Glass Formation and Optical Band Gap Studies on Bi_2O_3-B_2O_3-BaO Ternary System  

作　　者：陈飞飞 戴世勋 

机构地区：[1]College of Information Science and Engineering,Ningbo University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2009年第5期716-720,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China (No.60677015);the Tackling Key Project of Science and Technology Department of Zhejiang Province (No. 2007C21122);the Natural Science Foundation of Ningbo (No. 2006A610020);sponsored by K C Wong Magna Fund in NingBo University

摘　　要：The glass forming region of Bi2O3-B2O3-BaO ternary system was investigated. A serial of glass samples with high Bi2O3 content in Bi2O3-B2O3-BaO system were prepared by using conventional melting and quenching meld, and the refractive indexes and absorption spectra of samples were measured. It is found that the refractive index of samples as well as the UV absorption increase with the increase of BaO content. According to the Tauc law, optical band gap Eopg which is assumed to be the effective energy band gap Eg is calculated and decreases with the increasing BaO content, and the ratio of Eg/Eopg is 1.3.The glass forming region of Bi2O3-B2O3-BaO ternary system was investigated. A serial of glass samples with high Bi2O3 content in Bi2O3-B2O3-BaO system were prepared by using conventional melting and quenching meld, and the refractive indexes and absorption spectra of samples were measured. It is found that the refractive index of samples as well as the UV absorption increase with the increase of BaO content. According to the Tauc law, optical band gap Eopg which is assumed to be the effective energy band gap Eg is calculated and decreases with the increasing BaO content, and the ratio of Eg/Eopg is 1.3.

关 键 词：glass formation bismuth glass refractive index optical band gap 

分 类 号：TQ171.1[化学工程—玻璃工业]