TITLE

Current drift mechanism in In0.53Ga0.47As depletion mode metal-insulator field-effect transistors

AUTHOR(S)
Taillepied, M.; Gourrier, S.
PUB. DATE
April 1986
SOURCE
Applied Physics Letters;4/14/1986, Vol. 48 Issue 15, p978
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A study of current drift phenomena of InGaAs depletion mode metal-insulator field-effect transistors fabricated with plasma enhanced chemical vapor deposited Si3N4 is reported for the first time. The data indicate that the current varies logarithmically versus time and that the capture mechanism does not depend on temperature. A strong correlation is demonstrated between the amplitude of the hysteresis of C(V) curves measured on metal-insulator-semiconductor devices and the total oxide thickness located between the deposited dielectric film and the InGaAs layer. This behavior suggests that states situated in this native oxide layer are responsible for the current drift. Moreover, these states are energetically distributed in the band gap of InGaAs.
ACCESSION #
9819567

 

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