材料科学
堆栈(抽象数据类型)
异质结
光电子学
接触电阻
非晶硅
肖特基势垒
等效串联电阻
电阻率和电导率
无定形固体
半导体
硅
太阳能电池
图层(电子)
晶体硅
纳米技术
电气工程
二极管
化学
计算机科学
结晶学
工程类
电压
程序设计语言
作者
Mehdi Leilaeioun,William A. Weigand,Pradyumna Muralidharan,Mathieu Boccard,Dragica Vasileska,Stephen M. Goodnick,Zachary C. Holman
出处
期刊:2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
日期:2017-06-01
被引量:4
标识
DOI:10.1109/pvsc.2017.8366487
摘要
Silicon heterojunction solar cells are a promising device architecture due to their high efficiencies, yet these cells tend to suffer from high series resistances. Until recently, little has been done to understand the main factors contributing to the high resistance. Here we begin a systematic analysis to determine the important interactions between the different layers in the hole-collecting contact consisting of a stack of a-Si:H(i)/aSi:H(p)/ITO/Ag. We attempt to address how the stack performs when the intrinsic amorphous silicon (a-Si:H(i)) layer thickness is varied. Specifically, we determine how the thickness affects the fill factor of the cell and assess how much of the detriment is due to the contact resistivity. For increasing a-Si:H(i) thicknesses between 4 and 16 nm, we find contact resistivities increasing from 0.48 to 1.9 Ωcm 2 and fill factors decreasing from 76.9% to 71.1%. Additionally, to understand the physics behind these effects, we simulate the contact resistivity variation by modeling the ITO as a Schottky contact and a semiconductor.
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