| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Blue Luminescent Properties of Silicon Nanowires Grown by a Solid-Liquid-Solid Method |
| PENG Ying-Cai1,2, FAN Zhi-Dong1, BAI Zhen-Hua1, ZHAO Xin-Wei3, LOU Jian-Zhong1, CHENG Xu1 |
| 1College of Electronic and Informational Engineering, Hebei University, Baoding 071002 2Key Laboratory of Semiconductor Material Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 3Department of Physics, Tokyo University of Science, Tokyo 162-8601, Japan |
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PENG Ying-Cai, FAN Zhi-Dong, BAI Zhen-Hua et al 2010 Chin. Phys. Lett. 27 057305 |
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Abstract Silicon nanowires (SiNWs) were grown directly from n-(111) single-crystal silicon (c-Si) substrate based on a solid-liquid-solid mechanism, and Au film was used as a metallic catalyst. The room temperature photoluminescence properties of SiNWs were observed by an Xe lamp with an exciting wavelength of 350 nm. The results show that the SiNWs exhibit a strongly blue luminescent band in the wavelength range 400-480 nm at an emission peak position of 420 nm. The luminescent mechanism of SiNWs indicates that the blue luminescence is attributed to the oxygen-related defects, which are in SiOx amorphous oxide shells around the crystalline core of SiNWs.
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| Keywords:
73.21.Hb
78.55.Ap
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Received: 26 January 2010
Published: 23 April 2010
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