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《Chinese Journal of Luminescence》 2001-03
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VUV Spectra Characteristics of Eu~(3+)-activated Ln_7O_6(BO_3)(PO_4)_2 (Ln=La,Gd,Y)

CHU Ben li 1, LIU Xing ren 1, WANG Xiao jun 1, JIN Wei hua 1, TAO Ye 2, WANG Wei 2, HOU Xue ying 2 (1 Laboratory of Excited State Processes, Chinese Academy of Sciences; Changchun Institute of Optics, Fine Mechanics and Physics, Ch  
Eu 3+ doped materials has made an important role in the PDP, but the color purity and fluorescent efficiency of the materials now available can not be satisfactory. To look for better materials, the fluorescent properties of Ln 7O 6(BO 3)(PO 4) 2∶Eu( Ln =La,Gd,Y) have been studied. The samples were synthesized by high temperature solid phase technique. The structures of the samples were complicated, it was showed by the infrared absorption spectra that the basic structure unit are 3- and 3- , but because there are interaction between of 3- and 3- , the radius of Eu 3+ ions is different from the La 3+ , Gd 3+ , Y 3+ ions, and there exists other anion group, etc., the absorption spectra of Ln 7O 6(BO 3)(PO 4) 2∶Eu are not entirely the same as that of Ln BO 3 and Ln PO 4 doped with Eu. The excitation spectra in the region of VUV UV and the emission spectra in the visible region were studied. The excitation spectra are consisted of the Eu 3+ O 2 charge transfer band and the host absorption band. The location of the Eu 3+ O 2 charge transfer band shifted to the high energy with the radius of the La 3+ , Gd 3+ , Y 3+ decreasing; in the excitation spectra of the Gd 7O 6(BO 3)(PO 4) 2∶Eu and Y 7O 6(BO 3)(PO 4) 2∶Eu , the ratio between the absorption in the VUV region and in the Eu 3+ O 2 charge transfer band is higher than that in the La 7O 6(BO 3)(PO 4) 2∶Eu; there is high absorption at 147nm in the Y 7O 6(BO 3)(PO 4) 2∶Eu. When excited into the host, the excitation energy was absorbed by the host then transferred to the Eu 3+ ions, so the red emission of Eu 3+ was obtained. In the emission spectrum of Gd 7O 6(BO 3)(PO 4) 2∶ Eu, 5D 0 → 7F 1 transition is strong, so this material is not fit to be applied to the PDP. In the emission spectrum of Y 7O 6(BO 3)(PO 4) 2∶Eu , the 5D 0 → 7F 3 transition is stronger than that in the Gd 7O 6(BO 3)(PO 4) 2∶Eu and La 7O 6(BO 3)(PO 4) 2∶Eu, and in the VUV region, Y 7O 6(BO 3)(PO 4) 2∶Eu has good absorption also, so Y 7O 6(BO 3)(PO 4) 2∶Eu has practical application value.
【Fund】: 国家科委“86 3”资助项目 (ZJ0 0X14T)
【CateGory Index】: O482.31;O433
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【References】
Chinese Journal Full-text Database 1 Hits
1 ZHU Xian-zhong1,HUANG Chang-qing2,LIU Hong-wei1,HAN Yong-yong1,ZHANG Bin1(1.Department of Micro-electronics,Nanjing College of Information Technology,Nanjing 210046;2.College of Optical and Electronic Technology of China Jilang University,Hangzhou 310038);Effects of Gd~(3+) on luminescent properties of(Y,Gd)BO_3:Eu~(3+)[J];Journal of Functional Materials and Devices;2009-06
【Co-references】
Chinese Journal Full-text Database 4 Hits
1 ZHENG A-qun~(1,2), SONG Xiao-ping~1, XI Ying-xin~1, LIU Hong-bin~(1, 2)(1. School of Science, Xi'an Jiaotong University, Xi'an 710049, China;2. IRICO Group Corporation, Xianyang 712021, China);Synthesis of (Y,Gd)BO_3∶Eu with Identical Spherical Morphology for PDP[J];Chinese Journal of Luminescence;2005-01
2 WANG Lie-Song, LIN Jun*, ZHOU Yong-Hui (Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China);Synthesis of Spherical YBO_3∶Eu Phosphors by Spray Pyrolysis Method[J];Chemical Research In Chinese Universities;2004-01
3 HE Ling, WANG Yu-Hua 1,2* (1. Department of Materials Science, Lanzhou University, Lanzhou 730000, China; 2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China);Synthesis and Control of the Morphology of YBO 3∶Eu Phosphor by Hydrothermal Method[J];Chemical Research In Chinese Universities;2004-09
4 FENG Hua-jun~(1,2),CHEN Yuan~(1,2),TANG Fang-qiong~1,REN Jun~1,ZHANG Lin~1(1.Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100080,P.R.China;2.Graduate School of the Chinese Academy of Sciences,Beijing 100039,P.R.China);Preparation and Luminescence Property of Monodisperse Gd_xY_(2-x)O_3:Eu~(3+) Nanospheres[J];Photographic Science and Photochemistry;2006-03
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