摘要
利用Raman光谱对GeS_2-Sb_2S_3-CdS体系硫系玻璃的结构进行研究。结果发现:其基本单元为具有准三维结构的[GeS_4]四面体和准二维结构的[SbS_3]三角锥;随着Sb_2S_3含量的增加,玻璃逐渐从准三维网络结构过渡到以[GeS_4]_m和[SbS_3]_n结构单元、Ge—S—Sb桥硫连接和Sb—Sb、Ge—Sb、Ge-Ge金属键连接的层状或链状结构;CdS提供非桥硫并降低网络聚合程度;由于Sb_2S_3和CdS的作用,玻璃中产生大量金属键和悬挂键,增加了玻璃中的结构缺陷。
The structure of GeS2-Sb2S3-CdS pseudo-ternary system glass was investigated by using Raman spectroscopy.The results show that the basic structure units forming the glass network are quasi-three-dimensional（3D）[GeS4]tetrahedra and quasi-two- dimensional（2D）[SbS3]pyramids.With the increase of Sb2S3 content,the structure of glass transfers from the 3D structure to the [GeS4]m,[SbS3]n formed layer or chain structure,which is interconnected by Ge-S-Sb bridging sulfurs and Sb-Sb,Ge-Sb,Ge-Ge metallic bonds.CdS can bring some non-bridge sulfurs and decrease the degree of polymerization.Because of the additions of Sb2S3 and CdS,large amount of metallic and dangling bonds are formed;therefore,the number of defects of glass is increased.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2010年第11期2110-2115,共6页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(60807034,10876009,60907039)
中国科学院“西部之光”人才培养计划“西部博士”
中国科学院“百人计划”资助项目
关键词
硫系玻璃
结构
RAMAN光谱
chalcogenide glass
structure
Raman spectroscopy
