激光与光电子学进展, 2017, 54 (11): 111412, 网络出版: 2017-11-17
连续激光对三结GaAs电池的损伤效应
Irradiation Effect of Continuous-Wave Laser on Triple-Junction GaAs Solar Cells
激光光学 激光损伤 三结砷化镓太阳电池 激光诱导电流成像 X射线光电子能谱仪 laser optics laser damage triple-junction gallium arsenide solar cell laser beam induced current imaging X-ray photoelectron spectrometer
摘要
在空气中和真空中,利用波长为1070 nm的连续(CW)激光辐照三结砷化镓(GaAs)太阳电池,通过测试激光辐照前后电池的电流-电压曲线,并利用激光诱导电流(LBIC)成像系统和X射线光电子能谱仪(XPS),研究了三结GaAs太阳电池的损伤情况。结果表明,当激光功率密度为8.4 W/cm2、辐照时间为10 s时,在空气中,底电池Ge熔融短路;在真空中,顶电池Ga0.5In0.5P和底电池Ge均发生短路,说明三结GaAs太阳电池的底电池最容易受到破坏,且电池在真空中比在空气中更容易受到损伤。该研究结果可为三结GaAs太阳电池的激光无线能量传输和损伤机理的研究提供一定的参考。
Abstract
In the air and the vacuum, triple-junction gallium arsenide (GaAs) solar cells are irradiated by the 1070 nm continuous-wave (CW) laser and the current-voltage curves of cells before and after laser irradiation are tested. By using the laser beam induced current (LBIC) measuring system and the X-ray photoelectron spectrometer (XPS), the damage situations of triple-junction GaAs solar cells are analyzed. The results show that, when the laser power density is 8.4 W/cm2 and the irradiation time is 10 s, the bottom-cell Ge is fused and short-circuited in the air, and the top-cell Ga0.5In0.5P and the bottom-cell Ge are both short-circuited in the vacuum, which means the bottom-cell of triple-junction GaAs solar cells is the most easily damaged part and the cell is easier to be destroyed in the vacuum than in the air. These study results can provide references for the research on laser wireless energy transmission and the laser damage mechanisms of triple-junction GaAs solar cells.
周广龙, 徐建明, 陆健, 李广济, 张宏超. 连续激光对三结GaAs电池的损伤效应[J]. 激光与光电子学进展, 2017, 54(11): 111412. Zhou Guanglong, Xu Jianming, Lu Jian, Li Guangji, Zhang Hongchao. Irradiation Effect of Continuous-Wave Laser on Triple-Junction GaAs Solar Cells[J]. Laser & Optoelectronics Progress, 2017, 54(11): 111412.