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Title of Journal: J Mater Sci Mater Electron

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Abbravation: Journal of Materials Science: Materials in Electronics

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Springer US

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DOI

10.1007/s00406-009-0039-8

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1573-482X

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Defect based violet–blue emission of Mg doped ZnO

Authors: Zein K Heiba Mohamed Bakr Mohamed N G Imam
Publish Date: 2015/05/23
Volume: 26, Issue: 9, Pages: 6344-6351
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Abstract

This paper describes structural and optical characterization of Mg doped ZnO nanoparticles The system Zn1−xMgxO with x = 00 001 003 005 01 were prepared by a simple chemical method and annealing at different temperatures T = 500 700 and 900 °C XRD spectra and the Rietveld refinement show that the crystalline phase of these samples belongs to the wurtzite hexagonal structure of space group P63mc The PL results show three main emission bands in the violet and blue emission regions The presence of several emission bands are attributed to free excitation transitions interstitial Zn local zinc vacancy single ionized oxygen vacancy and deep level emissions PL studies at 500 °C revealed that visible PL emission was enhanced with doping concentration x Mg doped ZnO structures have changed the optical properties significantly

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