Size-induced direct-to-indirect gap transition in GaSb/AlSb multiple quantum well structures

Autor:	G. Tränkle, U. Cebulla, G. Griffiths, S. Subbanna, Alfred Forchel, Herbert Kroemer
Rok vydání:	1986
Předmět:	Excitation spectroscopy Physics Yield (engineering) Condensed matter physics Band gap Multiple quantum Materials Chemistry Surfaces and Interfaces Carrier lifetime Condensed Matter Physics Quantum well Surfaces Coatings and Films
Zdroj:	Surface Science. 174:143-147
ISSN:	0039-6028
Popis:	Using excitation spectroscopy we have investigated the size-induced cross-over from direct to indirect bandstructure in GaSb/AlSb quantum wells. In samples with Lz < 30 A we observe in particular the emission from the indirect and the direct energy gap of the wells, whereas for larger Lz only the direct transition occurs. Time-resolved measurements yield a change of the carrier lifetime by about a factor of 100 at the cross-over.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c2d19ccb209b8ebc40afddd66df6b70f https://doi.org/10.1016/0039-6028(86)90399-7 Zobrazit plný text záznamu