Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1949730
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High quality n-ZnO films on commercial p-type 6H-SiC substrates have been grown by plasma-assisted molecular-beam epitaxy, and n-ZnO/p-SiC heterojunction mesa structures have been fabricated. Current-voltage characteristics of the structures had a very good rectifying diode-like behavior with a leakage current less than 2x10(-4) A/cm(2) at -10 V, a breakdown voltage greater than 20 V, a forward turn on voltage of similar to 5 V, and a forward current of 2 A/cm(2) at 8 V. Photosensitivity of the diodes was studied at room temperature and a photoresponsivity of as high as 0.045 A/W at -7.5 V reverse bias was observed for photon energies higher than 3.0 eV. (c) 2005 American Institute of Physics.
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