Specific features of the Urbach rule manifestation in vitreous materials / Vainshtein IA,Zatsepin AF,Kortov VS // GLASS PHYSICS AND CHEMISTRY. - 1999. - V. 25, l. 1. - P. 67-74.

ISSN/EISSN:

1087-6596 / нет данных

Type:

Article

Abstract:

The equivalence principle of static and dynamic disorders is applied to demonstrate that the ``crystalline{''} and ``vitreous{''} versions of the Urbach rule are the limiting cases of the general exponential dependence of optical absorption coefficient around the ultraviolet absorption edge. The temperature boundaries of the realizability of the vitreous Urbach rule are determined. The relation between the basic characteristic parameters E-0 and T-0 of the vitreous version of the Urbach rule is derived, and their physical interpretation is given. The main structural factors responsible for the E-0 parameter are analyzed on the basis of the available experimental data for a number of vitreous materials with dominant static disorder. The T-0 values and temperature coefficients of the band gap are determined, and the lower boundaries of the temperature ranges, where the behavior of the fundamental absorption edge is described by the vitreous Urbach rule, are evaluated for various glasses.

Author keywords:

ALKALI SILICATE-GLASSES; LOCALIZED STATES; ABSORPTION EDGES; SURFACE-LAYERS; SEMICONDUCTORS; EMISSION; DISORDER

DOI:

нет данных

Web of Science ID:

ISI:000078893500006

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN-FEB
Publisher	MAIK NAUKA/INTERPERIODICA
Address	C/O PLENUM/CONSULTANTS BUREAU 233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
Keywords-Plus	ALKALI SILICATE-GLASSES; LOCALIZED STATES; ABSORPTION EDGES; SURFACE-LAYERS; SEMICONDUCTORS; EMISSION; DISORDER
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Ceramics
ResearcherID-Numbers	Zatsepin, Anatoly/L-7335-2016 Weinstein, Ilya/K-8178-2012
ORCID-Numbers	Zatsepin, Anatoly/0000-0001-9539-2403 Weinstein, Ilya/0000-0002-5573-7128
Number-of-Cited-References	32
Usage-Count-Since-2013	1
Journal-ISO	Glass Phys. Chem.
Doc-Delivery-Number	171YX