White light emission of Eu^(3+)/Ag co-doped Y_2Si_2O_7  

作　　者：邓宇航 宋文申 董伟乐 代如成 王中平 张增明 丁泽军 

机构地区：[1]Hefei National Laboratory for Physical Sciences at Microscale [2]Department of Physics University of Science and Technology of China [3]The Center of Physical Experiments University of Science and Technology of China

出　　处：《Journal of Rare Earths》2014年第9期779-786,共8页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(11074232,11274288,21002097,11304300);the National Basic Research Program of China(2011CB932801,2012CB933702);Ministry of Education of China(20123402110034)

摘　　要：The Eu^3＋/Ag co-doped rare earth disilicate Y2Si2O7 microcrystal was synthesized by sol-gel method. Through controlling the thermal treatment process of YzSi2OT：EU3＋/Ag precursor, various phases （amorphous, α, β, γ, δ） were prepared. White light emis- sion was observed under UV light excitation in the samples heavily doped with Ag. The white light was realized by combining the intense red emission of Eu3＋, the green emission attributed to the very small molecule-like, non-plasmonic Ag particles （ML-Ag-particles）, and the blue emission due to Ag ions. Results demonstrated that Eu3＋/Ag co-doped Y2Si207 microcrystal could be potentially applied as white light emission phosphors for UV LED chips.The Eu^3＋/Ag co-doped rare earth disilicate Y2Si2O7 microcrystal was synthesized by sol-gel method. Through controlling the thermal treatment process of YzSi2OT：EU3＋/Ag precursor, various phases （amorphous, α, β, γ, δ） were prepared. White light emis- sion was observed under UV light excitation in the samples heavily doped with Ag. The white light was realized by combining the intense red emission of Eu3＋, the green emission attributed to the very small molecule-like, non-plasmonic Ag particles （ML-Ag-particles）, and the blue emission due to Ag ions. Results demonstrated that Eu3＋/Ag co-doped Y2Si207 microcrystal could be potentially applied as white light emission phosphors for UV LED chips.

关 键 词：Y2Si2OT Eu^3＋ ion fluorescence ML-Ag-particle white light emission rare earths 

分 类 号：TQ422[化学工程]