TITLE

Molecular beam epitaxy growth of InSb films on GaAs

AUTHOR(S)
Davis, John L.; Thompson, Phillip E.
PUB. DATE
May 1989
SOURCE
Applied Physics Letters;5/29/1989, Vol. 54 Issue 22, p2235
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
InSb films have been grown by molecular beam epitaxy on GaAs substrates. The procedure incorporated a low-temperature (300 °C) growth of a thin (300 Å) InSb interface layer prior to the InSb active layer growth at 380 °C. A beam equivalent pressure ratio of Sb4 to In of 4 led to samples with the highest 77 K Hall mobilities. Hall mobilities in excess of 35 000 cm2 /V s at 77 K and x-ray rocking curve widths less than 250 arcsec are routinely achieved in films 2–5 μm thick. The 77 K Hall electron mobilities are a factor of 4 greater than recently reported results. The x-ray rocking curve widths are also substantially less. Possible explanations for the improved film properties are discussed.
ACCESSION #
9831411

 

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