光电子快报(英文版), 2014, 10 (4): 262, Published Online: Oct. 12, 2017
White light emission from Dy3+-doped LiLuF4single crystal grown by Bridgman method
Abstract
Lithium lutetium fluoride (LiLuF4) single crystals doped with different Dy3+ion concentrations were grown by Bridgman method. The Judd-Ofelt (J-O) strength parameters (Ω2, Ω4, Ω6) of Dy3+in LiLuF4crystal are calculated according to the measured absorption spectra and the J-O theory, by which the asymmetry of the Dy3+:LiLuF4single crystal and the possibility of attaining stimulated emission from 4F9/2level are analyzed. The capability of the Dy3+:LiLuF4crystal in generating white light by simultaneous blue and yellow emissions under excitation with ultraviolet light is produced. The effects of excitation wavelength and doping concentration on chromaticity coordinates and photoluminescence intensity are also investigated. Favorable CIE coordinates, x=0.319 3 and y=0.349 3, can be obtained for Dy3+ion in 2.701% molar doping concentration under excitation of 350 nm.
DONG Yan-ming, XIA Hai-ping, FU Li, LI Shan-shan, GU Xue-mei, ZHANG Jian-li, WANG Dong-jie, ZHANG Yue-pin, JIANG Hao-chuan, CHEN Bao-jiu. White light emission from Dy3+-doped LiLuF4single crystal grown by Bridgman method[J]. 光电子快报(英文版), 2014, 10(4): 262.