Mechanism of shunting of nanocrystalline silicon solar cells deposited on rough Ag/ZnO substrates

被引:17
作者
Li, Hongbo [1 ]
Franken, Ronald [1 ]
Stolk, Robert L. [1 ]
Rath, Jatindra K. [1 ]
Schropp, Ruud E. I. [1 ]
机构
[1] Univ Utrecht, Fac Sci, NL-3508 TA Utrecht, Netherlands
来源
GETTERING AND DEFECT ENGINEERING IN SEMICONDUCTOR TECHNOLOGY XII | 2008年 / 131-133卷
关键词
shunting; microcrystalline silicon; solar cell; substrate;
D O I
10.4028/www.scientific.net/SSP.131-133.27
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Using a textured substrate is a basic requirement for light trapping in a thin film solar cell. In this contribution, the structure of gc-Si:H n-i-p solar cells developed on a rough Ag/ZnO coated glass substrate is carefully studied, in order to understand the substrate surface morphology dependence of solar cell properties, especially of the yield of working cells. From cross-sectional transmission electron microscopy (TEM) images it is clear that cells developed on substrates with tilted large Ag crystal grains contain pinholes that result in short-circuiting of the entire device. The formation of these pinholes is due to the inability of conformal coverage of the sub-micron sized cavities that are created by these Ag grains. Controlling the Ag deposition temperature is found to be essential to have a well performing mu c-Si:H n-i-p cell.
引用
收藏
页码:27 / 32
页数:6
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