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    • Investigation of electroluminescence properties of CdTe@CdS core-shell nanocrystals (NCs)

      M Molaei S Pourjafari

      Volume 37 Issue 1 February 2014 pp 9-13

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/037/01/0009-0013

    • Keywords

       

      CdTe@CdS nanocrystals; photoluminescence; electroluminescence.

    • Abstract

       

      In this work, CdTe@CdS NCs were synthesized using a thermochemical approach and synthesized NCs were used as an emissive layer, a light emitting device, with ITO/MoO3/PVK/CdTe@CdS(core-shell)/Mg:Ag structure. Structural and optical properties of synthesized NCs were investigated by means of XRD, UV–Vis and photoluminescence (PL) analyses. Fabricated device was characterized by electroluminescence spectra. XRD analysis demonstrated cubic phase NCs. Photoluminescence spectra showed a narrow band emission with a peak centred at about 600 nm. Fabricated device showed an emission at 600 nm, which is related to CdTe@CdS NCs. Turn on voltage of fabricated device is about 8 V and brightness is 53.7 Cd/m2 at a working voltage of about 14.57 V.

    • Author Affiliations

       

      M Molaei1 S Pourjafari1 2

      1. Department of Physics, Faculty of Science, Vali-e-asr University, Rafsanjan, Iran
      2. Department of Physics, Faculty of Science, Tarbiat Modares University, Tehran, Iran

    • Dates

       
      Published
      February 2014
      Manuscript received
      24 October 2012
      Manuscript revised
      10 November 2012

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