Dual liner silicide
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United States of America Patent
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Feb 7, 2017
Issued Date -
N/A
app pub date -
Jun 16, 2015
filing date -
Jun 16, 2015
priority date (Note) -
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Abstract
A method for fabricating a dual silicide device includes growing source and drain (S/D) regions for an N-type device, forming a protection layer over a gate structure and the S/D regions of the N-type device and growing S/D regions for a P-type device. A first dielectric layer is conformally deposited and portions removed to expose the S/D regions. Exposed S/D regions for the P-type device are silicided to form a liner. A second dielectric layer is conformally deposited. A dielectric fill is formed over the second dielectric layer. Contact holes are opened through the second dielectric layer to expose the liner for the P-type device and expose the protection layer for the N-type device. The S/D regions for the N-type device are exposed by opening the protection layer. Exposed S/D regions adjacent to the gate structure are silicided to form a liner for the N-type device. Contacts are formed.
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