Structure and luminescence properties of Eu3+/Tb3+/MoO42- tri-doped calcium tungstate phosphors - Details

author：

Yang, Chenggang (Yang, Chenggang.) ^[1] | Huang, Qingming (Huang, Qingming.) ^[2] | Lin, Qinggui (Lin, Qinggui.) ^[3] | Yu, Han (Yu, Han.) ^[4] (Scholars：俞瀚) | Yu, Jianchang (Yu, Jianchang.) ^[5] (Scholars：俞建长)

Indexed by：

EI Scopus PKU CSCD

Abstract：

The　Ca0.75Mg0.2Tb0.02Eu0.03(WO4)1-x(MoO4)x　(x=0-1.0)　series　phosphors　were　synthesized　by　chemical　co-precipitation　method.　The　crystal　structure　and　photoluminescence　properties　of　the　phosphors　were　characterized.　The　results　show　that　the　Ca0.75Mg0.2Tb0.02Eu0.03(WO4)1-x(MoO4)x　phosphors　with　different　MoO42-　doped　amounts　belong　to　tetragonal　phase　solid.　The　luminous　intensity　of　the　phosphors　under　excitation　of　275　nm　firstly　increases　and　then　decreases　with　the　increase　of　MoO42-　doped　amount.　When　x=0.6,　the　luminous　intensity　of　phosphor　with　MoO42-　doping　is　6　times　greater　than　that　without　MoO42-　doping.　The　surrounding　environment　of　the　rare　earth　ions　and　the　symmetry　of　the　local　crystal　field　can　be　tuned　by　MoO42-　doping,　thus　improving　the　transfer　efficiency　of　the　O2-→Eu3+　electromigration　and　increasing　the　energy　transfer　efficiency　of　between　the　matrix　and　Tb3+　ions　and　Eu3+　ions.　©,　2015,　Chinese　Ceramic　Society.　All　right　reserved.

Keyword：

Calcium Coprecipitation Crystal symmetry Doping (additives) Energy transfer Metal ions Negative ions Phosphors Photoluminescence Rare earths Tungsten compounds

Community：

[ 1 ] [Yang, Chenggang]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 2 ] [Huang, Qingming]Instrumental Analysis & Measurement Center, Fuzhou University, Fuzhou; 350002, China
[ 3 ] [Lin, Qinggui]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Yu, Han]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 5 ] [Yu, Jianchang]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China