材料科学
光电子学
等效串联电阻
二极管
退火(玻璃)
太阳能电池
开路电压
带隙
太阳能
短路
电压
复合材料
电气工程
工程类
作者
K. Wang,Oki Gunawan,Teodor K. Todorov,Byungha Shin,S. Jay Chey,N. A. Bojarczuk,David B. Mitzi,Supratik Guha
摘要
High efficiency Cu2ZnSnS4 solar cells have been fabricated on glass substrates by thermal evaporation of Cu, Zn, Sn, and S. Solar cells with up to 6.8% efficiency were obtained with absorber layer thicknesses less than 1 μm and annealing times in the minutes. Detailed electrical analysis of the devices indicate that the performance of the devices is limited by high series resistance, a “double diode” behavior of the current voltage characteristics, and an open circuit voltage that is limited by a carrier recombination process with an activation energy below the band gap of the material.
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