- Tytuł:
- Optically-Determined Exciton Transport in GaAs Structures
- Autorzy:
-
Gililand, G. D.
Wolford, D. J
Hjalmarson, H. P
Petrovic, M. S.
Klem, J.
Kuech, T. F.
Northrop, G. A.
Bradley, J. A. - Powiązania:
- https://bibliotekanauki.pl/articles/1929606.pdf
- Data publikacji:
- 1993-09
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
78.47.+p
72.80.Ey - Opis:
- We have used an all-optical photoluminescence-imaging technique to measure excitonic transport in three types of GaAs structures in which the excitonic transitions vary from allowed direct-gap excitons to forbidden, doubly-indirect Type-II excitons. We f nd remarkable differences in the transport properties of these excitons. Our studies show that bulk free-exciton transport exhibits an anomalous laser power-dependent diffusivity, whereas quasi-2D interfacial excitons and Type-II cross-interface excitons do not. Additionally, we observe localization of cross-interface excitons at the potential disorder induced by the heterointerface roughness.
- Źródło:
-
Acta Physica Polonica A; 1993, 84, 3; 409-417
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł