应用于白光显示的碲酸盐玻璃上转换发光特性  

Upconversion luminescence properties of tellurite glasses applied for white light emission

作　　者：王大刚[1] 周亚训[1] 王训四[1] 戴世勋[1] 沈祥[1] 王国祥[1] 王森[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《光电子．激光》2010年第10期1473-1476,共4页Journal of Optoelectronics·Laser

基　　金：浙江省自然科学基金资助项目(Y107070);宁波市自然科学基金资助项目(2010A610172);宁波大学学生SRIP资助项目;宁波大学研究生创新基金项目(G10JA002);宁波大学王宽诚幸福基金资助项目

摘　　要：用高温熔融法制备了Tm3+/Er3+/Yb3+共掺碲酸盐玻璃(TeO2-ZnO-La2O3)样品,测试了玻璃样品的吸收光谱和上转换发光光谱,分析了上转换发光机理。结果发现:在975 nm,波长激光二极管(LD)激励下,制备的碲酸盐玻璃样品可以观察到强烈的红光(662 nm)、绿光(525、546 nm)和蓝光(475 nm)三基色上转换发光,分别对应于Er3+的4F9/2→4I15/2,2H11/2→4I15/2、4S3/2→4I15/2和Tm3+的1G4→3H6能级跃迁;随着Yb3+掺杂含量和泵浦功率的增加,样品的上转换发光强度都得到了一定程度的提高;通过调整稀土掺杂的浓度,得到了接近于标准白光(EE)发射。Tm^3＋/Er^3＋/Yb^3＋ codoped tellurite glasses（TeO2-ZnO-La2O3） are prepared by conventional melt-quenching method.The absorption spectra and upconversion luminescence spectra of the glasses are measured,and the upconversion luminescence mechanisms are analyzed.The results show that the intense red（662 nm）,green（525 nm,546 nm） and blue（475 nm） upconversion emissions of the prepared tellurite glasses are simultaneously observed at room temperature under 975 nm laser diode（LD） excitation.Upconversion red and green emissions are due to the energy transitions of Er3＋ ion：^4F9/2→^4I15/2,2H11/2→^4I15/2 and ^4S3/2→^4I15/2 respectively,while upconversion blue emission is because of Tm^3＋ ion energy transition：1G4→3H6.With the increasing of Yb^3＋ content and the pump power,the upconversion luminescence performance is also enhanced.The white light close to the standard white light emission can be obtained by adjusting the doping concentration of rare earth.

关 键 词：碲酸盐玻璃 上转换发光 白光 TM^3+ ER^3+ YB^3+ 

分 类 号：TQ171.1[化学工程—玻璃工业]