红外与毫米波学报, 2012, 31 (1): 1, 网络出版: 2012-02-13
胶体Cu2CdSnS4纳米晶的合成与其性质研究
Synthesis and properties of colloidal Cu2CdSnS4 nanocrystals
摘要
用简易的溶液化学方法合成了胶体Cu2CdSnS4纳米晶.透射电子显微镜(TEM),扫描电子显微镜(SEM),能谱(EDS),X射线衍射(XRD),X射线光电子谱(XPS)和UV-vis-NIR吸收光谱测试表明Cu2CdSnS4胶体纳米晶具有均一的尺寸分布和良好的结晶性，并具有四面体结构.纳米晶中Cu/Cd/Sn/S的化学计量比约为2.07:0.75:1.26:3.92，Cu、Cd、Sn和S四种元素的化学态分别为+1、+2、+4和-2价，与Cu2CdSnS4分子式中的化学态一致.通过外推法估算Cu2CdSnS4纳米晶的禁带宽度为~1.3 eV.
Abstract
Colloidal Cu2CdSnS4 nanocrystals were synthesized by a facile solution chemistry method. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis-NIR absorbance spectroscopy measurements indicated that the Cu2CdSnS4 colloidal nanocrystals have uniform size-distribution and good crystalline quality with a tetrahedral coordinated structure. The stoichiometric ratio Cu/Cd/Sn/S is about 2.07:0.75:1.26:3.92 in Cu2CdSnS4 nanocrystals, and the chemical states of Cu, Cd, Sn and S elements are of +1, +2, +4 and -2, which correspond with the states in the molecular formula of Cu2CdSnS4. The band gap of Cu2CdSnS4 nanocrystals is estimated to be ~1.3 eV by extrapolating method.
刘玉峰, 葛美英, 罗海瀚, 孙艳, 吴杰, 戴宁. 胶体Cu2CdSnS4纳米晶的合成与其性质研究[J]. 红外与毫米波学报, 2012, 31(1): 1. LIU Yu-Feng, GE Mei-Ying, LUO Hai-Han, SUN Yan, WU Jie, DAI Ning. Synthesis and properties of colloidal Cu2CdSnS4 nanocrystals[J]. Journal of Infrared and Millimeter Waves, 2012, 31(1): 1.
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