PERPENDICULAR-ELECTRIC-FIELD DEPENDENCE OF EXCITON BINDING-ENERGY STUDIED BY CONTINUOUS-WAVE PHOTOLUMINESCENCE

Authors
LUO KJ ZHENG HZ XU SJ YANG XP ZHANG PH ZHANG W LI CF
Citation
Kj. Luo et al., PERPENDICULAR-ELECTRIC-FIELD DEPENDENCE OF EXCITON BINDING-ENERGY STUDIED BY CONTINUOUS-WAVE PHOTOLUMINESCENCE, Physical review. B, Condensed matter, 53(24), 1996, pp. 16453-16457
Citations number
15
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
53
Issue
24
Year of publication
1996
Pages
16453 - 16457
Database
ISI
SICI code
0163-1829(1996)53:24<16453:PDOEBS>2.0.ZU;2-O
Abstract
The reduction of exciton binding energy induced by a perpendicular ele ctric field in a stepped quantum well is studied. From continuous-wave photoluminescence spectra at 77 K we have observed an obvious blueshi ft of the exciton peak due to a spatially direct-to-indirect transitio n of excitons. A simple method is used to calculate the exciton bindin g energy while the inhomogeneous broadening is taken into account in a simple manner. The calculated result reproduces remarkably well the e xperimental observation.