非金属材料放气对砷化镓电池的影响分析

目的提高砷化镓电池的应用效率。方法以航天器常用灰皮电缆作为放气源,通过电池性能与透过率关系试验和污染物沉积量与透过率关系试验研究,分析材料放气对砷化镓电池的性能影响。结果随着非金属材料放气沉积量的增多,砷化镓电池的短路电流不断减小。当污染沉积量达到4×10-5g/cm2时,砷化镓电池的短路电流变化量为23 m A,变化率为10.9%;当污染沉积量达到1.26×10-4g/cm2时,砷化镓电池的短路电流变化量为42 m A,变化率为20.0%。结论非金属材料放气是造成太阳电池性能下降的因素之一。

Effects of Outgassing of Non-metal Materials on GaAs Solar Cell

Objective To improve the application efficiency of GaAs solar cell. Methods Grey-cables that were commonly used for spacecrafts were taken as the outgassing source, the effects of outgassing of non-metal materials on GaAs solar cell were analyzed through the relationship test between the power of solar cell and transmittance and the relationship test between the depositing mass of contaminants and transmittance. Results The short circuit current of GaAs solar cells decreased with the increase of deposition of outgassing of non-metal materials. The short circuit current of GaAs solar cells decreased by 23 mA and the variety ratio was 10.9% , when the depositing contaminants arrived at 4 × 10-5 g/cm2. The short circuit current of GaAs solar cells decreased by 42 mA and the variety ratio was 20.0%, when the depositing contaminants arrived at 6×10-4 g/cm2. Conclusion Outgassing of non-metal materials was one of the factors causing degenerated performance of solar cells.