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Effects of the epitaxial layer thickness on the noise properties of Schottky barrier diodes
Gomila Lluch, Gabriel; Bulashenko, Oleg
Universitat de Barcelona
An analytical theory to describe the combined effects of the epitaxial layer thickness and the ohmic contact on the noise properties of Schottky barrier diodes is presented. The theory, which provides information on both the local and the global noise properties, takes into account the finite size of the epitaxial layer and the effects of the back ohmic contact, and applies to the whole range of applied bias. It is shown that by scaling down the epitaxial layer thickness, the current regime in which the noise temperature displays a shot-noise-like behavior increases at the cost of reducing the current range in which the thermal-noise-like behavior dominates. This improvement in noise temperature is limited by the effects of the ohmic contact, which appear for large currents. The theory is formulated on general trends, allowing its application to the noise analysis of other semiconductor devices operating under strongly inhomogeneous distributions of the electric field and charge concentrations.
Microelectrònica
Matèria condensada
Microelectronics
Condensed matter
(c) American Institute of Physics, 1999
Artículo
American Institute of Physics
         

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