Peer-Reviewed Journal Details
Mandatory Fields
Mereni L.;Dimastrodonato V.;Young R.;Pelucchi E.
2010
January
Superlattices And Microstructures
Pyramidal quantum dots: High uniformity and narrow excitonic emission
Validated
Scopus: 3 ()
Optional Fields
InGaAs dot MOVPE Site-controlled quantum dots Small inhomogeneous broadening Spectral purity
47
1
78
82
We report on the optical properties of site-controlled InGaAs dots in GaAs barriers grown in pre-patterned, large pitch, pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogeneous broadening of excitonic emission from an ensemble of quantum dots is found to be extremely narrow, with a standard deviation of 1.19 meV. A dramatic improvement in the spectral purity of emission lines from individual dots is also reported (18-30 µeV ) when compared to the state-of-the-art for site controlled quantum dots. © 2009 Elsevier Ltd. All rights reserved.
0749-6036
10.1016/j.spmi.2009.07.033
Grant Details