TY - GEN
T1 - Extended Accelerated Stress Testing (EAST) of Glass/Glass, Glass/Backsheet and Glass/Transparent Backsheet PV Modules
T2 - 49th IEEE Photovoltaics Specialists Conference, PVSC 2022
AU - Kumar, Akash
AU - Pavgi, Ashwini
AU - Hacke, Peter
AU - Choudhury, Kaushik Roy
AU - Tamizhmani, Govinda Samy
N1 - Funding Information:
ACKNOWLEDGMENT This material is based upon work supported by the Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE), under Award Number DE-EE-0008565. We would like to sincerely thank our research colleagues at ASU-PRL who partly helped performing characterizations presented in this paper.
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - This paper presents the indoor extended accelerated stress testing (EAST) results of glass/glass (GG), glass/backsheet (GB) and glass/transparent backsheet (GT) modules having identical cells and two different encapsulant types, ethyl-vinyl-acetate (EVA) and polyolefin-elastomer (POE). Six 4-cell modules having the abovementioned construction combinations were subjected to extended ultraviolet (UV; 600 kWh/m2), damp-heat (DH; 2000 hours) and thermal-cycling (TC; 600 cycles) tests. The post-stress UV fluorescent imaging, electroluminescent imaging, reflectance spectrophotometry and colorimetry results indicated that the grid finger degradation and encapsulant browning are slightly higher in the GG modules compared to the GB modules. The post-stress IV test results indicated, in general, that the GG/EVA modules tend to perform inferior to the GG/POE modules with the EAST evaluation.
AB - This paper presents the indoor extended accelerated stress testing (EAST) results of glass/glass (GG), glass/backsheet (GB) and glass/transparent backsheet (GT) modules having identical cells and two different encapsulant types, ethyl-vinyl-acetate (EVA) and polyolefin-elastomer (POE). Six 4-cell modules having the abovementioned construction combinations were subjected to extended ultraviolet (UV; 600 kWh/m2), damp-heat (DH; 2000 hours) and thermal-cycling (TC; 600 cycles) tests. The post-stress UV fluorescent imaging, electroluminescent imaging, reflectance spectrophotometry and colorimetry results indicated that the grid finger degradation and encapsulant browning are slightly higher in the GG modules compared to the GB modules. The post-stress IV test results indicated, in general, that the GG/EVA modules tend to perform inferior to the GG/POE modules with the EAST evaluation.
KW - EVA
KW - POE
KW - glass/backsheet
KW - glass/glass
KW - indoor accelerated stress testing
KW - reliability
UR - http://www.scopus.com/inward/record.url?scp=85142784222&partnerID=8YFLogxK
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U2 - 10.1109/PVSC48317.2022.9938862
DO - 10.1109/PVSC48317.2022.9938862
M3 - Conference contribution
AN - SCOPUS:85142784222
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 1065
EP - 1067
BT - 2022 IEEE 49th Photovoltaics Specialists Conference, PVSC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 5 June 2022 through 10 June 2022
ER -