[10p-N304-1~7] 16.3 Bulk, thin-film and other silicon-based solar cells

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[10p-N304-4] Degradation phenomena and reliability issues for photovoltaic modules using novel-type solar cells and encapsulants

〇Kazuma Ito¹, Xu Han¹, Zhengxin Liu², Shinichi Muguruma³, Kazuhiro Gotoh^1,4, Atsushi Masuda^1,4 (1.Grad. Sch. Sci. Tech., Niigata Univ., 2.SIMIT, 3.Kuraray, 4.IRCNT, Niigata Univ.)

Keywords:

PV modules,Accelerated aging test

A total of 36 photovoltaic modules were fabricated using three types of solar cells—SHJ, TOPCon, and PERC—combined with three different encapsulants and four types of backsheets with varying water vapor transmission rates (WVTR). These modules were subjected to damp heat (DH) testing under conditions of 85°C and 85% relative humidity to evaluate their degradation behavior. In SHJ-based modules, the trend of performance degradation differed depending on the encapsulant used, indicating that the degradation mechanisms may vary. In TOPCon-based modules, a distinctive performance degradation was observed only when polyolefin was used as the encapsulant. These findings suggest that the compatibility between encapsulant materials and solar cell structures significantly influences the reliability of photovoltaic modules.