摘要
用传统的熔融淬冷法制备了远红外Te基硫系玻璃(Ge15Ga10Te75)100-x(KBr)x(x=2、4、6、8mol%).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.
A series of （Ge15 Ga10 Te75 ）100-x （KBr）x （x = 2, 4, 6, 8 mol%） far infrared transmitting chalcogenide glasses was prepared by the traditional melt-quenching method. Some instruments of X-ray 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 Ge-Ga-Te glasses on glass forming, net structure and thermal stability, UV-Vis 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 red-shift appears in the absorbing cut-off edge of short-wave in the glasses, cut-off edge of long-wave 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.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2014年第6期47-51,共5页
Acta Photonica Sinica
基金
国家自然科学基金(Nos.61377099
61177087)
宁波市自然科学基金(No.2013A610118)
教育部新世纪优秀人才(No.NCET-10-0976)
浙江省151人才第三层次
宁波大学王宽诚幸福基金
宁波大学优秀学位论文培育基金(No.PY2012015)资助
关键词
硫系玻璃
光谱性质
光学带隙
红外透过
Chalcogenide glasses
Optical properties
Optical band gaps
Infrared transmission
