助熔剂法制备的LaMgAl_(11)O_(19)∶Eu^(n+)(n=2,3)的发光特性  

Photoluminescence of LaMgAl_(11)O_(19)∶Eu^(n+)(n=2,3) Phosphor Synthesized by Flux Method

作　　者：徐进章[1] 张志华[1] 王育华[1] 

机构地区：[1]兰州大学物理科学与技术学院功能与环境材料研究所,兰州730000

出　　处：《无机化学学报》2006年第5期913-916,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家科技部863计划(No.2003AA324020);国家自然基金(No.50272026);教育部优秀教师资助计划(No.2002年)资助项目

摘　　要：LaMgAl11O19∶Eun+ (n=2,3) was synthesized by solid state reaction using H3BO3 as a flux at 1 400 ℃ for 4 hours. And their luminescent properties was investigated under UV and VUV excitation. Strong pure blue emission due to d-f transition of Eu2+ was observed in LaMgAl11O19∶Eu2+ both in 254 nm and 147 nm excitation. At the same time, red emission due to 5D0 → 7FJ (J=0, 1, 2, 3, 4) transition of Eu3+ also observed in LaMgAl11O19∶Eu3+. The dependence of emission intensity of blue/red emission on Eu2+ / Eu3+-content was evaluated. The result indicated that the blue emission intensity was arrived optimum when Eu2+-content was 0.10 mol·mol-1 under both UV and VUV excitation while red emission intensity reached optimum when Eu3+-content was 0.125 mol·mol-1 under UV excitation. This suggests that LaMgAl11O19∶Eu2+ phosphors could be potential blue phosphor for the application in PDP.LaMgAl11O19：Eu^n＋（n=2,3） was synthesized by solid state reaction using H3BO3 as a flux at 1 400 ℃ for 4 hours. And their luminescent properties was investigated under UV and VUV excitation. Strong pure blue emission due to d-f transition of Eu^2＋ was observed in LaMgAl11O19：Eu^n＋ both in 254 nm and 147 nm excitation. At the same time, red emission due to ^5Do→^7FJ （J=0, 1, 2, 3, 4） transition of Eu^3＋ also observed in LaMgAIlIOIg：Eu^3＋. The dependence of emission intensity of blue/red emission on Eu^2＋ /Eu^3＋-content was evaluated. The result indicated that the blue emission intensity was arrived optimum when Eu^2＋-content was 0.10 mol·mol-I under both UV and VUV excitation while red emission intensity reached optimum when Eu^3＋-content was 0.125 mol·mol^-1 under UV excitation. This suggests that in PDP. LaMgAl11O19：Eu^n＋ phosphors could be potential blue phosphor for the application

关 键 词：助熔剂 UV/UVU LaMgAl11O19:Eu^n+(n=2 3) 荧光粉 

分 类 号：O614.31[理学—无机化学] O614.51[理学—化学]