一种用于BIPV的半透明非晶硅薄膜太阳能电池的研究

摘要

A semitransparent A-Si thin film solar cell is composed of a highly conductive transparent TCO /Ag film back e-lectrode and a special designed ZnO/TiO2 antireflection film which is used to compensate the decrease in back electrode reflection light absorption .The experiment shows that with 10~15 nm thickness Ag film and 200~300 nm AZO film as back electrode and ZnO (65 nm in thickness)/TiO2(50 nm in thickness) antireflection film, the new semitransparent A-Si thin film solar cell can get 39.76 W output power and 20.17 %transmittance in average , while the traditional semitransparent solar cell gets 35.3 W output power at 20.07 %transmittance in average .%利用一种半透明非晶硅薄膜太阳能电池采用高导电性能的透明银（ Ag）薄膜和TCO薄膜组成透明的背电极代替了普通的不透明铝背电极，通过ZnO／TiO2薄膜组成复合增透膜提升入射光能，弥补透明背电极的背反射减弱问题。实验采用磁控溅射法制备厚度为10～15 nm的银薄膜与200～300 nm厚度AZO薄膜为透明背电极，采用厚度为65 nm的ZnO薄膜和50 nm的TiO2薄膜为增透膜，制备的电池样品平均输出功率为39．76 W，透光率为20．17％，对比相同电池工艺的传统半透明非晶硅薄膜太阳能电池组件，有效地减少了光损失，提高了电导率。