Evidence for 2D precursors and interdiffusion in the evolution of self-assembled CdSe quantum dots on ZnSe

Authors
Kim, CS Kim, M Furdyna, JK Dobrowolska, M Lee, S Rho, H Smith, LM Jackson, HE James, EM Xin, Y Browning, ND
Citation
Cs. Kim et al., Evidence for 2D precursors and interdiffusion in the evolution of self-assembled CdSe quantum dots on ZnSe, PHYS REV L, 85(5), 2000, pp. 1124-1127
Citations number
21
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
5
Year of publication
2000
Pages
1124 - 1127
Database
ISI
SICI code
0031-9007(20000731)85:5<1124:EF2PAI>2.0.ZU;2-7
Abstract
The evolution of self-assembled CdSe quantum dots deposited oil (and subseq uently capped by) ZnSe was investigated on a series of samples grown by mol ecular beam epitaxy, with CdSe coverages from 0.5 to 2.6 monolayers. The sa mples were investigated by cross-sectional scanning transmission electron m icroscopy, as well as macro- and microphotoluminescence. The results clearl y indicated a coexistence of 2D ZnCdSe platelets and 3D islands, showing cl early that the platelets act as precursors for the formation of the 3D isla nds.