Optical Bandgap Definition via a Modified Form of Urbach’s Rule

We are reporting an esoteric method to determine the optical bandgap of direct gap materials by employing Urbach’s rule. The latter, which describes the slope of the band tail absorption in semiconductors, in its original version, cannot be employed to pinpoint the optical bandgap. Herein, however,...

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Bibliographic Details
Main Authors: Mithun Bhowmick, Haowen Xi, Bruno Ullrich
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Materials
Subjects:
InP
Online Access:https://www.mdpi.com/1996-1944/14/7/1639