Journal
THIN SOLID FILMS
Volume 571, Issue -, Pages 680-683Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2013.10.157
Keywords
Temperature dependence of semiconductor gaps; Tetrahedral semiconductors; Silicon; GaX (X = N, P, As, Sb)
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Understanding the temperature dependence of the direct and indirect gaps is indispensable for optimizing the applications of semiconductors. Experimentally, this temperature dependence can be very precisely determined by ellipsometry, by absorption or by luminescence spectroscopy. We have re-analyzed the temperature dependence of the direct and indirect gaps of some prominent tetrahedral semiconductors and improved available fits by applying a simple modified approach which uses statistical factors and the knowledge of prominent transverse-acoustic and transverse-optical bands in the measured or calculated phonon density of states of the semiconductors under consideration. (C) 2013 Elsevier B.V. All rights reserved.
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