V-doped MgAl6O10： novel luminescence substrate for phosphor-free UV-white LEDs

V-doped MgAl6O10： novel luminescence substrate for phosphor-free UV-white LEDs

V-doped MgAl6O10 is grown by the conventional Czochralski method. The crystal structure and the cell parameters are analyzed through X-ray diffraction experiments. The absorption and emission spectra are investigated. Under pumping at 324 nm, the emission spectra of V-doped MgAl6O10 obtain two emiss...

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Bibliographic Details
Published in:Chinese optics letters Vol. 10; no. 2; pp. 65 - 67
Main Author: 许鹏 夏长泰 吴峰 李星 赛青林 周国清 徐晓东
Format: Journal Article
Language:English
Published: 10-02-2012
Subjects:
X射线衍射实验
基板
掺杂
白光LED
白色发光二极管
紫外线
荧光粉
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Summary:V-doped MgAl6O10 is grown by the conventional Czochralski method. The crystal structure and the cell parameters are analyzed through X-ray diffraction experiments. The absorption and emission spectra are investigated. Under pumping at 324 nm, the emission spectra of V-doped MgAl6O10 obtain two emission peaks at the wavelengths of 471 and 570 nm. Two emission bands of the spectra combine to produce a spectrum that is perceived as white by the naked eye. Therefore, V-doped MgAl6O10 single crystal can be applied as substrate for phosphor-free ultraviolet （UV）-white light-emitting diodes （LEDs）.
Bibliography:31-1890/O3
Peng Xu, Changtai Xia , Feng Wu, Xing Li , Qinglin Sai, Guoqing Zhou, Xiaodong Xu（1Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences, Shanghai 201800, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China）
V-doped MgAl6O10 is grown by the conventional Czochralski method. The crystal structure and the cell parameters are analyzed through X-ray diffraction experiments. The absorption and emission spectra are investigated. Under pumping at 324 nm, the emission spectra of V-doped MgAl6O10 obtain two emission peaks at the wavelengths of 471 and 570 nm. Two emission bands of the spectra combine to produce a spectrum that is perceived as white by the naked eye. Therefore, V-doped MgAl6O10 single crystal can be applied as substrate for phosphor-free ultraviolet （UV）-white light-emitting diodes （LEDs）.
ISSN:1671-7694
DOI:10.3788/COL201210.021601