Enhanced photoluminescence from porous silicon nanowire arrays |
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| Authors: | Chunqian Zhang Chuanbo Li Zhi Liu Jun Zheng Chunlai Xue Yuhua Zuo Buwen Cheng Qiming Wang |
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| Affiliation: | 1.State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China |
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| Abstract: | The enhanced room-temperature photoluminescence of porous Si nanowire arrays and its mechanism are investigated. Over 4 orders of magnitude enhancement of light intensity is observed by tuning their nanostructures and surface modification. It is concluded that the localized states related to Si-O bonds and self-trapped excitations in the nanoporous structures are attributed to the strong light emission. |
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| Keywords: | Si nanowire Porous structure PL 78.55.-m 78.67.Uh 78.55.Mb |
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