 2015 01:45 PM)

Hybrid Organic-Inorganic Halide Perovskites: Property Tuning through Preparation Method Variation (Apr 10, 2015 02:15 PM)

Achieving High Efficiencies for Planar Heterojuction Formamidinium Lead Iodide Perovskite Solar Cells in Controlled Humid Environments (Apr 10, 2015 02:30 PM)

Synthesis of Lead Halide Perovskite Nanoplatelets and Their Application on Room Temperature near IR Lasing (Apr 10, 2015 03:30 PM)

Defect Densities, Mobility and Device Physics of Perovksite Solar Cells (Apr 07, 2015 01:30 PM)

Charge Injection Dynamics from Organometal Halide Perovskite into Electrodes Evidence of Slow Hole Extraction (Apr 07, 2015 01:45 PM)

Composition-Dependent Electric Dipole Moment in Organometal Halide Perovskites (Apr 07, 2015 04:00 PM)

Computational Design of Novel Hybrid Perovskites (Apr 07, 2015 04:45 PM)

Understanding the Rate-Dependent Hysteresis in the Current-Voltage Curve of CH3NH3PbI3 Perovskite Solar Cells (Apr 08, 2015 09:30 AM)

Charge Extraction Layer Investigation for High Efficiency and Hysteresis-Less Organo Lead Halide Perovskite Solar Cell (Apr 08, 2015 09:45 AM)

Fully Printable Perovskite Solar Cells with TiO2/ZrO2/NiO/Carbon (CH3NH3PbI3) Structure (Apr 08, 2015 11:15 AM)

High Efficiency Perovskite Solar Cells via Material and Device Engineering (Apr 09, 2015 08:30 AM)

The Impact of Crystallization Processes on the Structural and Optical Properties of Hybrid Perovskites from Molecular to Mesoscopic Level (Apr 09, 2015 11:30 AM)

A Universal Low-Temperature One-Step Solution Processing Method for the Deposition of Large-Area Organometallic Halide Perovskite Thin Films for High-Performance Multifunctional Photovoltaics (Apr 09, 2015 11:45 AM)

Infrared-Light-Responsible Perovskite Solar Cells Consisting of Sn and Pb (Apr 09, 2015 02:00 PM)

Unexpected Electronic Structure of Air-Stable Lead-Free Perovskite Variant Cs2SnI6 for Photovoltaic Application (Apr 09, 2015 02:30 PM)

Morphological Control and Charge Recombination Kinetics for Perovskite Solar Cells (Apr 09, 2015 03:30 PM)

Full Description of the Optical Behavior of Perovskite Solar Cells (Apr 09, 2015 04:30 PM)

Achieving high reliability is a key issue for electronics and optoelectronics semiconductor devices and is as important as device performance for commercial application. Degradation of both the optoelectronic and electronic properties of semiconductor devices is strongly related to materials issues including defects, stress and quality of passivation. Many of these issues can occur during the device fabrication processes, i.e., crystal growth, impurity diffusion, ion-implantation, wet/dry etching, metallization, bonding, packaging, etc. This symposium reviewed the current status of reliability and degradation of various electronic and optoelectronics semiconductor devices as well as their materials issues in thin film growth, wafer processing, and device fabrication processes.

Sessions Included:

InGaN-Based Laser Diodes: Physical Origin of Gradual and Catastrophic Degradation (Apr 07, 2015 08:30 AM)

About the Role of the Thermal Conductivity of the Laser Structure in the Catastrophic Optical Degradation of High Power Laser Diodes (Apr 07, 2015 09:00 AM)

High-K Oxide Gate Diamond FETs (Apr 09, 2015 09:00 AM)

Modeling of CZT Response to Gamma Photons Using MCNP and Garfield (Apr 09, 2015 11:45 AM)

Effects of Electrical Stress and High-Energy Electron Irradiation on the InGaP/GaAs Heterojunction Phototransistor (Apr 09, 2015 02:00 PM)

Improvement of Reliability by Inserting Un-Doped Poly-Si to Bottom of Floating Gate for Sub-20nm NAND Flash Memory (Apr 09, 2015 03:30 PM)

Polycrystalline-Silicon Ferroelectric Memory Thin-Film Transistors with a Large-Single Grained Pb(Zr,Ti)O3 (Apr 09, 2015 04:00 PM)

All Inorganic-Based Active-Matrix Light-Emitting Diode Display on Stretchable Substrate Driven by High-Speed Single-Crystal Si Transistor Arrays (Apr 09, 2015 04:30 PM)

A Novel Synthetic Strategy for Environmentally Benign Processing of Polymer Semiconductors (Apr 09, 2015 04:45 PM)

Sulfuration Resistance Study on the Ag and Ag-Pd Reflectors of GaN-Based LEDs (Apr 07, 2015 11:45 AM)

Metal Electromigration through Transparent Conductors - Monitoring an OLED Failure Mechanism (Apr 07, 2015 01:30 PM)

Reliability Study of Organic Light-Emitting Diodes by Continuous-Wave and Pulsed Current Stressing (Apr 07, 2015 01:45 PM)

Intrinsic Degradation Mechanism of Organic Light Emitting Diodes (Apr 07, 2015 02:00 PM)

Electrical Characterization of Gate Traps in FETs with Ge and III-V Channels (Apr 07, 2015 03:15 PM)

Role of Dislocation Induced Off-State Gate Leakage in Drain Current Dispersion in Fresh and Stressed AlGaN/GaN Heterostructure Field Effect Transistors (Apr 07, 2015 04:15 PM)

Physical Mechanisms Affecting the Reliability of GaN-Based High Electron Mobility Transistors (Apr 08, 2015 08:00 AM)

Initial Stages of AlN Growth on Silicon (111) Using Metalorganic Chemical Vapor Deposition (Apr 08, 2015 03:00 PM)

Nano-Structural Analysis of GaN-based III-V Materials by Using Atom Probe Microscopy and Transmission Electron Microscopy (Apr 08, 2015 03:30 PM)

Relevance of Threading Dislocations for the Thermal Oxidation of GaN (Apr 08, 2015 04:30 PM)

This symposium provided a forum to survey recent advances covering the scientific and technological exploration of solar cell components and systems. This symposium put an emphasis towards improving the exchange between researchers working on different material systems for solar cell applications including buildings integrated with photovoltaics (BIPV) and environments integrated with photovoltaics (EIPV).

Sessions Included:

Advanced Functional Materials: Intrinsic and Doped Silicon Oxide (Apr 07, 2015 09:00 AM)

The Research and Applications of the Si Base Thin Film Photovoltaic Modules (Apr 07, 2015 09:45 AM)

Fundamentals and Technology of Silicon Heterojunction Solar Cells (Apr 07, 2015 10:30 AM)

Influence of Lamination Process and Materials on the Residual Stress in the Silicon Solar Cells as Revealed by Synchrotron X-Ray Microdiffraction (Apr 07, 2015 11:00 AM)

An Overview of the Australian Centre for Advanced Photovoltaics and the Australia-US Institute for Advanced Photovoltaics (Apr 07, 2015 01:30 PM)

Comparison of Hybrid Tandem Module Technologies Based on c-Si and Wide Band Gap Thin Film Photovoltaics (Apr 07, 2015 02:00 PM)

Light Emitting Diodes in the Experimental Practice for the Characterization of Novel Photovoltaics (Apr 07, 2015 02:15 PM)

Applications of Antireflection Coatings for Enhancing Power Output of Solar Panels (Apr 07, 2015 03:45 PM)

European Metrology Project for III-V Materials Based High Efficiency Multi-Junction Solar Cells (Apr 08, 2015 10:30 AM)

Adhesion and Reliability of Complex Multijunction Photovoltaic Structures (Apr 08, 2015 10:45 AM)

The Construction of Tandem Dye-Sensitized Solar Cells from Chemically-Derived Nanoporous Photoelectrodes (Apr 08, 2015 11:00 AM)

The symposium focused on fundamental understanding of biological/biomimetic-solid interfaces as well as their implementation into ordered nanoscale assemblies for drug delivery, tissue replacements, catalysis, sensors, electronics and photonics applications.

Sessions Included:

A Robust Surface Plasmon Resonance Based Protocol to Study Biomolecules-Nanoparticle Interactions (Apr 07, 2015 02:15 PM)

Monitoring the Size and the Stability of Zinc Oxide Quantum Dots in Biological Media: A Soft Ionization Mass Spectrometry Technique (MALDI-TOF-MS) (Apr 07, 2015 02:30 PM)

A Nanohybrid System Based on Holotransferrin and Maghemite Nanoparticles as a Promising Theranostic Device (Apr 07, 2015 04:15 PM)

Elucidating and Controlling Biotic/Abiotic Interfacial Interactions for Enhancing Material Properties (Apr 08, 2015 09:00 AM)

Induction of Chirality and Chiroptical Activity in Inorganic Nanocrystals Using Biomolecules (Apr 08, 2015 10:15 AM)

Atomistic Simulations of Proteins Interacting with Gold Surfaces and Nanoparticles (Apr 08, 2015 10:30 AM)

Surfactant-Free Nanoparticle-DNA Complexes with Ultrahigh Stability Against Salt for Environmental and Biological Sensing (Apr 08, 2015 11:00 AM)

Customisation of Mechanical Properties and Porosity of Tissue Scaffold Materials via Layer-by-Layer Assembly of Polymer-Nanocomposite Coatings (Apr 08, 2015 11:15 AM)

Conductance Properties of DNA Duplexes and DNA:RNA Hybrids (Apr 08, 2015 02:30 PM)

ZnO-Binding Peptides: Smart, Versatile Tools for Controlled Modificaiton of ZnO Growth Mechanism and Morphology (Apr 08, 2015 04:00 PM)

The Consequences of Water between Two Hydrophobic Surfaces on Adhesion and Wetting (Apr 09, 2015 09:00 AM)

Learning New Adhesion Lessons from Pollen Bioparticles (Apr 09, 2015 09:30 AM)

Molecular Simulation of Adhesion Property Recovery in the Cellulose/Phenolic Adhesive Interface: The Role of Water Molecules (Apr 09, 2015 10:15 AM)

