Er^(3+)/Yb^(3+)共掺Bi_2O_3-GeO_2-Na_2O玻璃的上转换发光  

Upconversion Emission of Er^(3+)/Yb^(3+)-Codoped Bi_2O_3-GeO_2-Na_2O Glasses

作　　者：陆龙君[1] 聂秋华[1] 徐铁峰[1] 戴世勋[1] 沈祥[1] 

机构地区：[1]宁波大学信息科学与工程学院

出　　处：《中国激光》2006年第8期1117-1121,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(60207006);浙江省自然科学基金(601011);浙江省科技厅(2005C31014;2006C21082)资助项目

摘　　要：研究了不同Er3+/Yb3+掺杂比46Bi2O3-44GeO2-10Na2O(B46G44N10)(摩尔分数)玻璃的吸收光谱、红外吸收谱和上转换光谱性质,分析了玻璃中Yb3+敏化Er3+的上转换发光机制。测试了Er3+离子在不同Yb3+浓度下玻璃中的上转换荧光强度,得到最佳的掺杂质量比Er3+∶Yb3+=1∶6。计算了在980 nm激发下Er2O3质量分数为0.5%和Yb2O3质量分数为3.0%的Er3+/Yb3+共掺B46G44N10玻璃的绿光上转换效率为2.27×10-4。比较了不同基质材料玻璃的上转换效率,结果表明B46G44N10玻璃是一种良好的上转换基质材料。The absorption spectra, infrared （IR） absorption spectra and upconversion fluorescence spectra of a series of Er^3＋/Yb^3＋-codoped 46Bi2O3-44GeO2-10Na2O （B46G44N10） glasses were investigated, and upconversion luminescence mechanisms of Yb^3＋ sensitize Er^3＋ were analyzed. Upconversion fluorescence intensities of Yb^3＋ sensitize Er^3＋ were measured, the optimal doping ratio of Er^3＋ and Yb^3＋ was 1：6 for this glass, which resulted in the strongest upconversion fluorescence intensities. An upconversion efficiency of 2.27× 10^-4 was calculated for green emission from the B46G44N10 glass with 0.5 wt.-% Er2O3 , and 3.0 wt.-% Yb2O3 pumped by 980 nm. Results indicated that this kind of bismuth glasses might be potential materials for developing upconversion optical devices.

关 键 词：材料 发光机制 铋锗酸盐玻璃 上转换效率 

分 类 号：TQ171.735[化学工程—玻璃工业]