| Issue |
EPL
Volume 148, Number 5, December 2024
|
|
|---|---|---|
| Article Number | 55003 | |
| Number of page(s) | 6 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/0295-5075/ad95b7 | |
| Published online | 11 December 2024 | |
Efficient intraband radiative recombination in Bi-doped Si nanocrystals
Lobachevsky State University of Nizhny Novgorod - 603022, Nizhny Novgorod, Russia
Received: 30 August 2024
Accepted: 21 November 2024
It is shown theoretically that sufficiently strong short-range potential of a donor in combination with the effect of quantum confinement is capable of creating great splitting of the energy levels in the conduction band of small Si nanocrystals with a Bi atom. Consequently, radiative transitions between the split levels can generate photons of the near-infrared and, even, visible ranges. Typical rates of these intraband transitions are of the order of 107 s−1, which allows one to hope for high efficiency of possible luminescence in the system.
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