Slippery Surfaces for Marine Fouling Applications (Apr 09, 2015 11:30 AM)

Engineered Microstructure Hydroxyapatite Granules for Tailored Drug Release Rate (Apr 09, 2015 02:00 PM)

Electrowetting on Bio-Inspired Soft Liquid-Infused Film (EWOLF): Complete Reversibility and Controlled Droplet Oscillation Suppression for Fast Optical Imaging (Apr 09, 2015 03:15 PM)

The Nexus of Energy, Water, Health and Food: Thinking Small to Solve Global Quality of Life Challenges (Apr 09, 2015 03:45 PM)

Intrinsic and Induced Chirality of CdSe Nanocrystals (Apr 10, 2015 08:15 AM)

Brush-Hydrogels with Graded and Gradient-Like Properties: From Organic to Hybrid Biomimetic Coatings (Apr 10, 2015 10:15 AM)

The Unified Contact Angle Model (UCAM) for Fabricating Designer Surfaces for Quantitative Control of Contact Angles and Wetting Behavior (Apr 10, 2015 10:30 AM)

Characterizing the Organization and Investigating the Conformation of Peptide Self-Assembled Monolayers on Gold Nanoparticles: An Experimental and Computational Approach (Apr 10, 2015 11:00 AM)

Design of Biomimetic Surfaces to Interrogate the Role of Glycosaminoglycans in Chemokine-Induced Myoblast Behaviour (Apr 10, 2015 11:15 AM)

Advanced 1D Nanomaterial-Assisted Electroporation for Novel Bacteria and Viruses Disinfection (Apr 10, 2015 01:30 PM)

Direct Intracellular Delivery of Synthetic Biomolecules Using Nanostraws (Apr 10, 2015 02:15 PM)

Breast Cancer Detection using Charge Sensors Coupled to DNA Monolayer (Apr 10, 2015 04:30 PM)

The purpose of this symposium was to bring together the scientists and engineers working on high capacity anode materials for lithium ion batteries to evaluate our understanding of material systems with large volume change during charge and discharge, to identify pathways for design of new materials with high capacity and longer cycle life, and to explore the potential for these systems.

Sessions Included:

Synthesis of Siox/C Nanocomposite by Mechanochemically Activated Sol-Gel Process Combined with Dry Ball Milling and Its Electrochemical Properties (Apr 07, 2015 11:30 AM)

Spray Pyrolysis Synthesis of NiO-Si Yolk-Shell Structure and Their Application as Anode Material in Lithium Ion Batteries (Apr 07, 2015 02:00 PM)

Carbon-Coated ZnFe2O4 Nanocrystals for Advanced Lithium-Ion Anodes (Apr 07, 2015 02:15 PM)

Water-Free Titania-Bronze Thin Films with Superfast Lithium Ion Transport (Apr 07, 2015 02:30 PM)

Atomic-Scale Investigation of the Role of Twin Boundary in Lithiation Process in SnO2 Nanowires (Apr 07, 2015 03:15 PM)

Wrapping Strategy for SnO2 with Porosity-Tuned Graphene for High Rate Lithium-Anodic Performance (Apr 07, 2015 03:30 PM)

Porous TiNb2O7 Microspheres with Conductive Metal Nitride as an Anode Material for High Power Lithium Ion Batteries (Apr 07, 2015 04:00 PM)

Mgh2 as High Performance Anode Material for All Solid State Rechargeable Lithium Ion Batteries (Apr 07, 2015 04:15 PM)

High Performance Hybrid Nanostructures for Lithium Ion Battery Anode (Apr 08, 2015 09:30 AM)

Crosslinking of Self-Healing Polymer for Improved Cycling Stability of Silicon Negative Electrodes for Li-Ion Batteries (Apr 08, 2015 09:45 AM)

Ultrathin Two-Dimensional Atomic Crystals as Stable Interfacial Layer for Improvement of Lithium Metal Anode (Apr 08, 2015 11:00 AM)

Fabrication of an Embedded Free-Standing Anode by Structure-Controlled Carbon Nanofibers for Solid-State Li-ion Batteries (Apr 08, 2015 02:30 PM)

Stress, Deformation, and Fracture of High-Capacity Anodes (Apr 09, 2015 09:45 AM)

In-situ TEM Study on the Tunnel Evolution during Lithiation of Single Crystalline Alpha-MnO2 Nanowires (Apr 09, 2015 03:30 PM)

Special Characteristics and Challenges of Top Performing Silicon Microwire Anodes for Li Ion Batteries (Apr 09, 2015 04:15 PM)

This MRS symposium focused on micro- and nanomachinery, including so-called catalytic nanomotors and engineered systems that incorporate biologically-derived motors such as kinesin and myosin. This symposium represented the cutting edge in materials for artificial and engineered micro- and nanomachinery and focused on mechanisms of generating mechanical forces on small length scales, fabrication of small artificial motors, engineering controls and functions into such machines, and applications of these dynamic systems.

