Ca_2BO_3Cl:Ce^(3+),Tb^(3+):A novel tunable emitting phosphor for white light-emitting diode  

作　　者：李盼来 王永生 赵谡玲 张福俊 徐征 

机构地区：[1]Key Laboratory of Luminescence and Optical Information,Ministry of Education,Beijing Jiaotong University [2]Institute of Optoelectronics Technology,Beijing Jiaotong University [3]College of Physics Science&Technology,Hebei University

出　　处：《Chinese Physics B》2012年第12期471-476,共6页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2010CB327704);the National Natural Science Foundation for Distinguished Young Scholars of China(Grant No.60825407);the New Century Excellent Talents in University (Grant No.NCET-10-0220);the National Natural Science Foundation of China(Grant Nos.10974013,60978060,10804006,and 50902042);the Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20090009110027);Beijing Municipal Natural Science Foundation,China(Grant No.1102028);the Beijing Municipal Science & Technology Commission, China(Grant No.Z090803044009001);the Natural Science Foundation of Hebei Province,China(Grant No.E2010000283);the Fund from the Key Laboratory of Luminescence and Optical Information,Beijing Jiaotong University,Ministry of Education, China(Grant No.2010LOI12);the Excellent Doctor's Science and Technology Innovation Foundation of Beijing Jiaotong University(Grant No.2011YJS073)

摘　　要：Ca2BO3Cl：Ce3＋, Ca2BO3Cl：Tb3＋, and Ca2BO3Cl：Ce3＋, Tb3＋ phosphors are synthesized by a high temperature solid-state reaction. The emission intensity of Ce3＋ or Tb3＋ in Ca2BO3Cl is influenced by the Ce3＋ or Tb3＋ doping content, and the optimum concentrations of Ce3＋ and Tb3＋ are 0.03 tool and 0.05 mol, respectively. The concentration quenching effect of Ce3＋ or Tb3＋ in Ca2BO3Cl occurs, and the concentration quenching mechanism is d-d interaction for either Ce3＋ or Tb3＋. The Ca21303Cl：Ce3＋, Tb3＋ can produce colour emission from blue to green by properly tuning the relative ratio between Ce3＋ and Tb3＋, and the emission intensity of Tb3＋ in Ca2BO3Cl can be enhanced by the energy transfer from Ce3＋ to Tb3＋. The results indicate that Ca2BO3Cl：Ce3＋, Tb3＋ may be a promising double emission phosphor for UV-based white light emitting diodes.Ca2BO3Cl：Ce3＋, Ca2BO3Cl：Tb3＋, and Ca2BO3Cl：Ce3＋, Tb3＋ phosphors are synthesized by a high temperature solid-state reaction. The emission intensity of Ce3＋ or Tb3＋ in Ca2BO3Cl is influenced by the Ce3＋ or Tb3＋ doping content, and the optimum concentrations of Ce3＋ and Tb3＋ are 0.03 tool and 0.05 mol, respectively. The concentration quenching effect of Ce3＋ or Tb3＋ in Ca2BO3Cl occurs, and the concentration quenching mechanism is d-d interaction for either Ce3＋ or Tb3＋. The Ca21303Cl：Ce3＋, Tb3＋ can produce colour emission from blue to green by properly tuning the relative ratio between Ce3＋ and Tb3＋, and the emission intensity of Tb3＋ in Ca2BO3Cl can be enhanced by the energy transfer from Ce3＋ to Tb3＋. The results indicate that Ca2BO3Cl：Ce3＋, Tb3＋ may be a promising double emission phosphor for UV-based white light emitting diodes.

关 键 词：LUMINESCENCE PHOSPHOR Ca2BO3Cl：Ce3＋ Tb3＋ energy transfer 

分 类 号：TN312.8[电子电信—物理电子学]