Structural evolution study of additions of Sb2S3 and CdS into GeS2 chalcogenide glass by Raman spectroscopy
Structural evolution study of additions of Sb2S3 and CdS into GeS2 chalcogenide glass by Raman spectroscopy
复制标题
拉曼光谱研究GeS2硫系玻璃中添加Sb2S3和CdS的结构演化
DOI：
10.1088/1674-1056/26/10/104208
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发表时间：
2017
影响因子：
1.7
通讯作者：
Yang Zhi-Yong
中科院分区：
文献类型：
--
作者：
Guo Hai-Tao;Zhang Ming-Jie;Xu Yan-Tao;Xiao Xu-Sheng;Yang Zhi-Yong
用拉曼光谱系统地研究了GeS 2-Sb 2S 3、GeS 2-CdS、Sb 2S 3-CdS赝二元系和GeS 2-Sb 2S 3-CdS赝三元系的结构.结果表明，在GeS 2玻璃中同时存在少量的[S3 Ge-GeS 3]结构单元（SU）和-SS-/S8基团，并具有由交联的共角和共边[GeS 4]四面体组成的三维连续网络骨架.在GeS 2玻璃中加入Sb 2S 3后，网络骨架变为相互连接的[GeS 4]四面体和[SbS 3]棱锥.此外，[S3 Ge-GeS 3] SU中的Ge原子容易从Sb 2S 3中捕获S原子，形成[S2 Sb-SbS 2] SU.当CdS加入GeS 2玻璃中时，形成[Cd 4GeS 6]多面体，导致强烈的晶化倾向。此外，[S3 GeGeS 3] SU中的Ge原子容易从CdS中捕获S原子，导致Ge-Ge键的溶解。Sb 2S 3或CdS与GeS 2的共熔降低了熔体的粘度并改善了玻璃的均匀性。GeS 2玻璃只能溶解10mol%的CdS而不结晶。相比之下，GeS 2-Sb 2 S3玻璃可以溶解高达20摩尔%的CdS，这意味着Sb 2 S3可以延迟[Cd 4 GeS 6]多面体的构建并增加玻璃中CdS的溶解量。
The structures of pseudo-binary GeS 2–Sb 2 S 3, GeS 2–CdS, Sb 2 S 3–CdS, and pseudo-ternary GeS 2–Sb 2 S 3–CdS chalcogenide systems are systematically investigated by Raman spectroscopy. It is shown that a small number of [S 3 Ge–GeS 3] structural units (SUs) and-SS-/S 8 groups exist simultaneously in GeS 2 glass which has a three-dimensional continuous network backbone consisting of cross-linked corner-sharing and edge-sharing [GeS 4] tetrahedra. When Sb 2 S 3 is added into GeS 2 glass, the network backbone becomes interconnected [GeS 4] tetrahedra and [SbS 3] pyramids. Moreover, Ge atoms in [S 3 Ge–GeS 3] SUs tend to capture S atoms from Sb 2 S 3, leading to the formation of [S 2 Sb–SbS 2] SUs. When CdS is added into GeS 2 glass,[Cd 4 GeS 6] polyhedra are formed, resulting in a strong crystallization tendency. In addition, Ge atoms in [S 3 Ge–GeS 3] SUs tend to capture S atoms from CdS, resulting in the dissolution of Ge–Ge bond. Co-melting of Sb 2 S 3 or CdS with GeS 2 reduces the viscosity of the melt and improves the homogeneity of the glass. The GeS 2 glass can only dissolve up to 10-mol% CdS without crystallization. In comparison, GeS 2–Sb 2 S 3 glasses can dissolve up to 20-mol% CdS, implying that Sb 2 S 3 could delay the construction of [Cd 4 GeS 6] polyhedron and increase the dissolving amount of CdS in the glass.