Sessions Included:

Designing Self-Powered Nanomotors and Pumps (Apr 07, 2015 08:30 AM)

Dynamic Coupling at the Nanoscale (Apr 07, 2015 11:15 AM)

On the Mechanics of an Engineered Living 1D Swimmer at Low Reynolds Number from Cardiomyocytes (Apr 07, 2015 02:45 PM)

Actuation-Navigation-Sensory Capability in Cancer-Fighting Nanorobotic Agents (Apr 07, 2015 04:00 PM)

Emergent Structures in Suspensions of Self-Phoretic Colloids (Apr 08, 2015 02:15 PM)

Which Tool in the Toolbox? Functional Diversity across the Kinesin Superfamily (Apr 08, 2015 03:30 PM)

Self-Running Micro-Droplets of Liquid Metal with Record Speed on a Race Track (Apr 08, 2015 04:30 PM)

This symposium focused on the synthesis of molecular materials and crystal engineering; physical and electronic properties of molecular solids; nucleation and growth of organic and bio-related crystals. Among the recent developments that will be presented in the symposium are advances in materials synthesis, organic single-crystal growth, polymorphism, structure-property relationship studies, fundamentals of charge transport, characterization of bulk and interfacial properties at various length-scales.

Sessions Included:

Large Area Formation of Self-Aligned Crystalline Domains of Organic Semiconductors on Transistor Channels using a Novel Crystallization Technique: CONNECT (Apr 07, 2015 08:30 AM)

Enantioselective Control of Lattice and Shape Chirality in Inorganic Nanocrystals Using Chiral Biomolecules (Apr 09, 2015 01:45 PM)

Temperature Dependent Electron Transport Studies on Cl2-NDI Organic Single Crystals: The Role of Static and Dynamic Lattice Deformations (Apr 07, 2015 01:45 PM)

Crystal Engineering of Bulk p/n Heterojunction by Complementary Hydrogen Bonding (Apr 07, 2015 04:00 PM)

Multiple Stoichiometries in Organic Single Crystals of Charge Transfer Compound (Apr 08, 2015 08:00 AM)

Motion in Crystalline Organic Solids: Encompassing Rotation and Fluorescence in Conjugated Compounds (Apr 08, 2015 03:30 PM)

Crystallization of Molecular Glasses (Apr 09, 2015 09:00 AM)

Surface Diffusion of Molecular Glasses and Its Role in Crystal Growth and Formation of Stable Glasses by Vapor Deposition (Apr 09, 2015 09:30 AM)

The Influence of Electric and Magnetic Fields on the Nucleation, Crystal Growth, and 3D Structure of Proteins: A Modern Topic in Crystal Engineering (Apr 09, 2015 10:15 AM)

On the Use of Enhanced Sampling and Free Energy Generation Techniques in the Prediction of Structure and Polymorphism in Molecular Crystals (Apr 09, 2015 10:45 AM)

Computational Self-Assembly of a One-Component Icosahedral Quasicrystal (Apr 09, 2015 11:15 AM)

Two-dimensional (2D) materials with atomic scale thickness are emerging as a new frontier of material science. In particular, the non-graphene 2D materials can provide a large number of new functionalities that cannot be obtained from graphene. For instance, unlike graphene, which is gapless, the chalcogenide (sulfide, selenide, and telluride) materials have bandgaps comparable to conventional group IV or group III-V, and thus present a tantalizing prospect of scaling all semiconductor science and technology down to a truly atomic scale. This symposium was dedicated to promoting communication among researchers working on 2D non-graphene materials. It will cover chalcogenide, oxide (i.e. manganese oxide), and nitride (i.e. boron nitride) materials and a broad range of research fields on the synthesis, characterizations, and applications of these 2D materials.

Sessions Included:

Direct Synthesis of Advanced van der Waals Heterostructures Based on Graphene, MoS2, and WSe2 (Apr 07, 2015 11:00 AM)

One-Step Synthesis of Van der Waals Heterostructures between Multi-Layer Transition Metal Dichalcogenides, MoS2 and WS2 (Apr 07, 2015 11:45 AM)

Study on the Contact between MoS2 and Metals (Apr 10, 2015 09:00 AM)

Electronic Devices of Two-Dimensional Semiconductors - From Atomic to Molecular (Apr 10, 2015 11:15 AM)

MoS2 Transistors Operating at Gigahertz Frequencies (Apr 10, 2015 11:45 AM)

Elastic Properties of 2D Monolayer Semiconductors and Their Bilayer Heterostructures (Apr 10, 2015 01:45 PM)

Anti-Ambipolar, Gate-Tunable, Carbon Nanotube-MoS2 Heterojunctions (Apr 10, 2015 02:30 PM)

Synthesis of LiCoO2 and LiNi1/3Mn1/3Co1/3O2 2D Nanosheets by Osmotic Swelling and Reassembly into Hybrid Materials for High Performance Lithium-ion Batteries and Supercapacitors (Apr 10, 2015 03:30 PM)

Plasmonic Pumping of Excitonic Photoluminescence in Hybrid MoS2@Au Nanostructures (Apr 10, 2015 04:00 PM)

Spin-Valley Coupling in 2D Transition Metal Dichalcogenides (Apr 08, 2015 11:15 AM)

Electrically Driven Valley Polarization by Spin Injection in a Monolayer Transition Metal Dichalcogenide Heterojunction (Apr 08, 2015 11:45 AM)

