skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Correlation of Advanced Accelerated Stress Testing with Polyamide-Based Photovoltaic Backsheet Field-Failures

Abstract

Cracking of polyamide (PA)-based photovoltaic (PV) backsheet materials has been widely reported for field-aged modules. Failure was not detected by conventional accelerated stress tests (ASTs), which lacked the necessary combination of stress factors and/or factor sequences. PA-based AAA backsheet cracking has since been reproduced through combined and sequential stress testing. Planar- and cross-sectional-optical microscopy as well as Fourier-transform Infrared Spectroscopy (FTIR), have been used to elucidate the mechanical and chemical changes which lead to failure of the backsheet. Field-aged backsheet samples demonstrating failure in various climates (including locations in China and Italy) are also analyzed. Through the analysis, a comparison is made between the different stress testing protocols and the field-aged samples to validate relevance of the advanced stress tests. It is shown that the changes induced through combined-accelerated stress testing (C-AST) were most representative of changes induced by the field, supporting the relevance of C-AST and providing validity for the test protocol.

Authors:
 [1];  [1];  [2];  [2];  [1];  [3];  [3];  [4];  [1]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. SLAC National Accerator Laboratory
  3. Sandia National Laboratories
  4. Lawrence Berkeley National Laboratory
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1603906
Report Number(s):
NREL/CP-5K00-74174
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), 16-21 June 2019, Chicago, Illinois
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 42 ENGINEERING; backsheet; combined-accelerated stress testing; cracking; polyamide

Citation Formats

Owen-Bellini, Michael, Miller, David C, Schelhas, Laura T., Moffitt, Stephanie L., Jenket, Donald R, Maes, Ashley M., Hartley, James Y., Karin, Todd, and Hacke, Peter L. Correlation of Advanced Accelerated Stress Testing with Polyamide-Based Photovoltaic Backsheet Field-Failures. United States: N. p., 2020. Web. doi:10.1109/PVSC40753.2019.8980750.
Owen-Bellini, Michael, Miller, David C, Schelhas, Laura T., Moffitt, Stephanie L., Jenket, Donald R, Maes, Ashley M., Hartley, James Y., Karin, Todd, & Hacke, Peter L. Correlation of Advanced Accelerated Stress Testing with Polyamide-Based Photovoltaic Backsheet Field-Failures. United States. https://doi.org/10.1109/PVSC40753.2019.8980750
Owen-Bellini, Michael, Miller, David C, Schelhas, Laura T., Moffitt, Stephanie L., Jenket, Donald R, Maes, Ashley M., Hartley, James Y., Karin, Todd, and Hacke, Peter L. Thu . "Correlation of Advanced Accelerated Stress Testing with Polyamide-Based Photovoltaic Backsheet Field-Failures". United States. https://doi.org/10.1109/PVSC40753.2019.8980750.
@article{osti_1603906,
title = {Correlation of Advanced Accelerated Stress Testing with Polyamide-Based Photovoltaic Backsheet Field-Failures},
author = {Owen-Bellini, Michael and Miller, David C and Schelhas, Laura T. and Moffitt, Stephanie L. and Jenket, Donald R and Maes, Ashley M. and Hartley, James Y. and Karin, Todd and Hacke, Peter L},
abstractNote = {Cracking of polyamide (PA)-based photovoltaic (PV) backsheet materials has been widely reported for field-aged modules. Failure was not detected by conventional accelerated stress tests (ASTs), which lacked the necessary combination of stress factors and/or factor sequences. PA-based AAA backsheet cracking has since been reproduced through combined and sequential stress testing. Planar- and cross-sectional-optical microscopy as well as Fourier-transform Infrared Spectroscopy (FTIR), have been used to elucidate the mechanical and chemical changes which lead to failure of the backsheet. Field-aged backsheet samples demonstrating failure in various climates (including locations in China and Italy) are also analyzed. Through the analysis, a comparison is made between the different stress testing protocols and the field-aged samples to validate relevance of the advanced stress tests. It is shown that the changes induced through combined-accelerated stress testing (C-AST) were most representative of changes induced by the field, supporting the relevance of C-AST and providing validity for the test protocol.},
doi = {10.1109/PVSC40753.2019.8980750},
url = {https://www.osti.gov/biblio/1603906}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {2}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: