Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

Formation of excitons from free electron-hole pairs due to acoustic phonon interactions in quantam wells

Oh, IK and Singh, J (2001). Formation of excitons from free electron-hole pairs due to acoustic phonon interactions in quantam wells. Superlattices and Microstructures,30(5):221-229.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 0 times in Scopus Article

Google Scholar Search Google Scholar

Title Formation of excitons from free electron-hole pairs due to acoustic phonon interactions in quantam wells
Author Oh, IK
Singh, J
Journal Name Superlattices and Microstructures
Publication Date 2001
Volume Number 30
Issue Number 5
ISSN 0749-6036   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-0035743956
Start Page 221
End Page 229
Total Pages 9
Place of Publication Amsterdam, Netherlands
Publisher Elsevier
HERDC Category C1 - Journal Article (DEST)
Abstract A study of the process of exciton formation due to acoustic phonon interaction in quantum wells (QWs) is presented. Considering that excitons are formed from photoexcited free electron-hole pairs, we have derived the rate of such formation as a function of density and temperature of charge carriers and wavevector K∥ of the center-of-mass motion of exciton, and finally applied our theory to GaAs/AlGaAs QWs. We have found that the formation of an exciton due to acoustic phonon emission is more efficient at relatively large values of K∥ (hot excitons) whereas that due to longitudinal optical (LO) phonon emission is more efficient at relatively small values of K∥.
DOI http://dx.doi.org/10.1006/spmi.2001.1001   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
Versions
Version Filter Type
Access Statistics: 30 Abstract Views  -  Detailed Statistics
Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator