Home > Research > Publications & Outputs > Pyramidal quantum dots: High uniformity and nar...

Associated organisational unit

Text available via DOI:

View graph of relations

Pyramidal quantum dots: High uniformity and narrow excitonic emission

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>01/2010
<mark>Journal</mark>Superlattices and Microstructures
Issue number1
Number of pages5
Pages (from-to)78-82
<mark>Original language</mark>English


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 mu eV) when compared to the state-of-the-art for site controlled quantum dots. (C) 2009 Elsevier Ltd. All rights reserved.