DocumentCode :
1105988
Title :
Backgating characteristics of MODFET structures
Author :
Ezis, A. ; Langer, D.W.
Author_Institution :
Universal Energy Systems, Inc., Dayton, OH
Volume :
6
Issue :
10
fYear :
1985
fDate :
10/1/1985 12:00:00 AM
Firstpage :
494
Lastpage :
496
Abstract :
Significant backgating in mesa-isolated AlGaAs/GaAs MODFET structures is reported. Results are presented on the influence of backgate potential on the electrical characteristics of enhancement-mode MODFET´s fabricated on MBE grown material. An observed zero threshold voltage for the onset of backgating is attributed to a high level of current leakage in the high-purity GaAs buffer layer. Transconductance and capacitance-voltage measurements on MODFET´s show that the backgate potential influences primarily the electrical properties of the 2-D electron gas channel and the adjacent AlGaAs layer.
Keywords :
Buffer layers; Capacitance measurement; Capacitance-voltage characteristics; Electric potential; Electric variables; Gallium arsenide; HEMTs; MODFETs; Threshold voltage; Transconductance;
fLanguage :
English
Journal_Title :
Electron Device Letters, IEEE
Publisher :
ieee
ISSN :
0741-3106
Type :
jour
DOI :
10.1109/EDL.1985.26206
Filename :
1485359
Link To Document :
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