DIFFERENT QUANTUM BEHAVIOR OF THE E(1) AND E(2) SPECTRAL STRUCTURES IN GE NANOCRYSTALS

Authors
TOGNINI P ANDREANI LC GEDDO M STELLA A CHEYSSAC P KOFMAN R MIGLIORI A
Citation
P. Tognini et al., DIFFERENT QUANTUM BEHAVIOR OF THE E(1) AND E(2) SPECTRAL STRUCTURES IN GE NANOCRYSTALS, Physical review. B, Condensed matter, 53(11), 1996, pp. 6992-6995
Citations number
29
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
53
Issue
11
Year of publication
1996
Pages
6992 - 6995
Database
ISI
SICI code
0163-1829(1996)53:11<6992:DQBOTE>2.0.ZU;2-B
Abstract
In this paper we report absorption measurements in the range 0.6-6.0 e V, performed at 77 K on Ge nanocrystals grown by a self-organization p rocess applied to a semiconductor. Evidence of a relevant blueshift a of E(2) and weakening of E(1) with Size reduction is obtained. This be havior is interpreted in terms of quantum confinement in connection wi th the different nature of the two structures.