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    • 10. 发明申请
    • Semiconductor Device and Method of Manufacturing such a Device
    • 半导体装置及其制造方法
    • US20090114950A1
    • 2009-05-07
    • US11597533
    • 2005-05-19
    • Prabhat AgarwalJan Willem SlotboomGerben Doornbos
    • Prabhat AgarwalJan Willem SlotboomGerben Doornbos
    • H01L21/336H01L21/8249H01L21/8232H01L29/78H01L29/80H01L21/8234H01L21/8248
    • H01L21/8249
    • The invention relates to a semiconductor device (10) comprising a substrate (11) and a semiconductor body (1) of silicon having a semiconductor layer structure comprising, in succession, a first and a second semiconductor layer (2, 3), and having a surface region of a first conductivity type which is provided with a field effect transistor (M) with a channel of a second conductivity type, opposite to the first conductivity type, wherein the surface region is provided with source and drain regions (4A, 4B) of the second conductivity type for the field effect transistor (M) and with—interposed between said source and drain regions—a channel region (3A) with a lower doping concentration which forms part of the second semiconductor layer (3) and with a buried first-conductivity-type semiconductor region (2A), buried below the channel region (3A), with a doping concentration that is much higher than that of the channel region (3A) and which forms part of the first semiconductor layer (2). According to the invention, the semiconductor body (1) is provided not only with the field effect transistor (M) but also with a bipolar transistor (B) with emitter, base and collector regions (5A, 5B, 5C) of respectively the second, the first and the second conductivity type, and the emitter region (5A) is formed in the second semiconductor layer (3) and the base region (5B) is formed in the first semiconductor layer (2). In this way a Bi(C)MOS IC (10) is obtained which is very suitable for high-frequency applications and which is easy to manufacture using a method according to the invention. Preferably the first semiconductor layer (2) comprises Si—Ge and is delta-doped, whereas the second semiconductor layer (3) comprises strained Si.
    • 本发明涉及一种半导体器件(10),它包括具有半导体层结构的硅衬底(12)和半导体本体(1),半导体层结构依次包括第一和第二半导体层(2,3),并且具有 具有与第一导电类型相反的具有第二导电类型的沟道的场效应晶体管(M)的第一导电类型的表面区域,其中所述表面区域设置有源极和漏极区域(4A,4B) )和用于场效应晶体管(M)的第二导电类型,并且插入在所述源极和漏极区之间 - 具有较低掺杂浓度的沟道区(3A),其形成第二半导体层(3)的一部分,并且具有 埋入第一导电型半导体区域(2A),其掺杂在沟道区域(3A)的下方,掺杂浓度比沟道区域(3A)的掺杂浓度高得多,并且形成第一半导体层(2)的一部分, 。 根据本发明,半导体本体(1)不仅设置有场效应晶体管(M),而且还具有双极晶体管(B),发射极,基极和集电极区域(5A,5B,5C)分别为第二 第一和第二导电类型和发射极区域(5A)形成在第二半导体层(3)中,并且基极区域(5B)形成在第一半导体层(2)中。 以这种方式获得了非常适合于高频应用并且易于使用根据本发明的方法制造的Bi(C)MOS IC(10)。 优选地,第一半导体层(2)包括Si-Ge并且是δ掺杂的,而第二半导体层(3)包括应变Si。