R. Sung et Mb. Das, ON THE NONIDEAL CHARACTERISTICS OF SCHOTTKY-BARRIER-GATE DIODES IN IN0.52AL0.48AS IN(0.53)GA(0.47)AS HETEROSTRUCTURE FETS ON INP SUBSTRATES/, I.E.E.E. transactions on electron devices, 42(1), 1995, pp. 188-190
We report results of determination of the zero-field barrier heights o
f Schottky-barrier-gate-diodes in InAlAs/InGaAs heterostructure modula
tion doped FET's by exploiting their temperature dependent I-V charact
eristics. The held-emission model has been found to account for the ga
te current flow mechanism particularly at temperatures below 200 K. Us
ing this model the influence of the InAlas/InGaAs heterostructure pote
ntial barrier on the gate current has been delineated and a possible c
ause behind the current's wide-range of variability, from 10(-1) to 10
(2) A/cm(2) within 100 mV forward bias, has been suggested.