Peer-Reviewed Journal Details
Mandatory Fields
Dimastrodonato V.;Mereni L.;Young R.;Pelucchi E.
2010
August
Physica Status Solidi B-Basic Solid State Physics
Growth and structural characterization of pyramidal site-controlled quantum dots with high uniformity and spectral purity
Validated
Scopus: 13 ()
Optional Fields
Etching Growth InGaAs MOVPE Photoluminescence Quantum dots Structure
247
8
1862
1866
This work presents some fundamental features of pyramidal site-controlled InGaAs Quantum Dots (QDs) grown by metal-organic vapour phase epitaxy on patterned GaAs (111)B substrate. The dots self-form inside pyramidal recesses patterned on the wafer via pre-growth processing. The major advantage of this growth technique is the control it provides over the dot nucleation position and the dimensions of the confined structures onto the substrate. The fundamental steps of substrate patterning and the QD formation mechanism are described together with a discussion of the structural particulars. The post-growth processes, including surface etching and substrate removal, which are required to facilitate optical characterization, are discussed. With this approach extremely high uniformity and record spectral purity are both achieved. 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
0370-1972
10.1002/pssb.200983803
Grant Details