光伏系统
硅
晶体硅
材料科学
光电子学
能量转换效率
工程物理
电气工程
工程类
作者
Ping Wang,Xinlong Yan,Huiyue Wang,Chih-Wei Luo,Chaolong Wang
标识
DOI:10.1016/j.optmat.2022.112821
摘要
Crystalline silicon (c-Si) solar cells cannot make full use of solar energy at present, especially the short wavelength (300–500 nm) energy. Owing to the inherent problem, c-Si photovoltaic (PV) modules are still facing the trouble of low PV conversion efficiency. Applying spectral down-conversion (DC) materials to transform underutilized solar spectrum is an effective way to improve the problem. In this study, inspired by chlorophyll (Chl) fluorescence phenomenon, Chl film were specially prepared by encapsulating Chl with oxygen insulating material as spectral DC material. Then, to enhance Chl stability, nano SiO 2 was added to the film-forming solution. The spectroscopic properties of the Chl films were analyzed, and the output power characteristics of the PV modules coated with the Chl films were inspected. The experimental results indicate that the prepared Chl film has good spectral conversion performance, and can convert light of about 400 nm into about 670–680 nm which is suitable for PV modules. After being exposed outdoors for about 30 days, the maximum power of the PV module coated by the Chl film with SiO 2 is still improved by 9.2%. Since the Chl can be obtained from nature by an economical way, the Chl film is a promising material to improve the power generation efficiency of c-Si PV modules. • Chlorophyll film improves spectral mismatch of crystalline silicon solar cells. • Mechanism of chlorophyll film improving output power of solar cells. • Improving the stability of chlorophyll down conversion film with nano silica. • The film can increase the maximum power of crystalline silicon solar cells by 9.2%.
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