By Keiji Tanaka
Amorphous Chalcogenide Semiconductors and similar Materials describes advancements within the technology and know-how of this advancing type of fabrics. This publication deals an up to date remedy of chalcogenide glasses, amorphous semiconductors, and photonics glasses from simple ideas via to purposes, whereas delivering the reader with solid-state sciences for realizing the cloth estate and expertise. Chalcogenide glasses have a couple of attention-grabbing and precious houses, that have been already exploited within the commercialization of recent units. The booklet describes them at size, whereas it additionally:
- Discusses technological functions resembling nonlinear optical fibers, DVDs, and excessive answer mammographic x-ray picture detectors
- Includes assurance of noncrystalline semiconductors with glassy semiconductors
Amorphous or glassy chalcogenides are a type of noncrystalline and thermodynamically quasi-stable solids. Such fabrics own different homes than crystalline solids, and for that reason warrant unique dialogue and outline, which Amorphous Chalcogenide Semiconductors and comparable Materials provides.
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Additional info for Amorphous Chalcogenide Semiconductors and Related Materials
2 Practical Structure 33 Fig. 7 Structure models of (a) g-SiO2 (three-dimensional continuous random network), (b) g-As2 S3 (two-dimensional distorted layers), (c) g-Se (one-dimensional entangled chains), and (d) c-SiO2 . In (a) and (d), Si and O are shown by circles with four and twofold coordination. In (b), As and S are shown by solid and open circles with three and twofold coordination. Note that (a) includes a small ring and an E center, (b) contains wrong bonds (As−As and S−S), and (c) contains a few ring molecules.
Phys. Condens. : Mass spectroscopic study of evaporated Se films and melt-quenched Se glasses. J. Non-Cryst. : Photoemission study of the crystallization of amorphous Te film. J. NonCryst. : The effects of tensile stress on the Raman spectrum of silica glass. J. Non-Cryst. : Optical characterization of a-As2 S3 thin films prepared by magnetron sputtering. J. Appl. Phys. : Evidence for reversible photostructural change in local order of amorphous As2 S3 film. Solid State Commun. : Configurational and structural models for photodarkening in glassy chalcogenides.
1992, Ichikawa 1995). However, we may have some doubts about reliability and/or reproducibility of the surfacesensitive images. Nevertheless, atomic images obtained for Se films (Peled et al. 1995) and cleaved surfaces of oxide glasses (Poggemann et al. 2003) seem genuine. Specifically, Poggemann et al. (2003) take a histogram of obtained atomic images for a few glasses, as exemplified for g-SiO2 in Fig. 12, which appears Fig. 11 An EXAFS spectrum for Ge in c-GeS2 (left) and RDFs for Ge in c- and g-GeS2 (right).
Amorphous Chalcogenide Semiconductors and Related Materials by Keiji Tanaka