首页 | 本学科首页   官方微博 | 高级检索  
     

VUV spectroscopic properties of rare-earth(RE=Eu,Tb and Dy)-doped A2Zr(PO4)2(A=Li,Na and K) phosphates
引用本文:林啸,冯昂,张志军,赵景泰.VUV spectroscopic properties of rare-earth(RE=Eu,Tb and Dy)-doped A2Zr(PO4)2(A=Li,Na and K) phosphates[J].中国稀土学报(英文版),2014,32(10):946-951.
作者姓名:林啸  冯昂  张志军  赵景泰
作者单位:[1]Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China; [2]Graduate University of Chinese Academy of Sciences,Beijing 100039,China; [3]School of Materials Science and Engi- neering,Shanghai University,Shanghai 200072,China
基金项目:supported by National Natural Science Foundation of China(11104298,5033250,U1332202);Innovation Program of Shanghai Institute of Ceramics(Y34ZC130G)
摘    要:This study fully investigated the vacuum ultraviolet excitation spectra of pure and rare-earth(RE=Eu, Tb and Dy)-doped A2Zr(PO4)2(A=Li, Na and K) phosphors. The synthesized Na and Li compounds were characterized by XRD showing two new types of phases after indexation. Although these three pure compounds had different crystal structures, they exhibited similar luminescence properties. For Eu3+-activated samples, the broad excitation band centered at 217 nm could be attributed to the CT transition between O2–(2p6) and Eu3+ ions. For Tb3+-doped samples, two groups of f-d transitions were observed, where a strong broad band at 221 nm was due to the spin-allowed f-d transition. Energy transfer from O2– to Dy3+was not observed in Dy3+-doped phosphors, probably because it overlapped considerably with the CT transition from O2– to Zr4+ at 187 nm.

关 键 词:铽掺杂  铕激活  光谱特性  RE  稀土  Na  VUV  磷酸盐
收稿时间:19 February 2014

VUV spectroscopic properties of rare-earth(RE=Eu,Tb and Dy)-doped A_2Zr(PO_4)_2(A=Li,Na and K) phosphates
Abstract:This study fully investigated the vacuum ultraviolet excitation spectra of pure and rare-earth (RE=Eu, Tb and Dy)-doped A2Zr(PO4)2 (A=Li, Na and K) phosphors. The synthesized Na and Li compounds were characterized by XRD showing two new types of phases after indexation. Although these three pure compounds had different crystal structures, they exhibited similar luminescence properties. For Eu3+-activated samples, the broad excitation band centered at 217 nm could be attributed to the CT transition between O2– (2p6) and Eu3+ ions. For Tb3+-doped samples, two groups of f-d transitions were observed, where a strong broad band at 221 nm was due to the spin-allowed f-d transition. Energy transfer from O2– to Dy3+ was not observed in Dy3+-doped phosphors, probably because it overlapped considerably with the CT transition from O2– to Zr4+ at 187 nm.
Keywords:rare-earth  phosphates  optical materials  luminescence  VUV spectra
本文献已被 CNKI 维普 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号