Journal article
Exciton dynamics in GaAs/(Al,Ga)As core-shell nanowires with shell quantum dots
Abstract
We study the dynamics of excitons in GaAs/(Al,Ga)As core-shell nanowires by continuous-wave and time-resolved photoluminescence and photoluminescence excitation spectroscopy. Strong Al segregation in the shell of the nanowires leads to the formation of Ga-rich inclusions acting as quantum dots. At 10 K, intense light emission associated with these shell quantum dots is observed. The average radiative lifetime of excitons confined in the shell …
Authors
Corfdir P; Küpers H; Lewis RB; Flissikowski T; Grahn HT; Geelhaar L; Brandt O
Journal
Physical Review B, Vol. 94, No. 15,
Publisher
American Physical Society (APS)
Publication Date
October 1, 2016
DOI
10.1103/physrevb.94.155413
ISSN
2469-9950