Download e-book for iPad: Amorphous Chalcogenide Semiconductors and Related Materials by Keiji Tanaka

By Keiji Tanaka

ISBN-10: 1441995099

ISBN-13: 9781441995094

Amorphous Chalcogenide Semiconductors and similar Materials describes advancements within the technological know-how and expertise of this advancing category of fabrics. This ebook deals an updated therapy of chalcogenide glasses, amorphous semiconductors, and photonics glasses from simple rules via to functions, whereas delivering the reader with solid-state sciences for realizing the fabric estate and expertise. Chalcogenide glasses have a few fascinating and beneficial homes, which were already exploited within the commercialization of latest units. The booklet describes them at size, whereas it additionally:

  • Discusses technological functions similar to nonlinear optical fibers, DVDs, and excessive solution mammographic x-ray photograph detectors
  • Includes insurance of noncrystalline semiconductors with glassy semiconductors

Amorphous or glassy chalcogenides are a type of noncrystalline and thermodynamically quasi-stable solids. Such fabrics own completely different homes than crystalline solids, and accordingly warrant special dialogue and outline, which Amorphous Chalcogenide Semiconductors and comparable Materials provides.

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Extra info for Amorphous Chalcogenide Semiconductors and Related Materials

Sample text

A note on small rings should be added. As known, c-SiO2 takes a variety of atomic structures, in which the most common is the quartz, or β-quartz (the hightemperature form, Fig. 1). The crystal structure is hexagonal (Fig. 7d) consisting of SiO4/2 tetrahedra, which contain 3 (6 atom)- and 6-membered (12 atom) rings. On the other hand, in g-SiO2 , it is plausible that a variety of rings exist. And, some researchers assume small rings such as 3- and 4-membered rings as defects. % in some cases (Kohara and Suzuya 2005), it seems to be better to regard such small rings as strained normal bonds.

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. Jpn. J. Appl. Phys. : Chemical and medium-range orders in As2 S3 glass. Phys. Rev. : Pressure studies of amorphous semiconductors. , Vavrek, A. ) Disordered Systems and New Materials, pp. 290–309.

In addition, it should be underlined that also the property of melt-quenched glasses depends upon preparation procedures, as being exemplified for As2 S(Se)3 (Cimpl et al. 1981, Yang et al. 1986, Tanaka 1987) and GeS(Se)2 (Zhilinskaya et al. 1992, Holomb et al. 2005). 20 shows that, in melt-quenched As2 S3 glass, the optical bandgap considerably depends upon the reacting temperature Tq and the quenching rate (Tanaka 1987). After preparation, the ingot may be shaped by polishing and/or annealed for stabilization.

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Amorphous Chalcogenide Semiconductors and Related Materials by Keiji Tanaka


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