Mudd, G. W. and Patane, A. and Kudrynskyi, Z. R. and Fay, M. W. and Makarovsky, O. and Eaves, L. and Kovalyuk, Z. D. and Zolyomi, V. and Falko, V. (2014) Quantum confined acceptors and donors in InSe nanosheets. Applied Physics Letters, 105 (22): 221909. ISSN 0003-6951
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Abstract
We report on the radiative recombination of photo-excited carriers bound at native donors and acceptors in exfoliated nanoflakes of nominally undoped rhombohedral gamma-polytype InSe. The binding energies of these states are found to increase with the decrease in flake thickness, L. We model their dependence on L using a two-dimensional hydrogenic model for impurities and show that they are strongly sensitive to the position of the impurities within the nanolayer. (c) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.