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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/043/0199

    • Keywords

       

      Carbon; quantum dots; excimer; photoluminescence spectrum.

    • Abstract

       

      The attractive aspect of excitation related to fluorescence nature in carbon quantum dots (CQD) has guided to several assumptions correlated with clusters size distribution, shapes as well as presence of different emissive states. Inthis study, a dimer–excimer model of photoluminescence (PL) in CQD describing discrete multiple electronic states for the excitation-dependent emission is described. The functional dependence of the characteristic width of the diffusespectra of PL on the size of a quantum dots are calculated. The effective width of PL spectrum can be tuned from 0.1 to 1 eV.

    • Author Affiliations

       

      S E KUMEKOV1 N K SAITOVA1 K S MARTIROSYAN2

      1. Satbayev University, 050013 Almaty, Kazakhstan
      2. Department of Physics and Astronomy, University of Texas at Rio Grande Valley, Brownsville, TX 78520, USA
    • Dates

       
  • Bulletin of Materials Science | News

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