To view this presentation:

  • If you have an MRS account, click the Login button above.
  • New to MRS?  Create a free account here



  0       0

2015 MRS Spring Meeting


E1.05 - Influence of Lamination Process and Materials on the Residual Stress in the Silicon Solar Cells as Revealed by Synchrotron X-Ray Microdiffraction


Apr 7, 2015 11:00am ‐ Apr 7, 2015 11:15am

Description

In this study, we investigate the effect of two polymer encapsulation with different material properties such as Young�s modulus (E), yield strength etc...on the residual stress gradients of silicon. We observe through synchrotron X-ray microdiffraction that, solar photovoltaic (PV) module laminated with encapsulants A and B which have Young�s modulus of 6.34 and 28.32MPa respectively, reveals distinct variations in residual stress of silicon. The residual stress of silicon near the solder (stress concentration region), showed a maximum quantitative value of ~300 MPa with encapsulant A whereas for the solar PV with encapsulant B, it showed a much higher value of ~450 MPa. Further, this residual mechanical stress and its relation to fracture/crack initiation events of silicon were understood using three point bending tests. The result shows that with encapsulant A, crack initiation of silicon at force of 37KN is observed whereas for the PV with encapsulant B, silicon cracked at much lower force of 10KN. These studies confirm that encapsulant materials have a significant effect on the residual stress of silicon which directly affects the working efficiency and reliability of the solar PV.

Speaker(s):

You must be logged in and own this session in order to post comments.

Print Certificate
Review Answers
Print Transcript
Completed on: token-completed_on
Review Answers
Please select the appropriate credit type:
/
test_id: 
credits: 
completed on: 
rendered in: 
* - Indicates answer is required.
token-content

token-speaker-name
token-index
token-content
token-index
token-content
token-index
token-content
token-index
token-content
token-index
token-content
token-index
token-content
/
/
token-index
token-content
token-index
token-content