Solar cell UV‐induced degradation or module discolouration: Between the devil and the deep yellow sea
نویسندگان
چکیده
For decades, photovoltaic (PV) module yellowing caused by UV exposure has been observed on solar arrays in operation. More than an aesthetic inconvenience, this phenomenon can severely impair performance and promote other degradation mechanisms undermining the photoprotection provided encapsulation. To understand how reaction may affect current encapsulation materials, silicon heterojunction (SHJ) monocell modules with either UV-cut or UV-transparent commercial encapsulants were aged under irradiation examined visual inspection, fluorescence imaging flash tests. Despite they provide, only that stabilised absorbers underwent discolouration. On one hand, absorber photodegradation is responsible for formation of yellow chromophores light transmission to cell, which could cause net decrease photogenerated high as 4% after 4200 h accelerated ageing. UV-induced SHJ cells accounts a lower loss (3%), contrast previous observations literature. According behaviour formulation, stability absorbing additives be improved ensure durability device over 30 years.
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ژورنال
عنوان ژورنال: Progress in Photovoltaics
سال: 2023
ISSN: ['1062-7995', '1099-159X']
DOI: https://doi.org/10.1002/pip.3725