Forming glasses from Se and Te.

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Bruno BureauJacques Lucas

Abstract

Despite being close neighbors on the Periodic Table, selenium and tellurium present a totally different abilities to form glasses. Se is a very good glass former, and gives rise to numerous glass compositions which are popular for their transparency in the infrared range and their stability against crystallization. These glasses can be shaped into sophisticated optical devices such as optical fibers, planar guides or lenses. Nevertheless, their transparencies are limited at about 12 microm (depending on the thickness of the optical systems) due to the relatively small mass of the Se element. On the other hand, tellurium is heavier and its use in substitution for Se permits to shift the IR cutoff beyond 20 microm. However, the semimetallic nature of Te limits its glass formation ability and this glass family is known to be unstable and consequently has found application as phase change material in the Digital Versatile Disk (DVD) technology. In this paper, after a review of selenide glasses and their applications, it will be shown how, in a recent past, it has been possible to stabilize tellurium glasses by introducing new elements like Ga or I in their compositions.

Citations

Sep 26, 2013·Inorganic Chemistry·Tarun K BeraMercouri G Kanatzidis
Nov 5, 2014·Chemical Communications : Chem Comm·Arun Kumar SinhaTarasankar Pal
Aug 18, 2010·Organic & Biomolecular Chemistry·Lalla Aicha BaClaus Jacob
May 15, 2013·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Shuo CuiBruno Bureau
May 17, 2015·The Journal of Chemical Physics·R GolovchakH Jain
Apr 6, 2017·Biological Trace Element Research·Bijan ZareAhmad-Reza Shahverdi
Dec 30, 2020·Materials·Kadathala LingannaJu Hyeon Choi

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infrared spectroscopy
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