Abstract
Delamination of solar module interfaces often occurs in field-tested solar modules after decades of service due to environmental stressors such as humidity. As water diffuses into the module, failure mechanisms like corrosion and delamination are significantly affected. In the presence of water, the interfaces between EVA and the cell, glass, and backsheet all experience losses of adhesion exposing the module to accelerated degradation. Understanding the relation between interfacial adhesion and water content inside PV modules can help mitigate detrimental power losses. Water content measurements via short wave infrared reflectometry combined with 180° peel tests were used to study and quantify the effect of water ingress and egress on adhesion. Changes in adhesion strength for different module interfaces are quantified, correlating spatial distribution of water content to adhesion for damp heat and dry heat exposed samples. After 1000 hours of damp heat exposure, decreases in adhesion strength of approximately 1 N/mm were noted for all interfaces.
Original language | English (US) |
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Title of host publication | 2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 2101-2103 |
Number of pages | 3 |
ISBN (Electronic) | 9781665419222 |
DOIs | |
State | Published - Jun 20 2021 |
Event | 48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States Duration: Jun 20 2021 → Jun 25 2021 |
Publication series
Name | Conference Record of the IEEE Photovoltaic Specialists Conference |
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ISSN (Print) | 0160-8371 |
Conference
Conference | 48th IEEE Photovoltaic Specialists Conference, PVSC 2021 |
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Country/Territory | United States |
City | Fort Lauderdale |
Period | 6/20/21 → 6/25/21 |
Funding
ACKNOWLEDGEMENTS Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. This material is based upon work supported by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technologies Office Award Number DE-EE0008160. The views expressed herein do not necessarily represent the views of the U.S. Department of Energy or the United States Government.
Keywords
- adhesion
- delamination
- peel
- water
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering