期刊
APPLIED PHYSICS LETTERS
卷 106, 期 9, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4914372
关键词
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资金
- National Natural Science Foundation of China [51402106, 51372082, 51172069, 50972032, 61204064, 51202067, 91333122]
- Ph.D. Programs Foundation of Ministry of Education of China [20110036110006, 20120036120006, 20130036110012]
- Par-Eu Scholars Program
- Fundamental Research Funds for the Central Universities
The length of the silicon nanowire (SiNW) is a key parameter in photovoltaic devices, as it dramatically decides the light-harvesting and carrier recombination. Here, we develop a method to determine the optimal SiNW length for photovoltaic devices, by comparing the light-harvesting efficiency of SiNWs with various lengths. The light-harvesting efficiency is measured by the light intensity in the SiNW, and the fraction of the length with high light intensity in its whole length. Under these criteria, we find that the optimal SiNW length is around 3 mu m. This method is helpful in further optimization and application of SiNW-based solar cells. (C) 2015 AIP Publishing LLC.
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