The Moss-Burstein effect has been invoked by a number of groups to explain variations in the band-edge absorption for InN samples of different carrier concentration. However, the variation of band-edge values reported in the literature is simply too broad to be explained solely by this effect. At least 5 separate apparent Moss-Burstein trends have been reported over the years [1-5], these trends appear to be related to the different methods of film growth used. We have examined samples that fall along one of the recently reported lines and find that it is dominated by a particular type of defect, and further suggest that the variations observed in the absorption properties of materials nominally referred to as InN are largely determined by stoichiometry related point defects.

[1] B. R. Natarajan, A.H. Eltoukhy, J. E. Greene and T. L. Barr, Thin Solid Films, 69 (1980) 201.
[2] T. L. Tansley, and C. P. Foley, J. Appl. Phys. 59 (1986) 3241.
[3] V. Yu Davydov, A. A. Klochikhin, V. V. Emtsev, S. V. Ivanov, V. V. Vekshin, F. Bechstedt, J. Furthmuller, H. Harima, A. V. Mudryi, A. Hashimoto, A. Yamamoto, A. J. Aderhold, J. Graul, E. E. Haller, Phys. Stat. Sol. B, 230 (2002) R4.
[4] W. Walukiewicz, S. X. Li, J. Wu, K. M. Yu, J. W. Ager III, E. E. Haller, Hai Lu, W. J. Schaff, J. Crystal Growth 269 (2004) 119.
[5] B. Maleyre, O. Briot, S. Ruffenach and B. Gil, Phys. Stat. Sol. C 2 (2005) 1379.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/3643 must be provided.