Bi_2O_3-B_2O_3-BaO玻璃的制备及其近红外发光性能的研究  

Preparation and near-infrared luminescence properties of Bi_2O_3-B_2O_3-BaO glasses

作　　者：刘军芳[1,2] 苏良碧[3] 徐军[3] 

机构地区：[1]同济大学材料科学与工程学院,上海200092 [2]同济大学,先进土木工程材料教育部重点实验室,上海200092 [3]中国科学院上海硅酸盐研究所,透明与光功能无机材料重点实验室,上海201800

出　　处：《物理学报》2013年第3期408-413,共6页Acta Physica Sinica

基　　金：国家自然科学基金青年科学基金(批准号:61008045);中央高校基本科研业务费专项资金资助~~

摘　　要：采用高温熔融法制备了xBi2O3-50B2O3-(50-x)BaO玻璃,测定了样品玻璃的近红外光区的发射谱、荧光寿命以及Raman光谱.在808nm波长光的激发下,50Bi2O3-50B2O3二元玻璃中未观察到近红外发光;随体系中BaO的加入,当x为40,45以及49时,玻璃样品中观察到了近红外宽带发光现象;BaO含量进一步增加,当x=10—30时,近红外发光现象消失;而当玻璃中Bi浓度很低时,在0.5Bi2O3-50B2O3-50BaO及1Bi2O3-50B2O3-50BaO玻璃中发现了近红外发光现象,且存在多个发光峰.对铋离子近红外发光机理进行了初步的探讨.xBi2O3-50B2O3-（50？x）BaO glasses are prepared by melting method. Their infrared luminescence spectra, fluorescence decay curves and Raman scattering spectra are measured. No obvious near-infrared （NIR） luminescence is observed in 50Bi2O3-50B2O3 glass under 808 nm laser diode （LD） pumping. Adding BaO, broadband NIR luminescences are observed in 40Bi2O3-50B2O3-10BaO glass, 45Bi2O3-50B2O3-5BaO glass and 49Bi2O3-50B2O3-1BaO glass. With the increase of BaO concentration, no obvious NIR luminescences are observed in 30Bi2O3-50B2O3-20BaO glass, 20Bi2O3-50B2O3-30BaO glass and 10Bi2O3-50B2O3-40BaO glass. The NIR emissions with several emission peaks appear in 0.5Bi2O3-50B2O3-50BaO glass and 1Bi2O3-50B2O3-50BaO glass. The mechanism for the emission is investigated preliminarily.

关 键 词：近红外发光 Bi离子 非桥氧 

分 类 号：O482.31[理学—固体物理]