Premium
Analysis of Quantum Dot Formation and Exciton Localisation in the (Zn, Cd) (S, Se) System
Author(s) -
Strassburg M.,
Christen J.,
Dworzak M.,
Heitz R.,
Hoffmann A.,
Bartels M.,
Lischka K.,
Schikora D.
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200201)229:1<529::aid-pssb529>3.0.co;2-8
Subject(s) - quantum dot , exciton , photoluminescence , sulfur , materials science , optoelectronics , chemical physics , molecular physics , nanotechnology , chemistry , condensed matter physics , physics , metallurgy
The formation process and exciton localisation properties of CdSe/ZnSe quantum dot structures were studied. Pseudomorphically strained structures were exposed to a stationary sulphur vapour after the formation process of three‐dimensional (3D) islands. Temperature dependent photoluminescence investigations confirm the increasing 2D‐like character with increasing sulphur exposure times. The sulphur exposure had no impact on the island formation in partially relaxed structures.