Contact structure for semiconductor devices

A semiconductor device has a substrate of one type of semiconductor material, such as silicon. A contact structure is formed on the substrate, and the contact structure is formed of a compound of a metal and a second type of semiconductor material, such as germanium. The contact structure according...

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Hauptverfasser: CHI DONG Z, CHUA CHEE T, TAN CHENG CHEH D
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creator CHI DONG Z
CHUA CHEE T
TAN CHENG CHEH D
description A semiconductor device has a substrate of one type of semiconductor material, such as silicon. A contact structure is formed on the substrate, and the contact structure is formed of a compound of a metal and a second type of semiconductor material, such as germanium. The contact structure according to embodiments of the present invention include a semiconductor material which a different semiconductor material forming the substrate. Higher or lower barrier height is obtained by embodiment of the invention. A method for forming a contact structure in which a substrate of one type of semiconductor material is provided. A layer of another different semiconductor material is formed on the substrate. A layer of metal is then formed on the layer of the other different semiconductor material. Upon annealing, a contact structure is formed on the substrate, which is a compound of the metal and the other different semiconductor material, onto the substrate.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
title Contact structure for semiconductor devices
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