衬底增强型轻质高效薄膜砷化镓太阳电池

Substrate enhanced light weight high efficiency thin film GaAs solar cell

将蜂窝增强结构引入薄膜砷化镓太阳电池制备工艺,进行了三结砷化镓太阳电池外延设计与生长工艺以及蜂窝结构增强型柔性衬底制备技术研究。通过激光扫描显微镜、EL发光测试、I-V测试等手段分析了衬底增强型轻质高效薄膜砷化镓太阳电池制备工艺及结果。最终成功制备了面积达到24 cm^(2)的薄膜砷化镓太阳电池。其效率达到30.57%(AM0,25℃),质量比功率可达到2.4 kW/kg。这为薄膜砷化镓太阳电池在未来载人航天、临近空间飞行器等应用打下了技术基础。

In this paper,the honeycomb reinforcement structure was introduced into the preparation process of thin film GaAs solar cells.We have studied the epitaxial design,the growth process of three-junction GaAs solar cell and the preparation technology of honeycomb structure enhanced flexible substrate.Through laser scanning microscope,EL luminescence test,I-V test and other methods,the preparation process and results of substrate-enhanced thin film GaAs solar cell were analyzed.Finally,a thin film GaAs solar cell with an area of 24cm^(2) was successfully prepared.Its efficiency reaches 30.57%(AM0,25℃),and its mass specific power is 2.4 kW/kg.This technology of thin film solar cells will be used in many equipments such as manned spaceflight and near space vehicles in the future.