Structural and photoluminescence properties of Zn1-xMnxO nanoparticles for optoelectronic device applications

Reddy, D Sreekantha and Sharma, SK and Reddy, YD and Reddy, BSY and Gunasekhar, KR and Reddy, P Sreedhara (2008) Structural and photoluminescence properties of Zn1-xMnxO nanoparticles for optoelectronic device applications. In: Journal of Optoelectronics and Advanced Materials, 10 (10). pp. 2607-2610.

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Abstract

High intense photoluminescence Zn1-xMnxO powder samples were prepared by simple solid state reaction method. All the samples were studied for their morphological, structural and photoluminescence properties. X-ray diffraction (XRD) results showed that all the samples were polycrystalline with wurtzite structure. The lattice parameters ‘a’ and ‘c’ varied linearly with composition following Vegard’s law in this composition range. Scanning Electron Microscopy (SEM) studies showed that all the samples investigated were in nanoparticles form with the particle size lying in the range 25 – 50 nm. The room temperature photoluminescence spectra show that the UV emission gradually shifted towards the higher energy side. A blue-shift in the position along with an intense blue emission band was observed with the Mn concentrations, which are ascribed to the quantum confinement effect.

Item Type:	Journal Article
Publication:	Journal of Optoelectronics and Advanced Materials
Publisher:	National Institute of Research & Development for Optoelectronics, Romania
Additional Information:	Copyright of this article belongs to National Institute of Research & Development for Optoelectronics, Romania.
Keywords:	Diluted Magnetic semiconductors;Optoelectronics; Nanoparticles;Photoluminescence.
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	27 Oct 2009 11:02
Last Modified:	19 Sep 2010 04:57
URI:	http://eprints.iisc.ac.in/id/eprint/17535

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