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Issue 5, 2015
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Crystal phase transformation and doping-induced blue emission of Eu-doped InOOH and cubic/corundum-type rhombohedral In2O3 nanowires

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Abstract

Blue emission from orthorhombic InOOH nanowires was increased dramatically by 30-fold after doping with 1 mol% Eu. This was attributed to the reduction of Eu(III) to Eu(II), which was localized on the surface and created defects. On the other hand, a larger amount of Eu-doping did not result in strong blue emission. Corundum-type rhombohedral and cubic In2O3 were obtained by post-thermal annealing of the nanowires at 400 and 700 °C, respectively. Interestingly, rhombohedral In2O3 remained stable after doping with 10 mol% Eu even upon high temperature thermal annealing at 700 °C. The morphology was changed significantly for the undoped and 1 mol% doped samples, whereas the 10 mol% doped sample showed resistance to morphological changes upon annealing at 700 °C.

Graphical abstract: Crystal phase transformation and doping-induced blue emission of Eu-doped InOOH and cubic/corundum-type rhombohedral In2O3 nanowires

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Publication details

The article was received on 20 Oct 2014, accepted on 06 Dec 2014 and first published on 09 Dec 2014


Article type: Paper
DOI: 10.1039/C4CE02111H
CrystEngComm, 2015,17, 1189-1200

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    Crystal phase transformation and doping-induced blue emission of Eu-doped InOOH and cubic/corundum-type rhombohedral In2O3 nanowires

    W. J. Kim, B. Min, D. Pradhan and Y. Sohn, CrystEngComm, 2015, 17, 1189
    DOI: 10.1039/C4CE02111H

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