单色近红外激光对晶硅电池光伏特性影响的研究

INFLUENCE OF MONOCHROMATIC NEAR-INFRARED LASER ON PHOTOVOLTAIC CHARACTERISTICS OF CRYSTALLINE SILICON SOLAR CELL

选用波长为1064 nm的近红外激光作为光源,扩散结晶硅电池与硅异质结电池为接收样品,测试电池在不同入射光强下的J-V输出特性。发现在入射光强升高时,2种电池的开路电压、短路电流密度均对应增加。传统扩散结晶硅电池的填充因子与转换效率随入射光强的升高先升高后降低,硅异质结电池的填充因子与转换效率随入射光强的升高而降低。对晶硅电池近红外激光响应特性的研究,为近空间飞行器的夜间充能提供了理论和实验依据。

A near-infrared laser with a wavelength of 1064 nm is selected as the light source.A traditional diffused crystalline silicon cell and SHJ solar cells are chosen to be the light receiving samples.The current-voltage output characteristics of the solar cells are tested under different light intensities.As the incident light intensity increasing,the open circuit voltage and the short-circuit current of the two types of cells increase correspondingly.For the diffused crystalline silicon cell,the fill factor increases at first,and then decreases.The fill factor of the SHJ cells keep declining with the stronger laser beam.The efficiency of the crystalline silicon cell increases first and then decreases.The efficiency of the SHJ cell decreases as the incident laser light intensity increases.Through the research on the near-infrared laser response characteristics of silicon-based solar cells,this work will provide theoretical and experimental basis for the nearspace aircraft’s nighttime charging.