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

    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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