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首页> 外文期刊>Crystal Research and Technology: Journal of Experimental and Industrial Crystallography >Preparation and characterization of chemically deposited (Cd-0.7-Zn-0.3)S : CdCl2,Gd nanocrystalline films
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Preparation and characterization of chemically deposited (Cd-0.7-Zn-0.3)S : CdCl2,Gd nanocrystalline films

机译：化学沉积（Cd-0.7-Zn-0.3）S：CdCl2，Gd纳米晶薄膜的制备与表征

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摘要

Nanocrystalline films of (Cd-0.7-Zn-0.3)S:CdCl2,Gd are prepared by chemical deposition technique on microscopic glass substrates with varied concentrations of capping agents thiophenol and methanol. The deposition is based on the principle of precipitation followed by condensation. Results of XRD, SEM, optical absorption spectra and photoluminescence emission spectra are presented. The crystalline nature of (Cd-0.7-Zn-0.3)S:CdCl2,Gd was found by XRD studies in which different diffraction peaks of CdS and ZnS are observed. The SEM micrographs show long tubes and irregular distributions of particles in presence of capping agents. The blue shift observed from optical absorption spectra in the present case indicates a quantization effect. Band gaps are also found to increase due to particle size reduction. The photoluminescence emission spectra show shift of peaks in the lower wavelength side due to reduction in particle size. The particle sizes are determined from optical absorption and XRD studies. (C) 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim.
机译：（Cd-0.7-Zn-0.3）S：CdCl2，Gd纳米晶膜是通过化学沉积技术在具有不同浓度的封端剂硫酚和甲醇的微玻璃基板上制备的。沉积基于沉淀然后冷凝的原理。给出了XRD，SEM，光吸收光谱和光致发光光谱的结果。通过XRD研究发现了（Cd-0.7-Zn-0.3）S：CdCl2，Gd的晶体性质，其中观察到了CdS和ZnS的不同衍射峰。 SEM显微照片显示存在封端剂时，管长且颗粒分布不规则。从光学吸收光谱观察到的蓝移在当前情况下指示量化效果。还发现由于颗粒尺寸减小，带隙增加。光致发光发射光谱显示由于粒径减小而在较低波长侧的峰移动。粒径是通过光吸收和XRD研究确定的。 （C）2007 WILEY-VCH Verlag GmbH and Co. KGaA，Weinheim。

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