Abstract

The battery of individual equipment has always been the component that occupies the largest volume. Therefore, the flexible thin-film solar cell is an ideal energy source for individual equipment. This paper tested volt-ampere characteristics of three kinds of solar cells, that are, respectively, made of Si, copper indium gallium selenide (CIGS) and perovskite. The research investigates the open-circuit voltage, short-circuit current, maximum operating power, and photoelectric conversion efficiency, and the test data are analyzed and discussed. The results show that when the light irradiance ≤ 1000 W/m2, with the increase of light irradiance, the short-circuit current and the maximum operating power increase linearly, and the open-circuit voltage increases more and more slowly in logarithmic relation, the photoelectric conversion efficiency of Si solar cells increases rapidly first and then decreases slowly. The photoelectric conversion efficiency of CIGS thin-film solar cells basically remains while the light irradiance ≥ 500 W/m2.

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