Hydrothermal synthesis and luminescent properties of BaMoO4:Sm3+ red phosphor
来源期刊：JOURNAL OF RARE EARTHS2016年第2期
论文作者：李兆 王永锋 曹静 江元汝 赵西成 孟志新
文章页码：143 - 147
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 environmental 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 for x=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 increasing Li+ doping concentration, and then decreased. The optimal content of Li+ was about 2%. The BaMoO4:Sm3+ phosphor prepared in this study could act as superior red phosphor for white LEDs.
李兆1，王永锋1，曹静1，江元汝2，赵西成3，孟志新1
1. School of Materials Engineering, Xi’an Aeronautical University2. School of Science, Xi’an University of Architecture and Technology3. College of Metallurgical Engineering, Xi’an University of Architecture and Technology
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 environmental 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 for x=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 increasing Li+ doping concentration, and then decreased. The optimal content of Li+ was about 2%. The BaMoO4:Sm3+ phosphor prepared in this study could act as superior red phosphor for white LEDs.
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