Phase Engineering in 2D Transition Metal Dischalcogenides (Apr 08, 2015 02:15 PM)

High Powerfactor in Single and Few-Layer Mos2 for Thermoelectrics (Apr 08, 2015 04:15 PM)

Exciton Radiative Lifetimes in Layered Transition Metal Dichalcogenides (Apr 09, 2015 09:45 AM)

Ab Initio Study of the Electron-Phonon Interaction in Phosphorene (Apr 09, 2015 11:30 AM)

Flexible Phosphorene Transistors: Materials, Devices, Amplifiers and Systems (Apr 09, 2015 02:00 PM)

Atomic Structure and Monolayer Stability in 2D Elemental Layered Materials: Silicene and Germanene (Apr 09, 2015 04:30 PM)

Harvesting and utilization of ambient mechanical energy offers a unique opportunity for powering electronic devices and engineering their performance. Nanogenerator will find substantial application potential in next generation micro/nano-systems for infrastructure and environmental monitoring, health care, personal electronics, and defense and surveillance technologies. This symposium aimed at fundamental understandings and practical development of the nanoscale mechanical energy conversion materials and systems, and the coupling between piezoelectric polarization and semiconductor behaviors and functionalities.

Sessions Included:

Micro Energy Harvester for Implantable Devices (Apr 07, 2015 08:15 AM)

Updated Progress in Nanogenerators and Piezotronics (Apr 07, 2015 09:30 AM)

Zinc Oxide Nanorod P-N Junction-Based Piezoelectric Energy Generators: Metrological Considerations of Origin of Charge Generation (Apr 07, 2015 10:45 AM)

Personalized Intelligent Keyboard for Self-Powered Human-Machine Interfacing (Apr 07, 2015 01:30 PM)

Performance and Service Behavior of ZnO Based Energy Conversion Nanodevices (Apr 07, 2015 02:30 PM)

Lithium Niobate Based Piezoelectric Transducer (Apr 08, 2015 08:00 AM)

Piezoelectric Potential Enhanced Oxygen Evolution Reaction (Apr 08, 2015 08:45 AM)

Nanowire Based Energy Applications of Wurtzite and Zincblende Semiconductors (Apr 08, 2015 09:15 AM)

The PiezoElectronic Transistor: Forcing Materials to Switch (Apr 08, 2015 10:45 AM)

Towards High Performing PZT Thin Films for MEMS and Piezotronics (Apr 08, 2015 11:30 AM)

Modeling Phase Transformations in NiTi Shape Memory Alloy for Energy Harvesting Applications (Apr 08, 2015 02:30 PM)

In situ TEM Study of Piezoelectricity and Ferroelectricity of Thin Films (Apr 08, 2015 03:30 PM)

Graphene-Based Nanogenerator: Experiments, Theories and Applications (Apr 08, 2015 04:00 PM)

Giant Piezoresistance and Stress in Silicon Nanowires (Apr 08, 2015 04:15 PM)

Lead-Free Nanomaterials for Energy Harvesting and Active Sensor Applications (Apr 08, 2015 04:45 PM)

A Multi-Layered Interdigital Electrodes-Based Triboelectric Nanogenerator for Hydroelectric Power Harvesting (Apr 09, 2015 08:45 AM)

Shock Induced Depolarization and Current Generation in Ferroelectrics (Apr 09, 2015 09:15 AM)

Antireflection Coating Reinforced Highly Transparent Triboelectric Nanogenerator for Harvesting Water-Related Energy (Apr 09, 2015 10:45 AM)

Sliding-Mode Triboelectric Nanogenerators Energy Harvesting Systems: Theory, Modeling and Design Optimization (Apr 09, 2015 11:00 AM)

Planar Sliding Triboelectric Nanogenerator for Active Optical MEMS (Apr 09, 2015 11:30 AM)

Textile-Structured Triboelectric Nanogenerators for Wearable Electronics (Apr 09, 2015 11:45 AM)

Self-Powered n-MgxZn1-xO/p-Si Photodetector Improved by Alloying-Enhanced Piezo-Phototronic Effect (Apr 09, 2015 02:45 PM)

Enhancing Optoelectronic Properties of Semiconductor Devices with Piezoelectric Substrates (Apr 09, 2015 03:30 PM)

Photoelectric Property Change Caused by Additional Nano-Confinement: A Study of Half-Dimensional Nanomaterial (Apr 09, 2015 04:15 PM)

Tribotronics: A New Field Coupled Semiconductor and Triboelectricity (Apr 09, 2015 04:45 PM)

Semiconductor nanowires of a variety of materials (e.g., group IV, III-V, II-VI, oxide, chalcogenide, etc.) are promising building blocks for many existing and emerging applications. The fabrication and characterization of devices that leverage nanowire electronic, optoelectronic, electrochemical, and sensing properties, among others, continue to advance at a remarkable pace, while recent studies highlight a number of new opportunities in quantum computing and optics, photovoltaics, plasmonics, and in vivo probing. For all of these devices, nanowires with user-defined dimensions, compositions, crystal structures, and heterointerfaces are required.

