TITLE

Impact of quantum confinement and quantum confined Stark effect on biexciton binding energy in GaN/AlGaN quantum wells

AUTHOR(S)
Stokker-Cheregi, F.; Vinattieri, A.; Feltin, E.; Simeonov, D.; Levrat, J.; Carlin, J.-F.; Butté, R.; Grandjean, N.; Gurioli, M.
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p152105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on time-resolved photoluminescence measurements carried out along the thickness gradient of two types of GaN/AlGaN quantum wells with low Al content in the barriers (5% and 9%, respectively). A reduction of the biexciton binding energy with increasing well thickness is observed, as a result of the reduced quantum confinement and the increasing impact of the quantum confined Stark effect. In the sample with 5% Al content in the barriers, for thicknesses of the well region larger than ∼9 monolayers, the biexciton binding energy is found to be smaller than that measured for bulk GaN.
ACCESSION #
34984727

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics