期刊
JOURNAL OF LUMINESCENCE
卷 140, 期 -, 页码 30-37出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2013.02.031
关键词
Spherical Ga2O3 particles; Nitrogen doping; Photoluminescence; Red light emission
类别
资金
- National Natural Science Foundation of China [51202055, 21103056, 10974041]
- Natural Science Foundation of Hebei Province [E2012202040]
- Innovation Fund for Excellent Youth of Hebei University of Technology [2012001]
- Key Basic Research Program of Hebei Province of China [12965135D]
We report on the synthesis of single-crystalline spherical beta-Ga2O3 particles by a simple method in ambient atmosphere. No pre-treatment, catalyst, substrate, or gas flow was required during the synthesis process. The well-dispersed Ga2O3 particles display uniform spherical morphology with an average diameter of similar to 200 nm. Photoluminescence studies indicate that the Ga2O3 particles exhibit a broad blue-green light emission and an interesting red light emission at room temperature. The red light emission can be further tuned by post-annealing of the particles in ammonia atmosphere. The present single-crystalline beta-Ga2O3 particles with spherical morphology, uniform sub-micrometer sizes and tunable light emission are envisaged to be of high promise for applications in white-LED phosphors and optoelectronic devices. (c) 2013 Elsevier B.V. All rights reserved.
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