Sessions Included:

Understanding the Mechanism of Plasma-Assisted Silicon Nanowire Growth Based on Low Surface Tension Metals (Apr 07, 2015 08:30 AM)

Straight and Vertically Aligned Palladium-Seeded GaAs Nanowires (Apr 07, 2015 09:45 AM)

Radial Heterojunction Crystalline Silicon Nanowire Solar Cells with 11.8% Conversion Efficiency (Apr 08, 2015 08:45 AM)

Scaling down the Field Effect Transistors Based on Individual InAs Nanowire (Apr 08, 2015 11:30 AM)

Modifying Electrical and Optical Properties of Solution Derived ZnO Nanorods via Surface Doping (Apr 08, 2015 11:45 AM)

Large area infrared avalanche photodetectors based on InP/InAsP NWs (Apr 09, 2015 08:30 AM)

Doping Dynamics of Laterally-Grown p-n Junction GaAs Nanowires Revealed Using Scan-Probe Microscopy Techniques (Apr 09, 2015 08:45 AM)

From Micro-Supercapacitor to Pseudo Capacitor Based on Functionalized Silicon Nanowires Electrodes (Apr 09, 2015 11:45 AM)

Accurate Ultrafast and Contact-Free Measurements of Charge Carrier Transport and Dynamics in III�V Nanowires (Apr 09, 2015 01:30 PM)

Understanding Polytypism in III-V Nanowires (Apr 10, 2015 10:30 AM)

Traction Force Measurements of Normal and Cancerous Breast Cells Using Fluorescent Nanowires (Apr 10, 2015 02:15 PM)

Quantum Optics with Nanowires (Apr 10, 2015 03:30 PM)

Nanowire/Nanoantennas: Unconventional Light Interaction (Apr 10, 2015 04:30 PM)

Metal oxides, in the form of thin films and nanostructured materials, represent a class of materials whose properties cover the entire range from metals to semiconductors to insulators and almost all aspects of materials science, chemistry and physics, in very broad application areas. This symposium aimed at putting together scientists from academia, industry and national laboratories active in the field of metal oxides, with special emphasis on the interfacial properties of this class of materials.

Sessions Included:

Nanotailoring ZnO:X (X = Al, B) Films by Atomic Layer Deposition (Apr 07, 2015 09:15 AM)

Multi-Shelled Manganese Oxide Hollow Microspheres: Synthesis and Application in Superior Supercapacitor Electrode (Apr 09, 2015 08:15 AM)

Well-Controllable Fabrication of Aligned ZnO Nanorods for Dye-Sensitized Solar Cell Application (Apr 09, 2015 10:00 AM)

Rational Design and Fabrication of Nano- and Micro-Structured Metal Oxides for Photovoltaic Application (Apr 09, 2015 11:00 AM)

Memristive Properties of Metal/Manganite Devices: Correlation of Charge-Carrier Transport and Redox-State at the Interface (Apr 09, 2015 02:30 PM)

Polarization Dynamics in Ferroelectric Relaxors Studied by Multidimensional Piezoresponse Force Microscopy (Apr 09, 2015 02:45 PM)

Characterizing Ionic/Electrochemical Effects in the Resistive Switching of TiO2 Film by Using Advanced Scanning Probe Microscopy Techniques (Apr 09, 2015 04:00 PM)

First-Principles Investigation of H2O Adsorption on SnO2-TiO2 Gas Sensors (Apr 10, 2015 09:15 AM)

10MHz Cross-Coupled LC Oscillators Based on Plasma-Enhanced ALD Zinc Oxide Thin-Film Transistors (Apr 10, 2015 03:30 PM)

Low-Temperature Protonic Conductivity in Densified Nanometric TiO2 Obtained by HP-SPS (Apr 07, 2015 10:45 AM)

New Type of Gas Sensors Based on Polarizable Metal Oxide Thin Films (Apr 07, 2015 04:00 PM)

Growth and Characterization of Tin Oxide Low Dimensional Structures and Tin Oxide- Graphene Oxide Nanocomposites for Battery Applications (Apr 08, 2015 08:15 AM)

Configurations and Characterizations of Perovskite Nanocrystals Deposited on Varied Metal Oxide Layers (Apr 08, 2015 10:45 AM)

Ion Induced Reduction of Iron Oxides Investigated by Energy-Resolved XPS and XANES (Apr 08, 2015 11:15 AM)

Reliability of Poly-Crystalline Indium-Gallium-Zinc-Oxide Thin Film Transistors under Bias and Light Illumination Stress (Apr 08, 2015 02:15 PM)

Metal Oxide/Electrolyte Interfaces: Unprecedented Insight by Electrochemistry and nanoIR (Apr 08, 2015 02:45 PM)

Metal Oxide Nanoparticles: Building Blocks for Aerogels, Films and Composites (Apr 08, 2015 03:30 PM)

Sonochemical Synthesis of Coherent Mn3O4 Carbon Nanocomposites with Enhanced Energy Storage Property (Apr 09, 2015 08:45 AM)


Tutorial Y: Overview of Phase-Change Materials, Their Physics and Applications

Apr 6, 2015 9:00am ‐ Apr 6, 2015 2:45pm

Identification: EVT0009

This tutorial provided an overview of the physics and applications of phase change materials. Instructors: Bart Jan Kooi, University of Groningen, Andrea Redaelli, Micron Semiconductor Italia, Junji Tominaga, National Institute of Advanced Industrial Science and Technology. An MRS OnDemand event.


