ENHANCED CUTOFF FREQUENCY SILICON GERMANIUM TRANSISTOR

    公开(公告)号:AU2002305254A1

    公开(公告)日:2003-11-10

    申请号:AU2002305254

    申请日:2002-04-26

    Applicant: IBM

    Abstract: A bipolar transistor for a small signal amplifier that has improved Early voltages, and hence enhanced cutoff frequency. The SiGe layer (14) has a thickness (t) and a Ge content that is greater than the stability limit. The misfit dislocations do not create appreciable charge trapping sites, and do not extend into the overlying base/collector junction, such that performance is improved without yield degradation.

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