TITLE

Deposition of amorphous SiNxH films on InP in the presence of AsH3

AUTHOR(S)
Commère, B.; Habrard, M. C.; Krawczyk, S. K.; Bruyère, J. C.
PUB. DATE
December 1987
SOURCE
Applied Physics Letters;12/21/1987, Vol. 51 Issue 25, p2142
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Hydrogenated amorphous silicon nitride (a-SiNxH) films have been deposited on InP substrates by the low-temperature (185 °C) plasma enhanced chemical vapor deposition technique in order to realize metal-insulator-semiconductor capacitors. It has been found that the electronic properties of the InP-insulator interface are greatly improved if the insulator deposition is carried out in the presence of AsH3 during the first stage of the process (interface state density in the range of a few 1011 eV-1 cm-2 in the upper part of the gap). The deposited films exhibit very high resistivity (1017 Ω cm) and high breakdown voltage (3×106 V/cm). In similar conditions, no beneficial effect of PH3 during the deposition has been noticed.
ACCESSION #
9825316

 

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