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Proceedings Paper

Fabrication and characterization of InGaAs-GaAs quantum wire arrays by selective-area metalorganic chemical vapor deposition
Author(s): Mark L. Osowski; R. Panepucci; E. E. Reuter; Stephen G. Bishop; Ilesanmi Adesida; James J. Coleman
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Paper Abstract

We discuss the fabrication and optical characterization of strained-layer InGaAs-GaAs nanometer scale wire arrays grown by selective-area MOCVD on silicon dioxide patterned substrates. The wire patterns studied were obtained by high resolution electron beam lithography on PMMA using a silicon dioxide lift-off process. The dependence of the growth structure on the wire orientation is presented. Wire arrays aligned parallel to the [011] crystal direction are found to be the extremely useful for the growth of narrow quantum wire structures. Due to the faceted nature of the growth, a large non-linear enhancement of growth inside the wire region is observed. In addition, the results of gas phase diffusion growth simulations on the expected inhomogeneity of the fabricated quantum wires are presented. The degree of inhomogeneity of fabricated quantum wire arrays was studied by spatially resolved photoluminescence. Our results show that a suitable patterning technique, coupled with proper growth conditions, could allow control of the selective growth profile across the wire array. Finally, the growth of strained wires with a lateral dimension of less than 50 nm is displayed along with optical characterization of the quantum wires by low temperature photoluminescence.

Paper Details

Date Published: 30 January 1997
PDF: 16 pages
Proc. SPIE 2918, Emerging Components and Technologies for All-Optical Photonic Systems II, (30 January 1997); doi: 10.1117/12.265363
Show Author Affiliations
Mark L. Osowski, Univ. of Illinois/Urbana-Champaign (United States)
R. Panepucci, Univ. of Illinois/Urbana-Champaign (United States)
E. E. Reuter, Univ. of Illinois/Urbana-Champaign (United States)
Stephen G. Bishop, Univ. of Illinois/Urbana-Champaign (United States)
Ilesanmi Adesida, Univ. of Illinois/Urbana-Champaign (United States)
James J. Coleman, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 2918:
Emerging Components and Technologies for All-Optical Photonic Systems II
Emil S. Koteles; Alan Eli Willner, Editor(s)

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