Applicability of the empirical Varshni relation for the temperature dependence of the width of the band gap / Vainshtein IA,Zatsepin AF,Kortov VS // PHYSICS OF THE SOLID STATE. - 1999. - V. 41, l. 6. - P. 905-908.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

We have carried out a comparison of relations used to describe the temperature dependence of the width of the band gap in crystals. It is shown that for kT >(h) over bar omega the well-known Varshni relation can be obtained from the non-empirical Fan expression in explicit form taking account of the phonon statistics. We have calculated the temperature coefficient beta of the width of the band gap for a number of materials in the range where the high-temperature condition is not met. We have found that the Varshni relation overestimates beta, whereas calculations based on the Fan expression agree with experiment. (C) 1999 American Institute of Physics. {[}S1063-7834(99)01406-9].

Author keywords:

нет данных

DOI:

10.1134/1.1130901

Web of Science ID:

ISI:000081195100014

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN
Publisher	AMER INST PHYSICS
Address	CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA
Language	English
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
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	17
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	7
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	212AY