Journal of
Chemical Engineering and Materials Science

  • Abbreviation: J. Chem. Eng. Mater. Sci.
  • Language: English
  • ISSN: 2141-6605
  • DOI: 10.5897/JCEMS
  • Start Year: 2010
  • Published Articles: 96

Full Length Research Paper

Enhanced photoluminescence from ZnO/ZnS core-shell structure

  Sarmila Dutta1*, Shibabrata Basak2 and Pijus Kanti Samanta3        
  1Department of Physics, IMPS College of Engineering and Technology Malda, India. 2School of Applied Sciences, Haldia Institute of Technology, Haldia, India. 3Department of Physics, Ghatal Rabindra Satabarsiki Mahavidyalaya, Ghatal, Paschim Medinipur, India.
Email: [email protected]

  •  Accepted: 22 February 2012
  •  Published: 31 March 2012

Abstract

 

The effect of ZnS coating over ZnO core is discussed in this present report. Very simple two step wet chemical method was used for the fabrication of this core-shell structure. XRD and HRTEM data reveal the formation of good shell coating over the ZnO core. Photoluminescence spectra shows that emission intensity is at least four times higher when coated with ZnS compare to bare ZnO. Band gap is also calculated using UV-vis spectroscopy. This study will be very useful towards tuning the emission properties and developing intense violet light-emitting and nanophotonic devices.

 

Key words: Core-shell, photoluminescence, violet emission, green emission.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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