Improving light trapping and conversion efficiency of amorphous silicon solar cell by modified and randomly distributed ZnO nanorods

Three-dimensional （3D） nanostructures in thin film solar cells have attracted significant attention due to their appli- cations in enhancing light trapping. Enhanced light trapping can result in more effective absorption in solar cells, thus leading to higher short-circuit current density and conver...

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Bibliographic Details
Published in:Chinese physics B 2014-04, Vol.23 (4), p.444-449
Main Author: 贾志楠 张晓丹 刘阳 王延峰 樊君 刘彩池 赵颖
Format: Article
Language:English
Subjects:
Deposition
Nanorods
Photovoltaic cells
Silicon substrates
Solar cells
Three dimensional
Trapping
Zinc oxide
ZnO
捕获
改性
纳米棒
薄膜太阳能电池
转换效率
随机分布
非晶硅太阳能电池
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Summary:Three-dimensional （3D） nanostructures in thin film solar cells have attracted significant attention due to their appli- cations in enhancing light trapping. Enhanced light trapping can result in more effective absorption in solar cells, thus leading to higher short-circuit current density and conversion efficiency. We develop randomly distributed and modified ZnO nanorods, which are designed and fabricated by the following processes： the deposition of a ZnO seed layer on sub- strate with sputtering, the wet chemical etching of the seed layer to form isolated islands for nanorod growth, the chemical bath deposition of the ZnO nanorods, and the sputtering deposition of a thin Al-doped ZnO （ZnO：Al） layer to improve the ZnO/Si interface. Solar cells employing the modified ZnO nanorod substrate show a considerable increase in solar energy conversion efficiency.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/4/046106