光强和温度对多结太阳电池的影响研究

基于模拟太阳光源的方法,在室内研究了在不同光照强度、不同工作温度下GaAs多结太阳电池的输出特性.通过实验得出:随着光源辐照强度的增加,太阳电池的特性参数:短路电流Isc线性增加,开路电压Voc对数增加,最大输出功率P线性增加,光电转换效率η随聚光比增加到一定程度后减小.对比分析了光强和温度对电池输出特性的影响,数据结...

Research of temperature and light intensity on multi-junction solar cell

Based on the method of sun-light sources simulation,this paper analyzed the GaAs multi-junction solar cell output characteristics under different light intensities and different temperatures.The experiment shows that with the increasing of light intensity of solar simulator,the characteristics parameters short circuit current ISC increased linearly,the open circuit voltage VOC decreased logarithm,the maximum power output Pm increased linearly,and the photoelectric transgormation efficiency η decreased after increasing to a certain level.Comparative analysis of effect of light intensities and temperature to the cell output characteristic was made.The results show that,the temperature impacts the open circuit voltage more significantly,which decreases-7.4mV/℃,and the light intensities impacts the short-circuit current more notablely,which increases 0.013 4mA per concentrate ratio.In summary,under high concentration,the temperature is a relatively important factor to the output characteristics of a solar cell.Cooling facilities is in need.