【作者】 王艳玲； 戴世勋； 徐铁峰； 聂秋华； 沈祥； 王训四；

【Author】 Wang Yanling~* Dai Shixun~+ Shen Xiang Wang Xunsi Xu Tiefeng Nie Qiuhua (College of Information Science and Engineering,Ningbo University,Ningbo 315211,China)

【机构】 宁波大学信息科学与工程学院；

【摘要】 实验室制备了TeO₂-TiO₂-Bi₂O₃系统玻璃的五块玻璃样品,并研究了其吸收边,折射率,金属标准值M,直接光学带隙,间接光学带隙及Urbach能量。对实验结果进行了讨论分析,由于TiO₂和Bi₂O₃具有高的极化率,高的光学碱度,这种玻璃展现了较高的折射率;折射率随TiO₂和Bi₂O₃的加入而增大,光学带隙有减小的趋势。更多还原

【Abstract】 Five samples were prepared in the TeO₂-TiO₂-Bi₂O system.The optical absorption of the ternary TeO₂-TiO₂-Bi₂O glasses was investigated.Their linear refractive indices were also measured.The optical band gap(E_opt)and Urbach energy（△E）were determined from the optical absorption spectra.We discuss two evolutions of the linear refractive indices,the ternary glasses containing TiO₂ and Bi₂O₃ show high refractive indices,because of their large polarizability,high optical basicity;this is associated with the optical band gap.更多还原