Tutorial CC: Reliability and Materials Issues of Semiconductor Optical and Electron Devices and Materials

Apr 6, 2015 9:00am ‐ Apr 6, 2015 5:00pm

Identification: EVT0011

Instructors: Leonard Brillson, The Ohio State University, Matteo Meneghini, University of Padova, Michael Salmon, Evans Analytical Group, Joachim Würfl, Ferdinand-Braun-Institut, Leibniz Institut fuer Hoechstfrequenztechnik. An MRS OnDemand event.


Tutorial P: Nanogenerators and Piezotronics - From Working Principles to Applications

Apr 6, 2015 9:00am ‐ Apr 6, 2015 12:00pm

Identification: EVT0012

This tutorial covered the principles and applications of nanogenerators and piezotronics. Instructor: Zhong Lin Wang, Georgia Institute of Technology. An MRS OnDemand event.


Tutorial OO: Introduction to Metal-Assisted Chemical Etching - Chemistry and Applications

Apr 6, 2015 9:00am ‐ Apr 6, 2015 12:15pm

Identification: EVT0013

This tutorial covered the chemistry and applications of metal-assisted chemical etching. Instructors: Owen Hildreth, Arizona State University, Xiuling Li, University of Illinois, Urbana-Champaign. An MRS OnDemand event.


Tutorial WW: Measure Ultrafast Dynamics - How and Why

Apr 6, 2015 1:30pm ‐ Apr 6, 2015 5:00pm

Identification: EVT0014

The tutorial provided an introduction to commonly used techniques that measure ultrafast dynamics in complex materials that include recent developments spanning from the far-infrared through the X-ray region of the electromagnetic spectrum. Instructor: Richard Averitt, University of California, San Diego. An MRS OnDemand event.


"Accelerating the Development of Energy Materials Through Advanced X-ray Tools" - the 2015 MRS Outstanding Young Investigator Award talk

Apr 6, 2015 5:30pm ‐ Apr 6, 2015 7:00pm

Identification: EVT0020

Developments in experimental and analytical approaches continue to expand our ability to probe the coupled structure and reactivity of materials relevant to energy storage, conversion and utilization. This includes advances in in situ/operando measurements to directly probe critical processes during material synthesis or operation, and advances in pair distribution function (PDF) methods which can provide atomic-scale structural insights, with crystallographic resolution, for systems that are beyond the limits of conventional crystallography (e.g., nanoscale, disordered, amorphous, and heterogeneous materials). Examples span broad areas such as exploring the structural transformations that can be induced in metal-organic framework materials under pressure, probing interactions of molecules at surfaces to understand gas capture within porous materials, operando studies of battery electrodes to understand their operation and the factors that limit performance, and in situ studies of catalysts and catalyst formation to understand the active catalytic species and how these can be targeted during synthesis.

An interview with Dr. Chapman about her work and this talk is available here


Fred Kavli Distinguished Lectureship in Nanoscience: Nanomaterials under Stress - A New Opportunity for Nanomaterials Synthesis and Engineering

Apr 6, 2015 7:00pm ‐ Apr 6, 2015 8:00pm

Identification: EVT0017

Precise control of structural parameters through nanoscale engineering to improve optical and electronic properties of functional nanomaterials continuously remains an outstanding challenge. Previous work has been conducted largely at ambient pressure and relies on specific chemical or physical interactions such as van der Waals interactions, dipole-dipole interactions, chemical reactions, ligand-receptor interactions, etc. In this presentation, I introduced a new Stress-Induced Fabrication method that uses mechanical compressive force applied to nanoparticles to induce structural phase transition and to consolidate new nanomaterials with precisely controlled structures and tunable properties. By manipulating nanoparticle coupling through external pressure, instead of through chemistry, a reversible change in their assemblies and properties can be achieved and demonstrated. In addition, over a certain threshold, the external pressure will force these nanoparticles into contact, thereby allowing the formation and consolidation of one- to three-dimensional nanostructures. Through stress-induced nanoparticle assembly, materials engineering and synthesis become remarkably flexible without relying on a traditional crystallization process where atoms/ions are locked in a specific crystal structure. Therefore, morphology or architecture can be readily tuned to produce desirable properties for practical applications.


