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Rights statement: © 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
| Article number | 221909 |
|---|---|
| <mark>Journal publication date</mark> | 1/12/2014 |
| <mark>Journal</mark> | Applied Physics Letters |
| Issue number | 22 |
| Volume | 105 |
| Number of pages | 5 |
| Publication Status | Published |
| <mark>Original language</mark> | English |
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.