Correlating Structure with Threshold Behavior of Chalcogenide Glasses Within Ge-Sn-Se Ternary System

Beijing Qiao (1, 2) , Feifei Chen (1, 2) , Yicong Huang (1, 2) , Ruiqiang Lin (1, 2) , Xiaoyu Zhang (1, 2) , Shixun Dai (1, 2) , Xiang Shen (1, 2) , Qiuhua Nie (1, 2) , Xianghua Zhang (3)

1 Laboratory of Infrared Material and Devices
2 Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province
3 ISCR - Institut des Sciences Chimiques de Rennes

A systematic investigation of the optical and structural properties of chalcogenide glasses in Ge-Sn-Se ternary system is presented. We have found a threshold behavior of optical property, namely, existence of transitional composition of the Ge-Sn-Se glasses, with progressive replacement of Se by Sn. Calculation of mean coordination number indicates that the transition-like feature of optical property is associated with the evolution of chemical ordering of the Ge-Sn-Se network. Analysis of Raman spectra of the glasses explains that the interaction between Se-Se bonds, Sn(Se-1/2)(4) tetrahedra, and Sn-Sn homopolar bonds is the origination of such optical phenomenon.

Mots clés: chalcogenides; glasses; optical materials/properties

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Matériaux

Beijing Qiao, Feifei Chen, Yicong Huang, Ruiqiang Lin, Xiaoyu Zhang, et al.. Correlating Structure with Threshold Behavior of Chalcogenide Glasses Within Ge-Sn-Se Ternary System. Journal of the American Ceramic Society, 2017, 100 (1), pp.108-114. ⟨10.1111/jace.14477⟩. ⟨hal-01500401⟩