期刊
NANOSCALE RESEARCH LETTERS
卷 7, 期 -, 页码 -出版社
SPRINGER
DOI: 10.1186/1556-276X-7-306
关键词
Silicon; Solar cell; Antireflection; ZnO nanowhisker; Efficiency
资金
- National Natural Science Foundation of China [60906002, 50832006]
- National Key Technology RD Program [2011BAE03B13]
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, CAS [2008DP173016]
- Innovation Team Project of Zhejiang Province [2009R50005]
An efficient antireflection coating is critical for the improvement of silicon solar cell performance via increased light coupling. Here, we have grown well-aligned ZnO nanowhisker (NW) arrays on Czochralski silicon solar cells by a seeding-growth two-step process. It is found that the ZnO NWs have a great effect on the macroscopic antireflection effect and, therefore, improves the solar cell performance. The ZnO NW array-coated solar cells display a broadband reflection suppression from 500 to 1,100 nm, and the minimum reflectance smaller than 3% can easily be achieved. By optimizing the time of ZnO NW growth, it has been confirmed that an increase of 3% relatively in the solar cell efficiency can be obtained. These results are quite interesting for the application of ZnO nanostructure in the fabrication of high-efficiency silicon solar cells.
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