Deep-level transient spectroscopy (DLTS) measurements have been made to obtain the activation energy and capture cross section in Schottky diodes. Previous theories for interface state density (ISD) functions, which are derived for metal-semiconductor junctions, made approximations that were inappropriate. This paper derives improvements to the previous analysis and calculates ISD using the measured DLTS data. As for examples, Schottky diodes of Si, GaAs, and Al(x)Ga(1-x)As have been investigated with both methods. It has been found that the previously used method overestimated both the peak maximum position and peak height of the ISD.
机构:State University of New York at Buffalo, Center for Electronic and Electro-optic Materials, Department of Electrical and Computer Engineering, Amherst
SHI, ZQ
ANDERSON, WA
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机构:State University of New York at Buffalo, Center for Electronic and Electro-optic Materials, Department of Electrical and Computer Engineering, Amherst