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Proceedings Paper

MBE Growth of Sb-based type-2 quantum dots for the application to long wavelength sensors
Author(s): E. H. Lee; J. D. Song; S. Y. Kim; M. H. Bae; I. K. Han; S. K. Chang; J. I. Lee; Q. Wang; A. Karim; J. Andersson
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Paper Abstract

InSb nanostructures embedded in InAs and InAsSb matrices were grown on InAs (001) and GaAs (001) substrates by molecular beam epitaxy. The diameter and height of InSb quantum dots (QDs) on InAs with 2ML-InSb coverage grown by Stranski-Krastanov (S-K) are ~36.8 nm and ~3.1 nm, respectively. The density of QDs is ~2.5×1010 cm-2. The size distribution of InSb QDs on InAs with 2ML-InSb coverage grown by migration enhanced epitaxy (MEE) was larger than that of its S-K counterpart. Unique InSb quantum dashes (Q-dashes) on InAsSb elongated along two directions were found on an AlSb-buffered GaAs substrate. InSb Q-dashes grown by migration enhanced epitaxy (MEE) were ~159 nm in length, ~63 nm in width, and ~11 nm in height. A large reduction of volume of InSb structures between those in the matrix and those on the surface was found. Threading disl°Cations resulting from the Q-dash structures were also observed. This may be attributed to As-Sb exchange.

Paper Details

Date Published: 21 January 2012
PDF: 6 pages
Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82680J (21 January 2012); doi: 10.1117/12.908896
Show Author Affiliations
E. H. Lee, Korea Institute of Science and Technology (Korea, Republic of)
Yonsei Univ. (Korea, Republic of)
J. D. Song, Korea Institute of Science and Technology (Korea, Republic of)
S. Y. Kim, Korea Institute of Science and Technology (Korea, Republic of)
M. H. Bae, Korea Institute of Science and Technology (Korea, Republic of)
I. K. Han, Korea Institute of Science and Technology (Korea, Republic of)
S. K. Chang, Yonsei Univ. (Korea, Republic of)
J. I. Lee, Korea Institute of Science and Technology (Korea, Republic of)
Q. Wang, Acreo AB (Sweden)
A. Karim, Acreo AB (Sweden)
J. Andersson, Acreo AB (Sweden)


Published in SPIE Proceedings Vol. 8268:
Quantum Sensing and Nanophotonic Devices IX
Manijeh Razeghi; Eric Tournie; Gail J. Brown, Editor(s)

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