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A simple method of synthesis and optical properties of Mn doped ZnO nanocups

Chakraborty, S and Tiwary, CS and Kole, AK and Kumbhakar, P and Chattopadhyay, K (2013) A simple method of synthesis and optical properties of Mn doped ZnO nanocups. In: MATERIALS LETTERS, 91 . pp. 379-382.

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Official URL: http://dx.doi.org/10.1016/j.matlet.2012.10.034

Abstract

A combination of chemical and thermal annealing techniques has been employed to synthesize a rarely reported nanocup structure of Mn doped ZnO with good yield. Nanocup structures are obtained by thermally annealing the powder samples consisting of nanosheets, synthesized chemically at room temperature, isochronally in a furnace at 200-500 degrees C temperature range for 2 h. Strong excitonic absorption in the UV and photoluminescence (PL) emission in UV-visible regions are observed in all the samples at room temperature. The sample obtained at 300 degrees C annealing temperature exhibits strong PL emission in the UV due to near-band-edge emission along with very week defect related emissions in the visible regions. The synthesized samples have been found to be exhibiting stable optical properties for 10 months which proved the unique feature of the presented technique of synthesis of nanocup structures. (C) 2012 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to ELSEVIER SCIENCE BV, NETHERLANDS
Keywords: Nanocrystalline materials;Luminescence;Optical materials and properties;Nanocup;Mn doped ZnO
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Francis Jayakanth
Date Deposited: 06 Mar 2013 11:06
Last Modified: 06 Mar 2013 11:06
URI: http://eprints.iisc.ac.in/id/eprint/45951

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