Effect of Ga on optical properties of novel Te-based far infrared transmitting chalcogenide glasses

被引：10
|
作者：
Nie Qiu-Hua [1 ]
Wang Guo-Xiang [1 ]
Wang Xun-Si [1 ]
Xu Tie-Feng [1 ]
Dai Shi-Xun [1 ]
Shen Xiang [1 ]
机构：
[1] Ningbo Univ, Coll Informat Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China
来源：
ACTA PHYSICA SINICA | 2010年 / 59卷 / 11期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
optical materials; chalcogenide glasses; optical band gap; infrared spectroscopy; CRYSTALLIZATION KINETICS;
D O I：
10.7498/aps.59.7949
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A series of (100 - x) (GeTe4) -xGa (x = 0, 5, 10 mol%) far infrared transmitting chalcogenide glasses is prepared by the traditional melt-quenching method. In this paper, the differential thermal analysis (DTA), visible/near-infrared absorption spectroscopy, infrared transmission spectra are adopted to analyze composition, structure and performance of the GeTe4 glass system with the addition of Ga. The results show that the Te-Ga bond is formed, which can reduce Te metallic character. When the content of Ga is 10 mol%, the glass is of the best thermal stability. With the addition of Ga, the transmission percentage is improved and infrared cut-off wavelength of the glasses extends beyond 20 mu m. Based on the metallization criterion and average bond energy, the relationship between optical band gap and composition is investigated.
引用
收藏
页码：7949 / 7955
页数：7
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