Cationic substitution sites in Mn2+-doped ZnS nanoparticles

被引：36

作者：

Beermann P.A.G. ^{[1
]}

McGarvey B.R. ^{[2
]}

Skadtchenko B.O. ^{[2
]}

Muralidharan S. ^{[1
]}

Sung R.C.W. ^{[1
]}

机构：

[1] Department of Chemistry, Western Michigan University, Kalamazoo

[2] School of Physical Sciences, Chemistry and Biochemistry, University of Windsor, Windsor

来源：

Journal of Nanoparticle Research | 2006年 / 8卷 / 2期

关键词：

Cationic substitution sites in ZnS; Cluster formation; EPR spectra; Photoluminescence; X-ray diffraction (XRD); X-ray photoelectron spectroscopy (XPS);

D O I：

10.1007/s11051-005-7525-3

中图分类号：

学科分类号：

摘要：

Mn2+-doped ZnS nanoparticles of average size 2.5±0.3 nm have been studied and characterized in the dopant concentration range 0.1-0.3% using XRD, EPR, XPS and photoluminescence methods. The experimental results obtained from these studies indicate that the doping of Mn2+ occurs primarily at the T d sites at low dopant concentration, causing the4T1(G) → 6A1(S) transition to take place in the host lattice; the observed decrease in the intensity of photoluminescence at high dopant concentration is due to the setting in of the strong Mn2+-Mn2+ interaction arising from cluster formation at the highly distorted sites near the particle surface. © Springer 2006.

引用

页码：235 / 241

页数：6

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