Abstract
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 above-mentioned 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.
Original language | American English |
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Number of pages | 6 |
State | Published - 2022 |
Event | 49th IEEE Photovoltaic Specialists Conference (PVSC 49) - Philadelphia, Pennsylvania Duration: 5 Jun 2022 → 10 Jun 2022 |
Conference
Conference | 49th IEEE Photovoltaic Specialists Conference (PVSC 49) |
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City | Philadelphia, Pennsylvania |
Period | 5/06/22 → 10/06/22 |
Bibliographical note
See NREL/CP-5K00-85051 for paper as published in proceedingsNREL Publication Number
- NREL/CP-5K00-83497
Keywords
- EVA
- glass/backsheet
- glass/glass
- indoor accelerated stress testing
- POE
- reliability