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Green photoluminescence in ZnO crystals: a combined study using positron annihilation, photoluminescence, and hall measurements
Journal article   Peer reviewed

Green photoluminescence in ZnO crystals: a combined study using positron annihilation, photoluminescence, and hall measurements

N Parmar, S Swain and K Lynn
Journal of materials science. Materials in electronics, Vol.26(12), pp.10138-10140
12/2015
Handle:
https://hdl.handle.net/2376/116745

Abstract

Optical and Electronic Materials Characterization and Evaluation of Materials Material Science
The 510–525 nm green emission in melt grown Cermet bulk ZnO single crystals is investigated. It was observed that the green emission intensity is strongly influenced by the presence of zinc vacancies. Green emission intensity was found to decrease by more than two orders of magnitude by reducing zinc vacancy concentration upon annealing in cadmium metal environment. Positron annihilation spectroscopy, photoluminescence and hall measurements support this argument.

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