Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Pyramidal quantum dots: High uniformity and narrow excitonic emission
AU - Mereni, L. O.
AU - Dimastrodonato, V.
AU - Young, R. J.
AU - Pelucchi, E.
PY - 2010/1
Y1 - 2010/1
N2 - 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.
AB - 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.
U2 - 10.1016/j.spmi.2009.07.033
DO - 10.1016/j.spmi.2009.07.033
M3 - Journal article
VL - 47
SP - 78
EP - 82
JO - Superlattices and Microstructures
JF - Superlattices and Microstructures
SN - 0749-6036
IS - 1
ER -