Research of silicon solar cells' performance after being irradiated by high power laser

Yu Zhang; Yunfei Li; Yanjie Li; Guomin Zhao; Minsun Chen

doi:10.1117/12.2245799

9 November 2016 Research of silicon solar cells' performance after being irradiated by high power laser

Yu Zhang, Yunfei Li, Yanjie Li, Guomin Zhao, Minsun Chen

Proceedings Volume 10016, High-Power Lasers and Applications VIII; 1001606 (2016) https://doi.org/10.1117/12.2245799
Event: SPIE/COS Photonics Asia, 2016, Beijing, China

Abstract

Compared with traditional methods of energy supply, there is a great possibility to get a more remarkable enhancement of conversion efficiency for laser power (of proper wavelength and intensity) beaming to silicon solar cells. However, it should be noticed that cells may be damaged by high power laser. Based on the background, this essay explores high-power-laser's possible damage to silicon solar cells by analyzing IV curves (obtained by IV tester) and minority-carrier lifetime (measured by open-circuit-voltage-decay method). Research shows that, for 30s irradiation, minority-carrier lifetime decreases to some extent when irradiated by laser of over 5.5W/cm² and the higher laser power density, the more degradation. Similarly, IV curves see a downward trend under laser of over 5.5W/cm². In addition, there is a roughly linear relationship between lifetime and the decrease amount of short circuit current. Moreover, the degradation degree has a close relation with the maximum temperature. The prolonged illumination would not bring about more serious damage if one cell had already reached an equilibrium temperature.

Citation Download Citation

Yu Zhang, Yunfei Li, Yanjie Li, Guomin Zhao, and Minsun Chen "Research of silicon solar cells' performance after being irradiated by high power laser", Proc. SPIE 10016, High-Power Lasers and Applications VIII, 1001606 (9 November 2016); https://doi.org/10.1117/12.2245799

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