Effect of doping Gd^(3+) on crystal structure and luminescent properties of Sr_2SiO_4:Eu^(2+) phosphor  

作　　者：赵聪 朱达川 高唯 韩涛 彭玲玲 涂铭旌 

机构地区：[1]College of Materials Science and Engineering, Sichuan University [2]Department of Chemical & Materials Engineering, The University of Auckland [3]Research Center for Material Interdisciplinary Science, Chongqing University of Arts and Science,Chongqing Engineering Research Center for Optoelectronic Materials and Devices

出　　处：《Journal of Rare Earths》2015年第7期693-699,共7页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(51302330);Open Project Foundation of Chongqing Key Laboratory of Micro/Nano Materials Engineering and Technology(KFJJ1302)

摘　　要：Sr1.995-1.5xGdxSiO4：0.005Eu^2＋ phosphor series with x=0-0.08 mol for near-ultraviolet white light-emitting diodes （NUV w-LEDs） were synthesized via solid-state reaction method. XRD profile pattern and refinement results demonstrated that doping Gd^3＋ ions resulted in the phase transformation （β-Sr2SiO4→α＇-Sr2SiO4）. The photoluminescenee spectrum of the sample with x=0 tool displayed two emission peaks centered at 470 and 525 nm. The two-peak spectra became one-peak spectra with the Gd^3＋ concentration increasing. Actually, the fitting results demonstrated that the one-peak spectra were still composed of two single emission spectra. The photoluminescence intensity was improved and the CIE chromaticity coordinates were adjusted via doping Gd^3＋.Sr1.995-1.5xGdxSiO4：0.005Eu^2＋ phosphor series with x=0-0.08 mol for near-ultraviolet white light-emitting diodes （NUV w-LEDs） were synthesized via solid-state reaction method. XRD profile pattern and refinement results demonstrated that doping Gd^3＋ ions resulted in the phase transformation （β-Sr2SiO4→α＇-Sr2SiO4）. The photoluminescenee spectrum of the sample with x=0 tool displayed two emission peaks centered at 470 and 525 nm. The two-peak spectra became one-peak spectra with the Gd^3＋ concentration increasing. Actually, the fitting results demonstrated that the one-peak spectra were still composed of two single emission spectra. The photoluminescence intensity was improved and the CIE chromaticity coordinates were adjusted via doping Gd^3＋.

关 键 词：DOPING solid-state reaction PHOTOLUMINESCENCE SR2SIO4 PHOSPHORS rare earths 

分 类 号：TN312.8[电子电信—物理电子学] TQ422[化学工程]