Optical degradation impact on the spectral performance of photovoltaic technology

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:141

Article

Fernandez-Solas, Alvaro¹  Micheli, Leonardo¹  Almonacid, Florencia¹  Fernandez, Eduardo F.¹ 

[1] Univ Jaen UJA, CEACTEMA, Adv Photovolta Technol AdPVTech, Lagunillas Campus, Jaen 23071, Spain

关键词: Degradation;    Irradiance;    Photovoltaic;    Spectral losses;    Soiling;    Optical transmittance;   

DOI  :  10.1016/j.rser.2021.110782

来源: Elsevier

【 摘 要 】

The exponential growth of global capacity along with a reduction in manufacturing costs in the last two decades has caused photovoltaic (PV) energy technology to reach a high maturity level. As a consequence, currently, researchers from all over the world are making great efforts to analyse how different types of degradation impact this technology. This study provides a detailed review of the impact of different optical degradation mechanisms, which mainly affect the transmittance of the top-sheet encapsulant, on the spectral response of the PV modules. The impact on the spectral performance of PV modules is evaluated by considering the variations of the shortcircuit current since this is the most widely used parameter to study the spectral impact in outdoors. Some of the most common types of optical degradation affecting the performance of PV modules worldwide, such as discoloration, delamination, aging and soiling have been addressed. Due to the widely documented impact of soiling on the spectral response of modules, this mechanism has been specially highlighted in this study. On the other hand, most of the publications analysed in this review report optical degradation in PV modules with polymeric encapsulant materials. Furthermore, an innovative procedure to quantify the spectral impact of degradation on PV devices is presented. This has been used to analyse the impact of two particular cases of degradation due to soiling and discoloration on the spectral response of different PV technologies.

【 授权许可】

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