DUAL/WRAP-AROUND GATE FIELD EFFECT TRANSISTOR AND ITS MANUFACTURING METHOD

    公开(公告)号:JP2002043581A

    公开(公告)日:2002-02-08

    申请号:JP2001154502

    申请日:2001-05-23

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide a dual/wrap-around gate field effect transistor particularly having a short gage length, a low off current and good performance and a method for manufacturing the same. SOLUTION: In the field effect transistor comprising gates each having a length of 10 nm or less and a conductive channel having a width maintained at 1/2 to 1/4 of the length of the gate so that the gates are disposed at least at two sides of the channel, a device having a complete depletion layer is formed without considering the off current. The above-mentioned channel is obtained by forming a groove in a minimum lithographic size, forming sidewalls in the groove and etching a gate structure in a self-alignment manner with the sidewalls. The channel is thereafter epitaxially grown from a source structure in the groove so that the source, the channel and a drain region are integrated in a single crystal structure.

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