Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5441242 | Journal of Non-Crystalline Solids | 2017 | 8 Pages |
Abstract
A serial (100 â x)Ge25Sb10S65-xI (x = 0, 5, 10, 15, 20, 25 and 30 wt%) chalcohalide glasses and ones doped with 0.1 wt% Dy3 + rare-earth ions were synthesized and their structural, thermal and optical properties were systematically studied. It indicates that addition of I2 into Ge25Sb10S65 glass significantly decreases the connectivity of glass network and average bond energy, and modifies the associated properties. The glass transition temperature and refractive index decrease monotonically, and the density increases almost linearly with the increasing of iodine content in glass. The thermal stability is improved, which has a maximum of ÎTmax = 174 °C. While the optical bandgap has a peak value at x = 10 wt%. The absorption spectra and mid-infrared fluorescence spectra of Dy3 + rare-earth ions doped glasses were investigated together with the Judd-Ofelt analysis. GeS2 nano-crystals were found in the sample with x â¥Â 15 wt%, which is supposed to induce enhancements of mid-infrared fluorescence at 2.95 and 4.32 μm.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Quan Guo, Yantao Xu, Haitao Guo, Xusheng Xiao, Changgui Lin, Xiaoxia Cui, Pengfei Wang, Fei Gao, Min Lu, Bo Peng,