Methods for fabricating a dual-gated semiconductor-on-insulator field
effect transistor
    41.
    发明授权
    Methods for fabricating a dual-gated semiconductor-on-insulator field effect transistor 失效
    用于制造绝缘体上双栅极场效应晶体管的方法

    公开(公告)号:US5273921A

    公开(公告)日:1993-12-28

    申请号:US815121

    申请日:1991-12-27

    摘要: A method for forming a dual-gated Semiconductor-On-Insulator (SOI) field effect transistor for integrated circuits includes the formation of a gate/oxide/channel/oxide/gate stack on top of an insulating layer. The process begins with the formation of a first gate electrode and first oxide layer on an insulating layer. Then, a seed hole in the insulating layer is formed exposing the underlying substrate. This is followed by the epitaxial lateral overgrowth (ELO) of monocrystalline silicon, for example, from the seed hole to on top of the first oxide layer. This monocrystalline layer forms the device channel. A second oxide and second gate electrode layer are then grown and deposited, respectively. Subsequent etch steps employing sidewall spacers are then employed to form a multilayered stack having self-aligned first and second gate electrodes. Sidewall seed holes are then used to epitaxially grow monocrystalline source and drain regions from the channel. In-situ doping can be provided to form a lightly doped source (LDS) and drain (LDD) structure with vertically displaced source and drain contacts.

    摘要翻译: 用于形成用于集成电路的双门控半导体绝缘体(SOI)场效应晶体管的方法包括在绝缘层顶部形成栅极/氧化物/沟道/氧化物/栅极堆叠。 该过程开始于在绝缘层上形成第一栅电极和第一氧化物层。 然后,形成绝缘层中的种子孔,暴露下面的衬底。 之后是单晶硅的外延横向过度生长(ELO),例如从第一氧化物层的种子孔到顶部。 该单晶层形成器件沟道。 然后分别生长和沉积第二氧化物和第二栅极电极层。 随后使用采用侧壁间隔物的后续蚀刻步骤形成具有自对准的第一和第二栅电极的多层堆叠。 然后将侧壁孔用于从通道外延生长单晶源极和漏极区域。 可以提供原位掺杂以形成具有垂直移位的源极和漏极触点的轻掺杂源(LDS)和漏极(LDD)结构。

    Method and apparatus for mobility enhancement in a semiconductor device
    45.
    发明授权
    Method and apparatus for mobility enhancement in a semiconductor device 有权
    用于半导体器件中的移动性增强的方法和装置

    公开(公告)号:US07872311B2

    公开(公告)日:2011-01-18

    申请号:US11857122

    申请日:2007-09-18

    IPC分类号: H01L29/76

    摘要: A method and apparatus is presented that provides mobility enhancement in the channel region of a transistor. In one embodiment, a channel region (18) is formed over a substrate that is bi-axially stressed. Source (30) and drain (32) regions are formed over the substrate. The source and drain regions provide an additional uni-axial stress to the bi-axially stressed channel region. The uni-axial stress and the bi-axially stress are both compressive for P-channel transistors and tensile for N-channel transistors. Both transistor types can be included on the same integrated circuit.

    摘要翻译: 提出了一种在晶体管的沟道区域中提供迁移率增强的方法和装置。 在一个实施例中,沟槽区域(18)形成在双轴向应力的衬底上。 源极(30)和漏极(32)区域形成在衬底上。 源极和漏极区域向双向应力通道区域提供额外的单轴应力。 单向应力和双轴向应力对于P沟道晶体管是压缩的,对于N沟道晶体管是拉伸的。 两种晶体管类型都可以包含在同一集成电路中。

    Process for forming an electronic device including semiconductor fins
    46.
    发明授权
    Process for forming an electronic device including semiconductor fins 有权
    用于形成包括半导体鳍片的电子器件的工艺

    公开(公告)号:US07456055B2

    公开(公告)日:2008-11-25

    申请号:US11375890

    申请日:2006-03-15

    IPC分类号: H01L21/00

    摘要: An electronic device can include a base layer, a semiconductor layer, and a first semiconductor fin spaced apart from and overlying a semiconductor layer. In a particular embodiment, a second semiconductor fin can include a portion of the semiconductor layer. In another aspect, a process of forming an electronic device can include providing a workpiece that includes a base layer, a first semiconductor layer that overlies and is spaced apart from a base layer, a second semiconductor layer that overlies, and an insulating layer lying between the first semiconductor layer and the second semiconductor layer. The process can also include removing a portion of the second semiconductor layer to form a first semiconductor fin, and forming a conductive member overlying the first semiconductor fin.

