1070nm连续激光辐照三结GaAs太阳电池的实验研究

发布时间：2018-03-14 00:06

本文选题：激光技术　切入点：连续激光　出处：《激光技术》2017年03期 　论文类型：期刊论文

【摘要】：为了研究真空环境下波长为1070nm连续激光辐照对三结砷化镓太阳电池输出的影响,采用实验研究的方法测量了不同功率密度激光作用下太阳电池背面温度和负载电压的实时变化。当激光功率密度为8.4W/cm2时,温度升高显著,负载电压下降趋近于零,激光作用结束,电压恢复至初始电压的53%;继续增大激光功率密度至11.7W/cm2,经2.3s后,负载电压降为零且不能恢复,电池已毁伤。结果表明,连续激光作用会引起电池温升,温度升高使负载电压下降;作用激光功率密度较小时,电池温升幅度较小,负载电压下降幅度也较小,激光停止后,负载电压能逐渐恢复至初始状态;作用激光功率密度较大时,温升幅度也较大,引起负载电压下降显著,即使激光停止作用,负载电压也不能恢复至初值,此时说明电池已有损伤。该实验结果可以在一定程度上为激光损伤电池机理的研究提供参考依据。
[Abstract]:In order to study the effect of 1070nm CW laser irradiation on the output of tri-junction GaAs solar cells in vacuum environment, The real time changes of temperature and load voltage of solar cells under the action of laser with different power density have been measured by the method of experiment. When the laser power density is 8.4 W / cm ~ 2, the temperature increases significantly and the load voltage drops to zero. At the end of the laser action, the voltage recovers to 53 of the initial voltage, and the laser power density continues to increase to 11.7 W / cm ~ 2. After 2.3 s, the load voltage drops to zero and the battery is damaged. The results show that the continuous laser action will cause the cell temperature to rise. When the laser power density is small, the temperature rise of the battery is smaller, and the load voltage is smaller. After the laser stops, the load voltage can gradually recover to the initial state. When the laser power density is high, the amplitude of temperature rise is also larger, which causes the load voltage to decrease significantly. Even if the laser stops, the load voltage can not be restored to the initial value. The experimental results can provide a reference for the study of the mechanism of laser damage to a certain extent.
【作者单位】：南京理工大学理学院;上海空间电源研究所;
【基金】：江苏省自然科学基金资助项目(BK20130751)
【分类号】：TM914.4;TN249

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