陕西科技大学学报（自然科学版）Issue(1)：49-52,4.
Bi2O3-B2O3-RE2O3（RE＝Ce，Tb）玻璃的光学带隙
Optical band gap of Bi2 O3-B2 O3-RE2 O3 (RE=Ce,Tb) glasses
摘要
Abstract
Bi2 O3-B2 O3-RE2 O3 (RE= Ce ,Tb) glasses were prepared by melting method .Ur-bach energy and optical band gap of different rare earth ions glasses were calculated by classi-cal Urbach formula and Tauc equation ,and explore the relationship of Urbach energy and op-tical band gap .The results showed that the amount of non-bridging oxygen bond increases with the increase of rare earth ions ,which loose structure of glass ,and cause the decrease of electron transition energy and Urbach energy .As the polarization rate of the glasses increa-ses ,which increased the absorption edge and decreased the bond strength and optical band gap;meanwhile the optical band gap decreased linearly with the decrease of Urbach energy .关键词
光学带隙/吸收边/发光玻璃Key words
optical band gap/absorption edge/luminescent glass分类
化学化工引用本文复制引用
殷海荣,刘盼,郭宏伟,董继先,吴阳,莫祖学..Bi2O3-B2O3-RE2O3（RE＝Ce，Tb）玻璃的光学带隙[J].陕西科技大学学报（自然科学版）,2014,(1):49-52,4.基金项目
国际科技合作计划项目（2009DFR50520）；陕西省咸阳市科技局科研计划项目（2012K11-14）；陕西科技大学博士科研启动基金项目 （）
