期刊
APPLIED PHYSICS LETTERS
卷 81, 期 20, 页码 3852-3854出版社
AMER INST PHYSICS
DOI: 10.1063/1.1521251
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A generally applicable model is presented to describe the potential barrier shape in ultrasmall Schottky diodes. It is shown that for diodes smaller than a characteristic length l(c) (associated with the semiconductor doping level) the conventional description no longer holds. For such small diodes the Schottky barrier thickness decreases with decreasing diode size. As a consequence, the resistance of the diode is strongly reduced, due to enhanced tunneling. Without the necessity of assuming a reduced (non-bulk) Schottky barrier height, this effect provides an explanation for several experimental observations of enhanced conduction in small Schottky diodes. (C) 2002 American Institute of Physics.
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