In situ enhancement of the blue photoluminescence of colloidal Ga2O3 nanocrystals by promotion of defect formation in reducing conditions

Ting Wang; Pavle V. Radovanovic

doi:10.1039/C1CC11957E

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In situ enhancement of the blue photoluminescence of colloidal Ga₂O₃nanocrystals by promotion of defect formation in reducing conditions†

Ting Wang^a and Pavle V. Radovanovic*^a

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^a Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
E-mail: pavler@uwaterloo.ca
Fax: +1-519-746-0435
Tel: +1-519-888-4567 ext. 38144

Abstract

We demonstrate redox control of defect-based photoluminescence efficiency of colloidal γ-Ga₂O₃ nanocrystals. Reducing environment leads to an increase in photoluminescence intensity by enhancing the concentration of oxygen vacancies, while the blue emission is suppressed in oxidative conditions. These results enable optimization of nanocrystal properties by in situ defect manipulation.

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Article information

DOI: https://doi.org/10.1039/C1CC11957E
Article type: Communication
Submitted: 07 Apr 2011
Accepted: 06 May 2011
First published: 24 May 2011

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Chem. Commun., 2011,47, 7161-7163

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In situ enhancement of the blue photoluminescence of colloidal Ga₂O₃ nanocrystals by promotion of defect formation in reducing conditions

T. Wang and P. V. Radovanovic, Chem. Commun., 2011, 47, 7161 DOI: 10.1039/C1CC11957E

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