Group III-Sb Metamorphic Buffer on Si for p-Channel all-III-V CMOS: Electrical Properties, Growth and Surface Defects

Apr 7, 2015 8:00am ‐ Apr 7, 2015 8:15am

Identification: AA1.01

Group III-Sb compound semiconductor is a promising material family for future transistors owing to their superior hole and electron transport properties for future CMOS and large controllable band offsets for high-performance TFETs. The heteroepitaxial growth of GaSb on Si substrate has significant advantage for volume fabrication of III-V ICs. High lattice mismatch between III-Sb�s and Si results in 3D nucleation that is usually mitigated by incorporation of metamorphic nucleation layer (NL) with low adatom mobility, such as AlSb. We studied NL coverage rate and growth morphology of the AlSb NL grown by Migration-Enhanced molecular-beam Epitaxy (MEE) using in-situ Auger electron spectroscopy and AFM. The coverage kinetics was analyzed with Avrami�s approach that allowed for accurate determination of nucleation density and evolution of the 3D islands. Effect of AlSb NL growth parameters and surface morphology on mobility and hole density in strained InGaSb quantum wells was studied. The optimum growth temperature of 300 0C is found for AlSb NL, resulting in room temperature Hall mobility of 660 cm2/V s at 3x1011 cm2 sheet hole density in the strained InGaSb QW p-channel. Using various designs of metamorphic superlattice buffers, thick GaSb layers were grown on Si(001) ,60 to [110] miscut Si(001), SOI (001) and GaAs (001) substrates by molecular beam epitaxy. Buffer design controls the defect density in GaSb that affects the electrical properties of the layers. Acceptor states related to the defects are quantified using differential Hall measurements in undoped progressively etched structures and TEM/AFM imaging. Optimized buffers allow to reduce defect density below 108 cm-2 that results in ~1x1017 cm-3 concentration of defect-related acceptors. The effect of growth-related defects (threading dislocations and microtwins) on hole concentration and mobility in strained InGaSb QWs is observed and quantified. The result on strained InGaSb p-MOSFETs grown on Al(Ga)Sb metamorphic buffers are summarized.

  • Shun Sasaki, SUNY College of Nanoscale Science and Engineering, SUMCO Corporation

Kinetics and Structure of Nickelide Contact Formation to InGaAs Fin Channels

Apr 7, 2015 8:15am ‐ Apr 7, 2015 8:30am

Identification: AA1.02

The InGaAs high mobility channels are vowed as serious candidates for alternative channel materials for sub-10 nm technology nodes urging studies for analogous contacts to the dominant silicide contacts in the Si technology mainstream. The Ni-InGaAs (nickelide) contact technology has been demonstrated as a suitable self-aligned contact technology for InGaAs channels with record small specific contact resistivity. However, the majority studies on nickelide contact formation were conducted on planar InGaAs films and little studies focused on the contact metallurgy specific in nanoscale InGaAs nanowire or Fin channels. Here, we utilized a novel wafer bonding technique to transfer thin (50 nm) In0.53Ga0.47As layers onto SiO2/Si substrates and Si transmission electron microscopy (TEM) frames. InGaAs Fins with variable widths, lengths, and orientations were fabricated through a combination of electron-beam lithography and top-down dry etching steps, followed by Ni contact deposition. Rapid thermal annealing and in-situ TEM thermal heating cycles were conducted to react Ni with the InGaAs channel and deduce the reaction kinetics, dynamics, and resultant nickelide and interface structures. The nickelide phase was found to gradually extend into the InGaAs fin channels, introducing a 32% � 7% height increase to the channels with negligible lateral expansion. The morphology of formed nickelide phase strongly depended on the orientation of fin structures, as we observed sharp and abrupt nickelide-InGaAs interfaces for oriented fin channels, while rough interfaces with multiple facets in oriented ones. Systematical measurements of the length of nickelide segments according to different annealing times, temperatures, and fin widths, revealed a Ni diffusion limited kinetic growth process, which agrees well with the derived equations from a kinetic competition model. A transition from surface diffusion limited kinetic process to volume diffusion limited one was reported for the first time, related to the increase of InGaAs fin widths. We extracted a surface diffusion coefficient of 1.3x10-15 ~ 1.5x10-15m2/s at a reaction temperature of 250 �C, which is ~5 times larger than the extracted volume diffusion coefficient. The crystalline structure analysis with TEM revealed a hexagonal lattice of formed nickelide phase, adopting a NiAs (B8) structure. Cross-sectional TEM measurements were achieved by focus ion beam (FIB) cut along the fin channels, showing a slanted nickelide-InGaAs interfaces towards the base, which is possibly induced by the stress from underneath dielectric layers. These results contrasted with the conventional contact metallurgy studies in nanowires with free surface, and the detailed structure, interface and reaction dynamics will be discussed.


Micro Energy Harvester for Implantable Devices

Apr 7, 2015 8:15am ‐ Apr 7, 2015 8:45am

Identification: P1.01

Recently triboelectric nanogenerator (TENG) devices that transform environmental mechanical energy to electric power have been demonstrated as a renewable, clean and usable power source. In this talk, we will demonstrate several novel high-performance TENGs for implantable devices. First is a novel sandwich-shape triboelectric nanogenerator to convert low-frequency mechanical energy to electric energy with double frequency which can be directly used to drive an implantable 3-D microelectrode array for neural prosthesis without any energy storage unit or rectification circuit. Second is a hybrid NanoGenerator which has Micro/nanostructures on the PDMS surface for triboelectric generator and PVDF thin film as piezoelectric generator to enhance the output performance, the power density of this device can be reach to 50mW/cm3, and demonstrate the application in self-powering active implantable sensor. Third, a single-friction-surface triboelectric generator (STEG) has been developed and characterized as self-powered touch sensor could potentially be used to develop self-powered supersensitive artificial skin, etc.