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Proceedings Paper

LPE growth of Hg1-xCdxTe heterostructures using a novel tipping boat
Author(s): Krzysztof Adamiec; Jaroslaw Rutkowski; Antoni Rogalski; Waldemar Gawron; Jakub Wenus; Waldemar Larkowski
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Paper Abstract

A novel tipping boat for liquid phase epitaxial growth of mercury cadmium telluride from Te-rich solutions has been proposed. By optimizing the growth parameters and the construction of graphite boat it was possible to obtain in situ Hg1-xCdxTe heterostructures. The successful fabrication of long wavelength Hg1-yCdyTe/Hg1-xCdxTe heterostructures on semi-insulating CdZnTe substrates is presented. The heterostructures consist of a thin 1-2 micrometers layer on n-type 10-15 micrometers thick HgCdTe epilayer. The characterization of double-layer heterostructures was carried out using different methods. Variations in the layer thickness were determined by microscopic examination of cleaved samples. Average composition was determined from an IR absorption measurement on the central area of the layers. Chemical analysis and the Cd, Hg and Te profile compositions at different depths of the epitaxial layers were performed using secondary ion mass spectrometry. Transport properties were measured in temperature range of 77-300 K using the Van der Pauw arrangement. The paper also reports an experimental innovation of the in situ preparation of the mercury cadmium telluride heterostructures using the tipping method from Te- rich solutions performed in a one-zone reactor.

Paper Details

Date Published: 13 April 2000
PDF: 7 pages
Proc. SPIE 3948, Photodetectors: Materials and Devices V, (13 April 2000); doi: 10.1117/12.382140
Show Author Affiliations
Krzysztof Adamiec, Military Univ. of Technology (Poland)
Jaroslaw Rutkowski, Military Univ. of Technology (Poland)
Antoni Rogalski, Military Univ. of Technology (Poland)
Waldemar Gawron, Military Univ. of Technology (Poland)
Jakub Wenus, Military Univ. of Technology (Poland)
Waldemar Larkowski, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 3948:
Photodetectors: Materials and Devices V
Gail J. Brown; Manijeh Razeghi, Editor(s)

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