Combustion synthesis and luminescence properties of blue NaBaPO_4:Eu^(2+) phosphor  

作　　者：孙家跃 张翔燕 杜海燕 

机构地区：[1]School of Science,Beijing Technology and Business University

出　　处：《Journal of Rare Earths》2012年第2期118-122,共5页稀土学报（英文版）

基　　金：Project supported by National Natural Science Foundations of China (20876002, 20976002);Natural Science Foundation of Beijing (2091002);Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality

摘　　要：The blue-emitting phosphor NaBaPO4：Eu2＋ was prepared by the combustion method. The phase structure and microstructure of the as-prepared samples were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, respectively. Under the excita-tion wavelength of 360 nm, the emission spectrum exhibited only one blue band centering at 435 nm, which was ascribed to the 4f65d1→4f7 transition on Eu2＋ ions. Compared with the phosphor obtained by solid-state reaction method, the relative emission intensity of sample ob-tained by combustion method increased slightly. The decay times and the temperature dependence luminescence intensities （25-300 oC） were discussed in order to further investigate the potential applications. Furthermore, Eu2＋-doped NaBaPO4 phosphor showed higher thermally sta-ble luminescence comparable to commercially available Y3Al5O12：Ce3＋ （YAG：Ce3＋） phosphor. All the investigated suggestions that Na-BaPO4：Eu2＋ is a good phosphor candidate applied in white light emitting diode.The blue-emitting phosphor NaBaPO4：Eu2＋ was prepared by the combustion method. The phase structure and microstructure of the as-prepared samples were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, respectively. Under the excita-tion wavelength of 360 nm, the emission spectrum exhibited only one blue band centering at 435 nm, which was ascribed to the 4f65d1→4f7 transition on Eu2＋ ions. Compared with the phosphor obtained by solid-state reaction method, the relative emission intensity of sample ob-tained by combustion method increased slightly. The decay times and the temperature dependence luminescence intensities （25-300 oC） were discussed in order to further investigate the potential applications. Furthermore, Eu2＋-doped NaBaPO4 phosphor showed higher thermally sta-ble luminescence comparable to commercially available Y3Al5O12：Ce3＋ （YAG：Ce3＋） phosphor. All the investigated suggestions that Na-BaPO4：Eu2＋ is a good phosphor candidate applied in white light emitting diode.

关 键 词：Eu2＋ combustion method PHOTOLUMINESCENCE white LED rare earths 

分 类 号：O614.338[理学—无机化学]