Browsing by Author "Li, H."

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Electrical characteristics of Ni Ohmic contact on n-type GeSn
(2014-06-16)
Li, H.
;
Cheng, H. H.
;
Lee, L. C.
;
Lee, C. P.
;
Su, L. H.
We report an investigation of the electrical and material characteristics of Ni on an n-type GeSn film under thermal annealing. The current-voltage traces measured with the transmission line method are linear for a wide range of annealing temperatures. The specific contact resistivity was found to decrease with increasing annealing temperature, followed by an increase as the annealing temperature further increased, with a minimum value at an annealing temperature of 350 degrees C. The material characteristics at the interface layer were measured by energy-dispersive spectrometer, showing that an atomic ratio of (Ni)/(GeSn) = 1:1 yields the lowest specific contact resistivity. (C) 2014 AIP Publishing LLC.