[16p-K308-1~14] 16.3 Bulk, thin-film and other silicon-based solar cells

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[16p-K308-9] Degradation Mechanism of PVB Encapsulant in PV Modules Used Outdoors in the Middle East for 38 Years

〇(M1)Kazuma Ito¹, Yudai Sato¹, Mohammed Dahesh^2,3, Mohammed Al-Matwakel³, Marwan Dhamrin⁴, Kazuhiro Gotoh^1,5, Atsushi Masuda^1,5 (1.Grad. School Sci. Tech., Niigata Univ., 2.YSMO, 3.Fac. Sci. Sana'a Univ., 4.Grad. School Eng., Osaka Univ., 5.IRCNT, Niigata Univ.)

Keywords:

photovoltaic module,encapsulant,PVB

This study aims to analyze the causes of degradation in the encapsulant material PVB of solar cell modules that were used outdoors in Yemen for 38 years and to investigate the mechanism behind the performance degradation. It is believed that UV light converted the hydroxyl groups in the PVB to ester bonds, contributing to the performance deterioration.