Journal
APPLIED PHYSICS LETTERS
Volume 78, Issue 21, Pages 3283-3285Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1356724
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We have obtained ferroelectric characteristics from nonoxide (ZnxCd1-x)S (x=0.1-0.3) thin films. On the basis of x-ray photoelectron and visible-ultraviolet light absorption spectroscopy measurements, the conduction-band discontinuity at the (ZnxCd1-x)S/Si(100) interfaces is found to vary between 0.4 and 1.3 eV with a change in composition x between 0.1 and 0.9. The leakage current density, which strongly depends on the conduction-band discontinuity, is reduced to less than 10(-6) A/cm(2) at a gate voltage of 4 V. (C) 2001 American Institute of Physics.
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