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Light Emission from Impurity Centres and Urbach's Rule
Author(s) -
Lubchenko A. F.,
Dudkin S. I.
Publication year - 1970
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19700400104
Subject(s) - impurity , emission spectrum , wavelength , spectrum (functional analysis) , absorption edge , enhanced data rates for gsm evolution , spectral line , visible spectrum , materials science , absorption spectroscopy , condensed matter physics , atomic physics , optics , physics , telecommunications , quantum mechanics , band gap , computer science
An investigation is made of the shape of the emission spectra due to impurity centres in a solid, taking into account the variation of its quasi‐elastic constants during the phototransitions. A formula for the short‐wavelength edge of the emission spectrum similar to the Urbach expression for absorption is obtained.