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Citation: Kuang Han-Mao, Deng Zhao-Xiang, Li Chun-Hui, Sun Xiao-Ming, Zhuang Jing, Li Ya-Dong. Synthesis and Photoluminescent Properties of CdS/SiO₂ Nanorod[J]. Acta Physico-Chimica Sinica, ;2002, 18(05): 477-480. doi: 10.3866/PKU.WHXB20020520 shu

Synthesis and Photoluminescent Properties of CdS/SiO₂ Nanorod

1.
Department of Chemistry, Tsinghua University, Beijing　100084;Department of Chemistry, Jinggangshan Normal College, Jian 343009

Received Date: 12 September 2001
Available Online: 15 May 2002

Core/shell structures of CdS/SiO2 were synthesized through the ammonium hydroxide catalyzed hydrolysis of tetraethylorthosilicate(TEOS) in alcohol media containing presynthesized CdS nanorods. Xray diffraction(XRD), transmission electron microscopy(TEM), UVVis spectroscopy and photoluminescence spectroscopy were employed to characterize the obtained coreshell structures. The thickness of the amorphous SiO2 shell ranges from 10 to 30 nm, and increases with the concentration of the TEOS used. The photoluminescence intensity of the coreshell structures is enhanced for the CdS nanorod samples with only a thin layer (< 10 nm) of SiO2 shell on the CdS nanorod, and is reduced for the sample with a thicker SiO2 shell. Possible reasons contributing to the variations of the photoluminescence were discussed.
- Core shell structure;CdS nanorods;Semiconductor;Composite structure;Photoluminescence
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通讯作者: 陈斌, bchen63@163.com

Synthesis and Photoluminescent Properties of CdS/SiO₂ Nanorod