文献类型：期刊文献

英文题名：Study of effects of Te addition and oxygen contamination on the surface short range order structure of Ge[sbnd]Bi[sbnd]Se glass by XPS

作者：Yin, Haiwei[1]; Liu, Yinyao[2]; Li, Lei[1]; Zheng, Jianhua[1]; Zeng, Huidan[1]; Chen, Guorong[1]

机构：[1] School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, CAS, Shanghai, 201800, China

年份：2017

卷号：712

起止页码：560

外文期刊名：Journal of Alloys and Compounds

收录：EI(收录号：20171603583343)

语种：英文

外文关键词：Germanium compounds - Glass - Oxygen - Bismuth compounds - Photoelectrons - Tellurium - Selenium - Tellurium compounds - Photons

摘要：The short range order structure of Bi13Ge20Se67-xTex glasses (x=0, 5, 10, 15, 20at.%) is explored by using high-resolution X-ray photoelectron spectroscopy. Results show that the incorporated oxygen from surface containment of specimens and Te substitution for Se exert important impacts on the network structure of glasses. Oxygen breaks the Ge[sbnd]Ge homopolar bonds in the Ge[sbnd]Se[sbnd]Bi glass, leading to a significant reduction of the over-constrained Ge[sbnd]Ge[tbnd](Se)3 ethane-like units. Te addtion promotes the formation of mixed BiSe(Te)3/2 nanolayers as crystal precursors, thus initiating crystallinzation in competition to a topological self-organization process. The present work will be helpful to deepen the understanding of ChG glasses for applications in fields of optoelectronics and photonics. ? 2017 Elsevier B.V.