| The investigation of ZnO：Al2O3/metal composite back reflectors in amorphous silicon germanium thin film solar cells |
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| 引用本文： | 王光红,赵雷,闫保军,陈静伟,王革,刁宏伟,王文静.The investigation of ZnO：Al2O3/metal composite back reflectors in amorphous silicon germanium thin film solar cells[J].中国物理 B,2013(6):588-590. |
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| 作者姓名： | 王光红 赵雷 闫保军 陈静伟 王革 刁宏伟 王文静 |
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| 基金项目： | Project supported by the National Basic Research Program of China （Grant No, 2011CBA00705） and the High Technology Research Program of China （Grant No. 2011AA050502）. |
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| 摘 要： | Different aluminum-doped ZnO （AZO）/metal composite thin films, including AZO/Ag/Al, AZO/Ag/nickelchromium alloy （NiCr）, and AZO/Ag/NiCr/Al, are utilized as the back reflectors of p-i-n amorphous silicon germanium thin film solar cells. NiCr is used as diffusion barrier layer between Ag and Al to prevent mutual diffusion, which increases the short circuit current density of solar cell. NiCr and NiCr/AI layers are used as protective layers of Ag layer against oxidation and sulfurization, the higher efficiency of solar cell is achieved. The experimental results show that the performance of a-SiGe solar cell with AZO/Ag/NiCr/Al back reflector is best. The initial conversion efficiency is achieved to be 8.05%.
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| 关 键 词： | a-SiGe solar cells composite back reflector NiCr diffusion barrier layer |
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