- Tytuł:
- Optics of Zero Dimensional Semiconductor Systems
- Autorzy:
-
Ekimov, A. I.
Efros, Al. L. - Powiązania:
- https://bibliotekanauki.pl/articles/1877306.pdf
- Data publikacji:
- 1991-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 78.90.+t
- Opis:
- The optical spectra of semiconductor microcrystals grown in transparent matrix of oxide glass are investigated. The size of microcrystals was varied in a controlled manner from a few tens to a few hundreds of angstroms. The microcrystal embedded in wide gap matrix represents three-dimensional potential well for electrons, holes and excitons. The optical properties of such zero-dimensional semiconductor structures are shown to be governed by the structure of energy spectra of confined electron-hole pairs. The phenomenon of the microcrystals ionization at interband optical excitation is observed. The Auger process in microcrystals containing two nonequilibrium electron-hole pairs is proposed to be responsible for this effect. The experimental dependencies of the ionization rate as a function of excitation intensity and the microcrystal size are in a good agreement with the theoretical predictions of the Auger recombiantion model.
- Źródło:
-
Acta Physica Polonica A; 1991, 79, 1; 5-14
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł