Quantum confined acceptors and donors in InSe nanosheets

Journal Article · Mon Dec 01 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4903738· OSTI ID:22403373

Mudd, G. W.; Makarovsky, O.; Eaves, L. ^[1]; Kudrynskyi, Z. R.; Kovalyuk, Z. D. ^[2]; Fay, M. W. ^[3]; Zólyomi, V.; Falko, V. ^[4]

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1. School of Physics and Astronomy, The University of Nottingham, Nottingham NG7 2RD (United Kingdom)
2. Institute for Problems of Materials Science, The National Academy of Sciences of Ukraine, Chernivtsi 58001 (Ukraine)
3. Nottingham Nanotechnology and Nanoscience Centre, The University of Nottingham, Nottingham NG7 2RD (United Kingdom)
4. Physics Department, Lancaster University, Lancaster LA1 4YB (United Kingdom)

We report on the radiative recombination of photo-excited carriers bound at native donors and acceptors in exfoliated nanoflakes of nominally undoped rhombohedral γ-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.

• OSTI ID: 22403373
• Journal Information: Applied Physics Letters, Vol. 105, Issue 22; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINDING ENERGY
CHARGE CARRIERS
IMPURITIES
INDIUM SELENIDES
NANOSTRUCTURES
RECOMBINATION
SHEETS
TRIGONAL LATTICES
TWO-DIMENSIONAL CALCULATIONS