N-CHANNEL MOSFETS COMPRISING DUAL STRESSORS, AND METHODS FOR FORMING THE SAME
    4.
    发明申请
    N-CHANNEL MOSFETS COMPRISING DUAL STRESSORS, AND METHODS FOR FORMING THE SAME 审中-公开
    包含双重压力机的N沟道MOSFET及其形成方法

    公开(公告)号:WO2007140130A3

    公开(公告)日:2009-04-09

    申请号:PCT/US2007069100

    申请日:2007-05-17

    Abstract: The present invention relates to a semiconductor device comprising at least one n-channel field effect transistor (n-FET). Specifically, the n-FET comprises first and second patterned stressor layers that both contain a carbon-substituted and tensilely stressed single crystal semiconductor. The first patterned stressor layer has a first carbon concentration and is located in source and drain (S/D) extension regions of the n-FET at a first depth. The second patterned stressor layer has a second, higher carbon concentration and is located in S/D regions of the n-FET at a second, deeper depth. Such an n-FET with the first and second patterned stressor layers of different carbon concentration and different depths provide improved stress profile for enhancing electron mobility in the channel region of the n-FET.

    Abstract translation: 本发明涉及包括至少一个n沟道场效应晶体管(n-FET)的半导体器件。 具体地说,n-FET包括第一和第二图案应力层,它们都包含碳取代和拉伸应力单晶半导体。 第一图案应力层具有第一碳浓度并且位于第一深度处的n-FET的源极和漏极(S / D)延伸区域中。 第二图案应力层具有第二较高的碳浓度,并且位于第二较深深度处的n-FET的S / D区中。 这种具有不同碳浓度和不同深度的第一和第二图案应力层的n-FET提供了改善的应力分布,用于增强n-FET的沟道区域中的电子迁移率。

    8.
    发明专利
    未知

    公开(公告)号:AT521089T

    公开(公告)日:2011-09-15

    申请号:AT07797521

    申请日:2007-05-17

    Applicant: IBM

    Abstract: The present invention relates to a semiconductor device comprising at least one n-channel field effect transistor (n-FET). Specifically, the n-FET comprises first and second patterned stressor layers that both contain a carbon-substituted and tensilely stressed single crystal semiconductor. The first patterned stressor layer has a first carbon concentration and is located in source and drain (S/D) extension regions of the n-FET at a first depth. The second patterned stressor layer has a second, higher carbon concentration and is located in S/D regions of the n-FET at a second, deeper depth. Such an n-FET with the first and second patterned stressor layers of different carbon concentration and different depths provide improved stress profile for enhancing electron mobility in the channel region of the n-FET.

    VERTICAL BIPOLAR TRANSISTOR
    9.
    发明专利

    公开(公告)号:CA1290079C

    公开(公告)日:1991-10-01

    申请号:CA601597

    申请日:1989-06-02

    Applicant: IBM

    Abstract: VERTICAL BIPOLAR TRANSISTOR A Compressed vertical bipolar transistor configuration that eliminates one side of the standard symmetrical base contact, while also eliminating the requirement for a collector contact reach-thru. The bipolar transistor comprises: a collector layer;a base layer disposed over the collector layer; an emitter layer disposed over the base layer; a first sidewall insulating layer disposed adjacent to and in contact with one side of the emitter layer, the base layer, and at least a portion of the collector layer; a second sidewall insulating layer disposed adjacent to and in contact with another side of the emitter layer and at least a portion of the base layer; and a base contact extension layer formed from heavily doped semiconductor material of the same conductivity type as the base layer, said base contact extension layer being in contact with and extending laterally from another side of the base layer. The structure further includes a base contact interconnect disposed on a surface of the base contact extension layer and; a collector contact extension layer formed from doped semiconductor material with the same conductivity type as the collector layer, with the collector contact extension layer being in contact with the collector layer and extending laterally from or below the one side thereof; and a collector contact interconnect disposed on a surface of the collector contact extension layer and separated from said emitter layer by only one or more insulating layers. FI9-87-027

    FIELD-EFFECT-TRANSISTOR WITH ASYMMETRICAL STRUCTURE

    公开(公告)号:CA2011233A1

    公开(公告)日:1990-12-09

    申请号:CA2011233

    申请日:1990-03-01

    Applicant: IBM

    Abstract: FIELD-EFFECT-TRANSISTOR WITH ASYMMETRICAL STRUCTURE A field effect transistor of asymmetrical structure comprises: a semiconductor substrate of first conductivity type; source and drain regions of second conductivity type disposed in a surface of the substrate and spaced apart by a channel region; and a single, lightly doped extension of the drain region into the channel, the extension being of the second conductivity type and of a lower dopant concentration than the drain region. The transistor can further beneficially comprise a halo region of the first conductivity type in the substrate generally surrounding only the source region.

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