ZERO-DIMENSIONAL EXCITONS IN (ZN,CD)SE QUANTUM STRUCTURES

Authors
LOWISCH M RABE M STEGEMANN B HENNEBERGER F GRUNDMANN M TURCK V BIMBERG D
Citation
M. Lowisch et al., ZERO-DIMENSIONAL EXCITONS IN (ZN,CD)SE QUANTUM STRUCTURES, Physical review. B, Condensed matter, 54(16), 1996, pp. 11074-11077
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
16
Year of publication
1996
Pages
11074 - 11077
Database
ISI
SICI code
0163-1829(1996)54:16<11074:ZEI(QS>2.0.ZU;2-K
Abstract
This paper reports the observation of truly zero-dimensional excitons of extremely small homogeneous width in highly strained (Zn,Cd)Se/ZnSe quantum-well structures (Cd content >30%, well width less than or equ al to 3 nm). The occurrence of extra phonon modes not observable on we lls of standard design (<20%, >5 nm) indicates structural modification s giving rise to localization sites with sufficiently strong confineme nt potential. The lifetime of the zero-dimensional excitons ranges bet ween 200 and 250 ps.