Hydrothermal synthesis and luminescent properties of BaMoO_4:Sm^(3+) red phosphor

作     者：李兆 王永锋 曹静 江元汝 赵西成 孟志新 LI Zhao;WANG Yongfeng;CAO Jing;JIANG Yuanru;ZHAO Xicheng;MENG Zhixin

作者机构：School of Materials Engineering Xi’an Aeronautical University School of Science Xi’an University of Architecture and Technology College of Metallurgical Engineering Xi’an University of Architecture and Technology 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2016年第34卷第2期

页      面：143-147页

核心收录：

学科分类：081702[工学-化学工艺] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 0703[理学-化学] 0803[工学-光学工程] 

基　　金：supported by the National Natural Science Foundation of China(21205092,51474170) the National High-tech Research and Development Program of China(863 Program)(2011AA05A202) 

主　　题：photoluminescence BaMoO4:Sm3+ concentration quenching charge compensation rare earths 

摘      要：Trivalent samarium doped barium molybdate (BaMoO4:Sm3+) red phosphor was successfully synthesized by hydrothermal method. The crystal structure, morphology and photoluminescent property were characterized by X-ray diffraction, field environ-mental scanning electron microscopy and photoluminescence spectroscopy. The results indicated that the synthesized BaMoO4:Sm3+ phosphor consisted of a pure phase with an octahedral structure. The main excitation peaks were located at 362, 404, 445 and 477 nm, respectively, and were obviously observed. The main emission peaks were located at 533, 566, 602 and 646 nm, respectively. The phosphors exhibited a red performance at 646 nm, which was appropriate for the ultraviolet-light emitting diode (UV-LED) and blue LED. The luminescent intensity of BaMoO4:Sm3+ increased with an increase in the doping amount of Sm3+. The luminescent intensity had the optimal value forx=0.03. When the doping amount of Sm3+ was further increased, the concentration quenching phenomenon was observed. Monovalent lithium (Li+) cation was used as a charge compensator. The luminescence intensity first increased with in-creasing Li+ doping concentration, and then decreased. The optimal content of Li+ was about 2%. The BaMoO4:Sm3+ phosphor pre-pared in this study could act as superior red phosphor for white LEDs.