Growth and structural characterization of pyramidal site-controlled quantum dots with high uniformity and spectral purity

Dimastrodonato, Valeria and Mereni, Lorenzo O. and Young, Robert J. and Pelucchi, Emanuele (2010) Growth and structural characterization of pyramidal site-controlled quantum dots with high uniformity and spectral purity. physica status solidi (b), 247 (8). pp. 1862-1866. ISSN 0370-1972

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Abstract

This work presents some fundamental features of pyramidal site-controlled In GaAs 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.

Item Type:
Journal Article
Journal or Publication Title:
physica status solidi (b)
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
54906
Deposited By:
Deposited On:
06 Jun 2012 13:03
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 07:54