TITLE

Heavy carbon doping of metalorganic chemical vapor deposition grown GaAs using carbon tetrachloride

AUTHOR(S)
Cunningham, B. T.; Haase, M. A.; McCollum, M. J.; Baker, J. E.; Stillman, G. E.
PUB. DATE
May 1989
SOURCE
Applied Physics Letters;5/8/1989, Vol. 54 Issue 19, p1905
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A mixture of 500 ppm CCl4 in H2 has been used to grow heavily doped p-type GaAs by low-pressure metalorganic chemical vapor deposition with TMGa and AsH3 as the group III and V sources, respectively. Carbon acceptor concentrations between 1×1016 and 1×1019 cm-3 were obtained. In addition, abrupt carbon-doping profiles were achieved with no noticeable memory effects. Carrier concentration was studied as a function of CCl4 flow, V/III ratio, growth temperature, and growth rate using electrochemical capacitance-voltage profiling. Carbon incorporation was found to depend on CCl4 flow, V/III ratio, and growth temperature. Carbon incorporation had no dependence on the growth rate.
ACCESSION #
9831146

 

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