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    • 10. 发明授权
    • Bipolar transistor and manufacting method thereof
    • 双极晶体管及其制造方法
    • US06482710B2
    • 2002-11-19
    • US09811559
    • 2001-03-20
    • Katsuya OdaEiji OhueMasao KondoKatsuyoshi WashioMasamichi TanabeHiromi Shimamoto
    • Katsuya OdaEiji OhueMasao KondoKatsuyoshi WashioMasamichi TanabeHiromi Shimamoto
    • H01L21331
    • H01L29/66287H01L29/66242H01L29/732H01L29/7378
    • A bipolar transistor according to the invention is provided with structure that an intrinsic base made of single crystal Si—Ge and a base leading-out electrode are connected via a link base made of polycrystal Si—Ge by doping at high concentration, further, a part immediately under the intrinsic base has the same conductive type as that of a collector and in a peripheral part, a single crystal Si—Ge layer having the same conductive type as that of a base is provided between the intrinsic base and a collector layer. Hereby, the reduction of the resistance of the link base between the intrinsic base and the base leading-out electrode and the reduction of capacitance between the collector and the base are simultaneously realized, and a self-aligned bipolar transistor wherein capacitance between an emitter and the base and capacitance between the collector and the base are respectively small, power consumption is small and high speed operation is enabled is acquired.
    • 根据本发明的双极晶体管具有以下结构:由单晶Si-Ge构成的本征基极和基极引出电极通过高浓度掺杂的由多晶Si-Ge制成的连接基底连接,此外, 在本征基底之下的部分具有与集电体相同的导电类型,并且在外围部分中,在本征基极和集电极层之间设置具有与基底相同的导电类型的单晶Si-Ge层。 因此,同时实现本征基极与基极引出电极之间的基极的电阻的降低和集电极与基极之间的电容的减小,以及自对准双极晶体管,其中发射极和 集电极和基极之间的基极和电容分别小,功耗小,获得高速运行。