Thermal oxidation strategy for the synthesis of phase-controlled GeO2 and photoluminescence characterization

Shinde, Satish Laxman and Nanda, Karuna Kar (2013) Thermal oxidation strategy for the synthesis of phase-controlled GeO2 and photoluminescence characterization. In: CRYSTENGCOMM, 15 (6). pp. 1043-1046.

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Abstract

We report the synthesis of trigonal and tetragonal phase GeO2 films/microrods from a Ge wafer/powder by thermal oxidation. Both trigonal and tetragonal GeO2 exhibit excitation-dependent luminescence. Trigonal GeO2 exhibits strong green luminescence while tetragonal GeO2 exhibits strong blue luminescence when excited with ultra-violet light. Yellow-red luminescence is observed when both the phases are excited with green light. The emission wavelength varies almost linearly with the excitation wavelength both for trigonal and tetragonal GeO2. The variation is significant in the case of tetragonal GeO2, indicating a potential wavelength converter material.

Item Type:	Journal Article
Publication:	CRYSTENGCOMM
Publisher:	ROYAL SOC CHEMISTRY
Additional Information:	Copyright for this article belongs to ROYAL SOC CHEMISTRY, ENGLAND
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	20 Feb 2013 08:48
Last Modified:	20 Feb 2013 08:48
URI:	http://eprints.iisc.ac.in/id/eprint/45825

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