Title

Multicolor luminescence from transition metal ion (Mn2+ and CU2+) doped ZnS nanoparticles

Authors

Authors

A. Datta; S. Biswas; S. Kar;S. Chaudhuri

Comments

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Abbreviated Journal Title

J. Nanosci. Nanotechnol.

Keywords

ZnS nanoparticles; solvothermal process; doping; photoluminescence; OPTICAL-PROPERTIES; PHOTOLUMINESCENCE PROPERTIES; ELECTROLUMINESCENT; DEVICES; MAGNETIC-PROPERTIES; NANOCRYSTALS; FILMS; NANOCLUSTERS; TEMPERATURE; NANORIBBONS; DEPOSITION; Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials; Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter

Abstract

Mn and Cu doped ZnS nanoparticles in powder form were prepared by a simple solvothermal route. Particle size and crystal structure of the products were investigated through X-ray diffraction study revealing the formation of cubic ZnS nanoparticles of average diameter 2.5 nm. Particle size was also verified by the high resolution transmission electron microscopic images. Blue emission at similar to 445 nm was observed from the undoped sample, which was attributed to the presence of large surface defects. With increasing doping concentration the defect related emission gradually quenches and subsequently the impurity related emissions appeared. Mn doped samples exhibited orange emission at similar to 580 nm which may be attributed to the transition between T-4(1) and (6)A(1) energy levels of the Mn2+ 3d states. Whereas, the Cu doped ZnS nanoparticles exhibited a red shifted strong blue emission at similar to 466 nm which is attributed to the transition of the electrons from the surface states to the 't(2)' levels of Cu impurities.

Journal Title

Journal of Nanoscience and Nanotechnology

Volume

7

Issue/Number

10

Publication Date

1-1-2007

Document Type

Article; Proceedings Paper

Language

English

First Page

3670

Last Page

3676

WOS Identifier

WOS:000250388600050

ISSN

1533-4880

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