PbO对Tm^(3+)/Ho^(3+)/Yb^(3+)共掺碲酸盐玻璃三基色上转换发光的影响  

Influence of PbO on three fundamental color upconversion luminescence of Tm^(3+)/Ho^(3+)/Yb^(3+)codoped tellurite glasses

作　　者：王大刚[1] 周亚训[1] 戴世勋[1] 王训四[1] 沈祥[1] 陈飞飞[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：《功能材料》2010年第A03期536-539,共4页Journal of Functional Materials

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);宁波大学研究生创新基金资助项目(G10JA002);宁波大学学生SRIP项目;宁波大学王宽诚幸福基金项目

摘　　要：用高温熔融法制备了Tm3+/Ho3+/Yb3+共掺碲酸盐玻璃,在TeO2-ZnO-La2O3玻璃组分的基础上,引入声子能量较低的PbO,研究了PbO对基质样品拉曼光谱以及Tm3+/Ho3+/Yb3+共掺样品上转换发光光谱的影响。结果表明,随着PbO含量的增加,样品的最大声子能量下降比较明显,同时样品的声子态密度也有减小趋势;在975nm波长激光二极管(LD)激励下,随着PbO含量的增加,Tm3+/Ho3+/Yb3+共掺样品上转换蓝光(480nm)、绿光(546nm)和红光(662nm)的发光强度都有明显增强,且PbO的引入对上转换蓝光发光强度的影响要大于其对绿光和红光的影响。Tm3＋/Ho3＋/Yb3＋codoped tellurite glasses were prepared by conventional melt-quenching method. The heavy metal oxide PbO with lower phonon energy was introduced into the tellurite glass with a composition of TeO2-ZnO-La2O3. The effect of PbO content on the Raman spectra of the matrixes and the upconversion luminescence spectra of the Tm3＋/Ho3＋/Yb3＋codoped samples were studied. The results show that, with the increase of PbO content, the phonon energy of host glass decreased, and the phonon density also have decrescence tendency. The intensity of upconversion blue（480nm）, green（546nm） and red（662nm） of the Tm3＋/Ho3＋/Yb3＋codoped glasses were significantly enhanced at room temperature under 975nm LD excitation and the blue luminescence intensity of the impact is greater than the impact on the green and red.

关 键 词：碲酸盐玻璃 上转换发光 Tm3+/Ho3+/Yb3+共掺 

分 类 号：O482.31[理学—固体物理]