Fermi-level effect on the interdiffusion of InAs and InGaAs quantum dots

Citation
Ob. Shchekin et al., Fermi-level effect on the interdiffusion of InAs and InGaAs quantum dots, APPL PHYS L, 78(20), 2001, pp. 3115-3117
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
20
Year of publication
2001
Pages
3115 - 3117
Database
ISI
SICI code
0003-6951(20010514)78:20<3115:FEOTIO>2.0.ZU;2-4
Abstract
Data are presented on the Fermi level influence on interdiffusion in self-o rganized quantum dots. Modulation doping is used to place either electrons or holes in the quantum dots' zero-dimensional levels. The ground state emi ssion energy and discrete level energy separations show that p-type modulat ion doping enhances the interdiffusion of the quantum dot material with its surrounding barriers, while n-type doping inhibits the interdiffusion. The results are consistent with the interdiffusion proceeding through intersti tial crystal defects. (C) 2001 American Institute of Physics.