Effects of UV on power degradation of photovoltaic modules in combined acceleration tests

被引：24

作者：

Trang Ngo ^{[1
]}

Heta, Yushi ^{[1
]}

Doi, Takuya ^{[2
]}

Masuda, Atsushi ^{[2
]}

机构：

[1] Photovolta Power Generat Technol Res Assoc PVTEC, Minato Ku, Tokyo 1050011, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2016年 / 55卷 / 05期

关键词：

PV MODULES; AGING BEHAVIOR; EVA; PERFORMANCE; COPOLYMER;

D O I：

10.7567/JJAP.55.052301

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

UV exposure and other factors such as high/low temperature, humidity and mechanical stress have been reported to degrade photovoltaic (PV) module materials. By focusing on the combined effects of UV stress and moisture on PV modules, two new acceleration tests of light irradiation and damp heat (DH) were designed and conducted. The effects of UV exposure were validated through a change in irradiation time (UV dosage) and a change of the light irradiation side (glass side vs backsheet side) in the UV-preconditioned DH and cyclic sequential tests, respectively. The chemical corrosion of finger electrodes in the presence of acetic acid generated from ethylene vinyl acetate used as an encapsulant was considered to be the main origin of degradation. The module performance characterized by electroluminescence images was confirmed to correlate with the measured acetic acid concentration and Ag finger electrode resistance. (C) 2016 The Japan Society of Applied Physics

引用

页数：8

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