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Cd(1-x)Zn(x)S:Mn2+纳米晶体的光致发光研究

Photoluminescence studies on Cd(1-x)Zn(x)S:Mn2+ nanocrystals.

作者信息

Sethi Ruchi, Kumar Lokendra, Pandey A C

机构信息

Nanophosphor Application Centre, Physics Department, University of Allahabad, Allahabad 211002, India.

出版信息

J Nanosci Nanotechnol. 2009 Sep;9(9):5329-34. doi: 10.1166/jnn.2009.1153.

Abstract

Highly monodispersed, undoped and doped with Mn2+, binary and ternary (CdS, ZnS, Cd(1-x)Zn(x)S) compound semiconductor nanocrystals have been synthesized by co-precipitation method using citric acid as a stabilizer. As prepared sample are characterized by X-ray diffraction, Small angle X-ray scattering, Transmission electron microscope, Optical absorption and Photoluminescence spectroscopy, for their optical and structural properties. X-ray diffraction, Small angle X-ray scattering and Transmission electron microscope results confirm the preparation of monodispersed nanocrystals. Photoluminescence studies show a significant blue shift in the wavelength with an increasing concentration of Zn in alloy nanocrystals.

摘要

采用柠檬酸作为稳定剂,通过共沉淀法合成了高度单分散、未掺杂以及掺杂了Mn2+的二元和三元(CdS、ZnS、Cd(1-x)Zn(x)S)复合半导体纳米晶体。对所制备的样品进行了X射线衍射、小角X射线散射、透射电子显微镜、光吸收和光致发光光谱表征,以研究其光学和结构性质。X射线衍射、小角X射线散射和透射电子显微镜结果证实了单分散纳米晶体的制备。光致发光研究表明,随着合金纳米晶体中Zn浓度的增加,波长发生显著蓝移。

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