Facile synthesis of highly luminescent Mg(II), Cu(I)-codoped CdS/ZnSe core/shell nanoparticles

被引：29

作者：

Bui The Huy ^{[1
,2
]}

Seo, Min-Ho ^{[1
]}

Pham Thanh Phong ^{[3
]}

Lim, Jae-Min ^{[1
]}

Lee, Yong-Ill ^{[1
]}

机构：

[1] Changwon Natl Univ, Dept Chem, Chang Won 641773, South Korea

[2] NhaTrang Inst Technol & Res Applicat, Nhatrang, Vietnam

[3] Dongguk Univ, Dept Adv Mat Chem, Gyeongju 780714, South Korea

来源：

CHEMICAL ENGINEERING JOURNAL | 2014年 / 236卷

基金：

新加坡国家研究基金会;

关键词：

Coprecipitation; Nanoparticles; Mg; Cu; CdS/ZnSe; Fluorescent; CDS QUANTUM DOTS; PHOTOLUMINESCENCE PROPERTIES; NANOCRYSTALS; CU; HETEROSTRUCTURES; DYNAMICS; DESIGN; GROWTH; PROBES; CDTE;

D O I：

10.1016/j.cej.2013.09.079

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Magnesium and copper doped CdS/ZnSe (core/shell) nanoparticles were synthesized through direct chemical solution routes in organic solvent. X-ray powder diffraction (XRD) pattern confirmed the mixing of cubic and wurtzite structures. The Mg or Cu-doped CdS shows the obvious blue shift of photolumimescent spectra due to the replacement of Cd ions with Mg or Cu ions. However, the concomitant presence of Mg and Cu, emission peaks relatively shifts to the red range in comparison with that of Cu-doped CdS. The photoluminescent intensity of CdS:Mg,Cu/ZnSe are much higher than that of the undoped CdS and CdS/ZnSe. The PL intensities were also strongly affected by the presence of octadecylamine and increased more than 4 times. The dopant ions, Mg and Cu, play an important role in energy transfer in the lattice. The results shows that CdS:Mg,Cu/ZnSe NPs give not only the luminescences in various region but also the excellent properties of CdS/ZnSe. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：75 / 81

页数：7

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