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

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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 photo-luminescence (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.

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Acknowledgements

This work was supported by the Iran National Science Foundation (INSF).

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Vali-e-asr University, Rafsanjan, Iran

    M MOLAEI

  2. Department of Physics, Faculty of Science, Tarbiat Modares University, Tehran, Iran

    S POURJAFARI

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  1. M MOLAEI
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  2. S POURJAFARI
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Correspondence to M MOLAEI.

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MOLAEI, M., POURJAFARI, S. Investigation of electroluminescence properties of CdTe@CdS core-shell nanocrystals (NCs). Bull Mater Sci 37, 9–13 (2014). https://doi.org/10.1007/s12034-014-0625-x

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  • DOI: https://doi.org/10.1007/s12034-014-0625-x

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