Study of the Correlation between Low-Frequency Noise and the Current-Voltage Characteristic of a GaAs Schottky-Barrier Diode

Author: Bozhkov V.G.   Tabakaeva T.M.   Usol'tzev A.A.  

Publisher: Springer Publishing Company

ISSN: 0033-8443

Source: Radiophysics and Quantum Electronics, Vol.45, Iss.7, 2002-07, pp. : 554-560

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Abstract

Correlation between low-frequency (1/f) noise and the current-voltage (I-V) characteristic of a beam-lead GaAs Schottky-barrier diode (SBD) is studied. It is shown that the ideality factor n of the I-V characteristic (and its increase) in the current range 10-4-10-3 A has the maximum correlation (the correlation coefficient kcor>0.9) with low-frequenvy noise measured at the same currents at frequencies 8-10 KHz, i.e., n is most sensitive to the series resistance of an SBD. At the same time, the values of n in the 10-6-10-5 A range usually do not exceed 1.1 and do not show correlation with low-frequency noise. The correlation is explained predominantly by the barrier-height nonuniformity over the Schottky-barrier contact.