Title

Multicolor Luminescence From Transition Metal Ion (Mn 2+ And Cu 2+) Doped Zns Nanoparticles

Keywords

Doping; Photoluminescence; Solvothermal process; ZnS nanoparticles

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 ∼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 ∼580 nm which may be attributed to the transition between 4T 1 and 6A 1 energy levels of the Mn 2+ 3d states. Whereas, the Cu doped ZnS nanoparticles exhibited a red shifted strong blue emission at ∼466 nm which is attributed to the transition of the electrons from the surface states to the 't 2' levels of Cu impurities. Copyright © 2007 American Scientific Publishers All rights reserved.

Publication Date

10-1-2007

Publication Title

Journal of Nanoscience and Nanotechnology

Volume

7

Issue

10

Number of Pages

3670-3676

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1166/jnn.2007.810

Socpus ID

41649083973 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/41649083973

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