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Issue 6, 2013
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Thermal oxidation strategy for the synthesis of phase-controlled GeO2 and photoluminescence characterization

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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.

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

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The article was received on 19 Oct 2012, accepted on 11 Dec 2012 and first published on 11 Dec 2012


Article type: Communication
DOI: 10.1039/C2CE26721G
CrystEngComm, 2013,15, 1043-1046

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

    S. L. Shinde and K. K. Nanda, CrystEngComm, 2013, 15, 1043
    DOI: 10.1039/C2CE26721G

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