248 citations · 417 across the 12 of their papers we have counts for
12 papers
Complex optical signatures from quantum dot nanostructures and behavior in inverted pyramidal recesses
G. Juska, V. Dimastrodonato, L. O. Mereni +6
A study of previously overlooked structural and optical properties of InGaAs heterostructures grown on (111)B oriented GaAs substrates patterned with inverted 7.5 um pitch pyramida…
Towards quantum dot arrays of entangled photon emitters
Gediminas Juska, Valeria Dimastrodonato, Lorenzo O. Mereni +2
We show that with a new family of pyramidal site-controlled InGaAsN quantum dots it is possible to obtain areas containing as much as 15% of polarization-entangled photon emitters…
Semiconductor nanostructures engineering: Pyramidal quantum dots
E. Pelucchi, V. Dimastrodonato, L. O. Mereni +2
Pyramidal quantum dots (QDs) grown in inverted recesses have demonstrated over the years an extraordinary uniformity, high spectral purity and strong design versatility. We discuss…
Wettability and "petal effect" of GaAs native oxides
A. Gocalinska, K. Gradkowski, V. Dimastrodonato +4
We discuss unreported transitions of oxidized GaAs surfaces between (super)hydrophilic and hydrophobic states when stored in ambient conditions. Contact angles higher than 90deg an…
AlGaAs/GaAs/AlGaAs quantum wells as a sensitive tool for the MOVPE reactor environment
V. Dimastrodonato, L. O. Mereni, R. J. Young +1
We present in this work a simple Quantum Well (QW) structure consisting of GaAs wells with AlGaAs barriers as a probe for measuring the performance of arsine purifiers within a Met…
Impact of Nitrogen incorporation on pseudomorphic site-controlled quantum dots grown by Metalorganic Vapour Phase Epitaxy
V. Dimastrodonato, L. O. Mereni, G. Juska +1
We report on some surprising optical properties of diluted nitride InGaAs_(1-y)N_y /GaAs (y<<1) pyramidal site-controlled quantum dots, grown by metalorganic vapor phase epitaxy on…
Relevance of the purity level in a MetalOrganic Vapour Phase Epitaxy reactor environment for the growth of high quality pyramidal sitecontrolled Quantum Dots
Valeria Dimastrodonato, Lorenzo O. Mereni, Robert J. Young +1
We report in this work on the spectral purity of pyramidal site-controlled InGaAs/AlGaAs Quantum Dots grown by metalorganic vapour phase epitaxy on(111)B oriented GaAs substrates.…
Physical properties of highly uniform InGaAs pyramidal quantum dots with GaAs barriers: Fine structure splitting in pre-patterned substrates
L. O. Mereni, V. Dimastrodonatoa, G. Juskaa +2
InGaAs Quantum Dots embedded in GaAs barriers, grown in inverted tetrahedral recesses of 7 μm edge, have showed interesting characteristics in terms of uniformity and spectral narr…
Growth and structural characterization of pyramidal site-controlled quantum dots with high uniformity and spectral purity
Valeria Dimastrodonato, Lorenzo O. Mereni, Robert J. Young +1
This work presents some fundamental features of pyramidal site-controlled InGaAs Quantum Dots (QDs) grown by MetalOrganic Vapour Phase Epitaxy on patterned GaAs (111)B substrate. T…
Low-angle misorientation dependence of the optical properties of InGaAs/InAlAs quantum wells
Robert J. Young, Lorenzo O. Mereni, Nikolay Petkov +5
We investigate the dependence of the low-temperature photoluminescence linewidths from InP-lattice-matched InGaAs/InAlAs quantum wells on the low-angle misorientation from the (100…
A novel site-controlled quantum dot system with high uniformity and narrow excitonic emission
L. O. Mereni, V. Dimastrodonato, R. J. Young +1
We report on the optical properties of a newly developed site-controlled InGaAs Dots in GaAs barriers grown in pre-patterned pyramidal recesses by metalorganic vapour phase epitaxy…
A site-controlled quantum dot system offering both high uniformity and spectral purity
L. O. Mereni, V. Dimastrodonato, R. J. Young +1
In this paper we report on the optical properties of site controlled InGaAs dots with GaAs barriers grown in pyramidal recesses by metalorganic vapour phase epitaxy. The inhomogene…