Accelerated exposure tests of encapsulated Si solar cells and encapsulation materials

被引：0
|
作者：
Pern, FJ [1 ]
Glick, SH [1 ]
机构：
[1] Natl Renewable Energy Lab, Natl Ctr Photovolta, Div Engn & Reliabil, Golden, CO 80401 USA
来源：
NCPV PHOTOVOLTAICS PROGRAM REVIEW: PROCEEDINGS OF THE 15TH CONFERENCE | 1999年 / 462卷
关键词：
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
We have conducted a series of accelerated exposure test (AET) studies for various crystalline-Si (c-Si) and amorphous-Si (a-Si) cell samples that were encapsulated with different superstrates, pottants, and substrates. Nonuniform browning patterns of ethylene vinyl acetate (EVA) pottants were observed for glass/EVA/glass-encapsulated c-Si cell samples under solar simulator exposures at elevated temperatures. The polymer/polymer-configured laminates with Tedlar or Tefzel did not discolor because of photobleaching reactions, but yellowed with polyester or nylon top films. Delamination was observed for the polyester/EVA layers on a-Si minimodules and for a polyolefin-based thermoplastic pottant at high temperatures. For all tested c-Si cell samples, irregular changes in the current-voltage parameters were observed that could not be accounted for simply by the transmittance changes of the superstrate/pottant layers. Silicone-type adhesives used under UV-transmitting polymer top films were observed to cause greater cell current/efficiency loss than EVA or polyethylene pottants.
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收藏
页码：559 / 564
页数：6
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