Silicon nanowire-array-textured solar cells for photovoltaic application

Chen Chen, Rui Jia, Huihui Yue, Haofeng Li, Xinyu Liu, Deqi Wu, Wuchang Ding, Tianchun Ye, Seiya Kasai, Hashizume Tamotsu, Junhao Chu, Shanli Wang

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

In this paper, a vertical-aligned silicon nanowires (Si NWs) array has been synthesized and implemented to the Si NW-array-textured solar cells for photovoltaic application. The optical properties of a Si NWs array on both the plane and pyramid-array-textured substrates were examined in terms of optical reflection property. Less than 2% reflection ratio at 800 nm wavelength was achieved. Using leftover monocrystalline Si (c-Si) wafer (125×125 mm 2), a 16.5% energy conversion efficiency, with 35.4% enhancement compared to the pyramid-array-textured c-Si solar cells, was made by the Si NW-array-textured solar cells due to their enhanced optical absorption characteristics. However, without SiNx passivation, the short circuit current reduced due to the increased surface recombination when using Si NWs array as surface texturing, indicating that an optimum surface passivation was prerequisite in high-efficiency Si NW-array-textured solar cells.

Original languageEnglish (US)
Article number094318
JournalJournal of Applied Physics
Volume108
Issue number9
DOIs
StatePublished - Nov 1 2010

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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