光子学报, 2014, 43 (6): 0616001, 网络出版: 2014-08-18
新型远红外Ge-Ga-Te-KBr硫系玻璃性能研究
Novel Ge-Ga-Te-KBr Far InfraredTransmitting Chalcogenide Glasses System
摘要
用传统的熔融淬冷法制备了远红外Te基硫系玻璃(Ge15Ga10Te75)100x(KBr)x(x=2、4、6、8 mol%).利用X射线衍射仪、差示扫描量热仪等设备测试玻璃的结构和物化性质,分析了引入KBr对Te玻璃的结构、化学和物理热稳定性等方面的影响;利用分光光度计、红外光谱仪等光学方法研究了该类Te玻璃的光谱性质,分析了KBr对该类玻璃的短波吸收和红外透过光谱的影响;利用Tauc方程估算了玻璃样品直接和间接的光学带隙.实验结果表明:随着KBr含量的增加,玻璃的短波截止边发生红移,而红外截止边基本没有发生变化,该组玻璃始终保持较宽的红外透过范围.
Abstract
A series of (Ge15Ga10Te75)100x(KBr)x (x=2, 4, 6, 8 mol%) far infrared transmitting chalcogenide glasses was prepared by the traditional meltquenching method. Some instruments of Xray diffraction, differential scanning calorimeter were adopted to test the structure and physicochemical properties of the glasses. At the same time, the effects of KBr to GeGaTe glasses on glass forming, net structure and thermal stability, UVVis absorption and FTIR spectrometer were adopted to study the optical properties of the glasses with the dopant of KBr. The Tauc equation was adopted to calculate the direct and indirect optical band gaps of the bulk glasses. The results show that a redshift appears in the absorbing cutoff edge of shortwave in the glasses, cutoff edge of longwave IR just keeps the same regardless of the increase of KBr content. The group of glasses can keep the superiorities of stable and wide infrared transmission.
朱敏鸣, 王训四, 徐会娟, 聂秋华, 姜晨, 张培全, 戴世勋, 沈祥, 徐铁峰, Xianghua Zhang. 新型远红外Ge-Ga-Te-KBr硫系玻璃性能研究[J]. 光子学报, 2014, 43(6): 0616001. ZHU Minming, WANG Xunsi, XU Huijuan, NIE Qiuhua, JIANG Chen, ZHANG Peiquan, DAI Shixun, SHEN Xiang, XU Tiefeng, XianghuaZhang. Novel Ge-Ga-Te-KBr Far InfraredTransmitting Chalcogenide Glasses System[J]. ACTA PHOTONICA SINICA, 2014, 43(6): 0616001.