    摘要翻译: 电子器件可以包括基极层,半导体层和与半导体层间隔开并覆盖半导体层的第一半导体鳍片。 在特定实施例中,第二半导体鳍片可以包括半导体层的一部分。 另一方面,形成电子器件的工艺可以包括提供一种工件,其包括基底层,覆盖并与基底层间隔开的第一半导体层,覆盖在第二半导体层之间的绝缘层和位于第二半导体层之间的绝缘层 第一半导体层和第二半导体层。 该工艺还可以包括去除第二半导体层的一部分以形成第一半导体鳍片,以及形成覆盖在第一半导体鳍片上的导电构件。

    Semiconductor device with multiple semiconductor layers
    47.
    发明申请
    Semiconductor device with multiple semiconductor layers 审中-公开
    具有多个半导体层的半导体器件

    公开(公告)号:US20050275018A1

    公开(公告)日:2005-12-15

    申请号:US10865351

    申请日:2004-06-10

    摘要: A semiconductor device structure uses two semiconductor layers to separately optimize N and P channel transistor carrier mobility. The conduction characteristic for determining this is a combination of material type of the semiconductor, crystal plane, orientation, and strain. Hole mobility is improved in P channel transistors when the conduction characteristic is characterized by the semiconductor material being silicon germanium, the strain being compressive, the crystal plane being (100), and the orientation being . In the alternative, the crystal plane can be (111) and the orientation in such case is unimportant. The preferred substrate for N-type conduction is different from the preferred (or optimum) substrate for P-type conduction. The N channel transistors preferably have tensile strain, silicon semiconductor material, and a (100) plane. With the separate semiconductor layers, both the N and P channel transistors can be optimized for carrier mobility.

    摘要翻译: 半导体器件结构使用两个半导体层来分别优化N沟道晶体管和P沟道晶体管的载流子迁移率。 用于确定的导电特性是半导体的材料类型,晶面,取向和应变的组合。 当导电特性的特征在于半导体材料为硅锗时,p型沟道晶体管的空穴迁移率得到改善,应变为压缩,晶面为(100),取向为100。 或者,晶面可以是(111),在这种情况下的取向是不重要的。 用于N型导电的优选衬底不同于用于P型导电的优选(或最佳)衬底。 N沟道晶体管优选具有拉伸应变,硅半导体材料和(100)平面。 通过分开的半导体层,N沟道晶体管和P沟道晶体管都可以优化载流子迁移率。

    Dual-gated semiconductor-on-insulator field effect transistor
    49.
    发明授权
    Dual-gated semiconductor-on-insulator field effect transistor 失效
    双栅绝缘子场效应晶体管

    公开(公告)号:US5349228A

    公开(公告)日:1994-09-20

    申请号:US163322

    申请日:1993-12-07

    摘要: A method for forming a dual-gated Semiconductor-On-Insulator (SOI) field effect transistor for integrated circuits includes the formation of a gate/oxide/channel/oxide/gate stack on top of an insulating layer. The process begins with the formation of a first gate electrode and first oxide layer on an insulating layer. Then, a seed hole in the insulating layer is formed exposing the underlying substrate. This is followed by the epitaxial lateral overgrowth (ELO) of monocrystalline silicon, for example, from the seed hole to on top of the first oxide layer. This monocrystalline layer forms the device channel. A second oxide and second gate electrode layer are then grown and deposited, respectively. Subsequent etch steps employing sidewall spacers are then employed to form a multilayered stack having self-aligned first and second gate electrodes. Sidewall seed holes are then used to epitaxially grow monocrystalline source and drain regions from the channel. In-situ doping can be provided to form a lightly doped source (LDS) and drain (LDD) structure with vertically displaced source and drain contacts.

    摘要翻译: 用于形成用于集成电路的双门控半导体绝缘体(SOI)场效应晶体管的方法包括在绝缘层顶部形成栅极/氧化物/沟道/氧化物/栅极堆叠。 该过程开始于在绝缘层上形成第一栅电极和第一氧化物层。 然后,形成绝缘层中的种子孔,暴露下面的衬底。 之后是单晶硅的外延横向过度生长(ELO),例如从第一氧化物层的种子孔到顶部。 该单晶层形成器件沟道。 然后分别生长和沉积第二氧化物和第二栅极电极层。 随后使用采用侧壁间隔物的后续蚀刻步骤形成具有自对准的第一和第二栅电极的多层堆叠。 然后将侧壁孔用于从通道外延生长单晶源极和漏极区域。 可以提供原位掺杂以形成具有垂直移位的源极和漏极触点的轻掺杂源(LDS)和漏极(LDD)结构。