Physics of the Solid State

, volume 41 , issue 6 , pages 905-908

Applicability of the empirical Varshni relation for the temperature dependence of the width of the band gap

I A Vainshtein ¹

A. F. Zatsepin ¹

V S Kortov ¹

Hide authors affiliations Show authors affiliations: 1 affiliation

Urals State Technical University, Ekaterinburg, Russia |

Publication type: Journal Article

Publication date: 1999-06-01

Pleiades Publishing

Physics of the Solid State

scimago Q4

wos Q3

SJR: 0.183

CiteScore: 1.4

Impact factor: 1.8

ISSN: 10637834, 10906460, 17267498

DOI: 10.1134/1.1130901

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Electronic, Optical and Magnetic Materials

Condensed Matter Physics

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≫ℏω 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 bof 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 β, whereas calculations based on the Fan expression agree with experiment.

Found

3 citations

Naumov Andrei

🥼

DSc in Physics and Mathematics, associate professor, associate member of the Russian Academy of Sciences

136 publications, 1 737 citations, 6 reviews

h-index: 24

P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Institute of Spectroscopy of the Russian Academy of Sciences

Moscow Pedagogical State University

Research interests

Atomic force microscopy

Fluorescence nanoscopy

Single-molecule spectroscopy

Spectroscopy

2 citations

ARZHANOV ARTEM

PhD in Physics and Mathematics

37 publications, 353 citations

h-index: 12

P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Institute of Spectroscopy of the Russian Academy of Sciences

Moscow Pedagogical State University

Research interests

Cryogenic technology

Luminescent materials

Optics

Raman spectroscopy

Spectroscopy

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Vainshtein I. A., Zatsepin A. F., Kortov V. S. Applicability of the empirical Varshni relation for the temperature dependence of the width of the band gap // Physics of the Solid State. 1999. Vol. 41. No. 6. pp. 905-908.

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RIS |

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RIS Copy

TY - JOUR

DO - 10.1134/1.1130901

UR - https://doi.org/10.1134/1.1130901

TI - Applicability of the empirical Varshni relation for the temperature dependence of the width of the band gap

T2 - Physics of the Solid State

AU - Vainshtein, I A

AU - Zatsepin, A. F.

AU - Kortov, V S

PY - 1999

DA - 1999/06/01

PB - Pleiades Publishing

SP - 905-908

IS - 6

VL - 41

SN - 1063-7834

SN - 1090-6460

SN - 1726-7498

ER -

BibTex |

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@article{1999_Vainshtein,

author = {I A Vainshtein and A. F. Zatsepin and V S Kortov},

title = {Applicability of the empirical Varshni relation for the temperature dependence of the width of the band gap},

journal = {Physics of the Solid State},

year = {1999},

volume = {41},

publisher = {Pleiades Publishing},

month = {jun},

url = {https://doi.org/10.1134/1.1130901},

number = {6},

pages = {905--908},

doi = {10.1134/1.1130901}

}

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MLA Copy

Vainshtein, I. A., et al. “Applicability of the empirical Varshni relation for the temperature dependence of the width of the band gap.” Physics of the Solid State, vol. 41, no. 6, Jun. 1999, pp. 905-908. https://doi.org/10.1134/1.1130901.

Publisher

Pleiades Publishing

Journal

Physics of the Solid State

scimago Q4

wos Q3

SJR

0.183

CiteScore

1.4

Impact factor

1.8

ISSN

10637834 (Print)

10906460 (Electronic)

17267498 (Print)