Photoluminescence and energy transfer of YAG:Ce^(3+),Gd^(3+),Bi^(3+)

作     者：Meidan Que Wenxiu Que Ting Zhou Jinyou Shao Lingbing Kong 

作者机构：Electronic Materials Research Laboratory International Center for Dielectric Research Key Laboratory of the Ministry of Education School of Electronic&Information Engineering State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an 710049ShaanxiPeople's Republic of China School of Materials Science and Engineering Nanyang Technological University Nanyang AvenueSingapore 639798Singapore 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2016年第6卷第4期

页      面：31-36页

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 

主　　题：YAG:Ce^(3+),Gd^(3+),Bi^(3+)phosphor energy transfer reabsorption. 

摘      要：In this study,Gd^(3+)and Bi^(3+)ions act to redshift the emission band to orange region,and to enhance significantly the maximum emission of YAG:Ce^(3+).On account that size mismatch between the host and the doped Gd^(3+)ion,the crystal structure turns soft,and the emission spectra are not tuned from 540 to 570 nm but decreased the emission ***,an effective way to increase emission intensity is to introduce Bi^(3+)ion into the YAG:Ce^(3+),Gd^(3+)*** results show partial overlapping between the emission band of Bi^(3+)ion and the excitation band of Ce^(3+)ion,indicating that the energy transfer from Bi^(3+)to Ce^(3+)ions exists in the(Y_(1.94)Ce_(0.06)Gd)Al_(5)O_(12):Bi^(3+)***^(3+)ion can serve as the activator to provide energy for Ce^(3+)ion via cross relaxation ***,the(Y_(1.94)Ce_(0.06)Gd)Al_(5)O_(12):Bi^(3+)phosphor could have potential applications in warm white LEDs.