Monolithic integration of silicon and group III-V devices
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United States of America Patent
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Mar 17, 2015
Grant Date -
Sep 1, 2011
app pub date -
Dec 3, 2010
filing date -
Mar 1, 2010
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Abstract
Disclosed is a monolithically integrated silicon and group III-V device that includes a group III-V transistor formed in a III-V semiconductor body disposed over a silicon substrate. At least one via extends through the III-V semiconductor body to couple at least one terminal of the group III-V transistor to a silicon device formed in the silicon substrate. The silicon device can be a Schottky diode, and the group III-V transistor can be a GaN HEMT. In one embodiment an anode of the Schottky diode is formed in the silicon substrate. In another embodiment, the anode of the Schottky diode is formed in a lightly doped epitaxial silicon layer atop the silicon substrate. In one embodiment a parallel combination of the Schottky diode and the group III-V transistor is formed, while in another embodiment is series combination is formed.
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