METHOD FOR INTEGRATING METALS HAVING DIFFERENT WORK FUNCTIONS TO FOM CMOS GATES HAVING A HIGH-K GATE DIELECTRIC AND RELATED STRUCTURE
    1.
    发明申请
    METHOD FOR INTEGRATING METALS HAVING DIFFERENT WORK FUNCTIONS TO FOM CMOS GATES HAVING A HIGH-K GATE DIELECTRIC AND RELATED STRUCTURE 有权
    具有不同工作功能的金属的方法用于具有高K栅介质和相关结构的FOM CMOS栅

    公开(公告)号:US20050054149A1

    公开(公告)日:2005-03-10

    申请号:US10654689

    申请日:2003-09-04

    摘要: According to one exemplary embodiment, a method for integrating first and second metal layers on a substrate to form a dual metal NMOS gate and PMOS gate comprises depositing a dielectric layer over an NMOS region and a PMOS region of the substrate. The method further comprises depositing the first metal layer over dielectric layer. The method further comprises depositing the second metal layer over the first metal layer. The method further comprises implanting nitrogen in the NMOS region of substrate and converting a first portion of the first metal layer into a metal oxide layer and converting a second portion of the first metal layer into metal nitride layer. The method further comprises forming the NMOS gate and the PMOS gate, where the NMOS gate comprises a segment of metal nitride layer and the PMOS gate comprises a segment of the metal oxide layer.

    摘要翻译: 根据一个示例性实施例,一种用于在衬底上将第一和第二金属层集成以形成双金属NMOS栅极和PMOS栅极的方法包括在衬底的NMOS区域和PMOS区域上沉积介电层。 该方法还包括在电介质层上沉积第一金属层。 该方法还包括在第一金属层上沉积第二金属层。 该方法还包括在衬底的NMOS区域中注入氮气,并将第一金属层的第一部分转变为金属氧化物层,并将第一金属层的第二部分转换为金属氮化物层。 该方法还包括形成NMOS栅极和PMOS栅极,其中NMOS栅极包括一段金属氮化物层,PMOS栅极包括金属氧化物层的一段。

    Method for integrating a high-k gate dielectric in a transistor fabrication process
    2.
    发明申请
    Method for integrating a high-k gate dielectric in a transistor fabrication process 审中-公开
    在晶体管制造工艺中集成高k栅极电介质的方法

    公开(公告)号:US20050101147A1

    公开(公告)日:2005-05-12

    申请号:US10705347

    申请日:2003-11-08

    摘要: According to one exemplary embodiment, a method for forming a field-effect transistor on a substrate, where the substrate includes a high-k dielectric layer situated over the substrate and a gate electrode layer situated over the high-k dielectric layer, comprises a step of etching the gate electrode layer and the high-k dielectric layer to form a gate stack, where the gate stack comprises a high-k dielectric segment situated over the substrate and a gate electrode segment situated over the high-k dielectric segment. According to this exemplary embodiment, the method further comprises performing a nitridation process on the gate stack. The nitridation process can be performed by, for example, utilizing a plasma to nitridate sidewalls of the gate stack, where the plasma comprises nitrogen. The nitridation process can cause nitrogen to enter the high-k dielectric segment and form an oxygen diffusion barrier in the high-k dielectric segment, for example.

    摘要翻译: 根据一个示例性实施例,一种在衬底上形成场效应晶体管的方法,其中衬底包括位于衬底上方的高k电介质层和位于高k电介质层上方的栅电极层,包括步骤 蚀刻栅极电极层和高k电介质层以形成栅极叠层,其中栅极堆叠包括位于衬底上方的高k电介质段和位于高k电介质段上方的栅电极段。 根据该示例性实施例,该方法还包括在栅极堆叠上执行氮化处理。 氮化工艺可以通过例如利用等离子体来氮化栅堆叠的侧壁来进行,其中等离子体包括氮。 例如,氮化处理可以使氮进入高k电介质段,并在高k电介质段中形成氧扩散阻挡层。

    CMOS gates formed by integrating metals having different work functions and having a high-k gate dielectric
    4.
    发明授权
    CMOS gates formed by integrating metals having different work functions and having a high-k gate dielectric 有权
    通过集成具有不同功函数并且具有高k栅极电介质的金属形成的CMOS栅极

    公开(公告)号:US07176531B1

    公开(公告)日:2007-02-13

    申请号:US11020990

    申请日:2004-12-22

    IPC分类号: H01L29/76

    摘要: According to one exemplary embodiment, a method for integrating first and second metal layers on a substrate to form a dual metal NMOS gate and PMOS gate comprises depositing a dielectric layer over an NMOS region and a PMOS region of the substrate. The method further comprises depositing the first metal layer over dielectric layer. The method further comprises depositing the second metal layer over the first metal layer. The method further comprises implanting nitrogen in the NMOS region of substrate and converting a first portion of the first metal layer into a metal oxide layer and converting a second portion of the first metal layer into metal nitride layer. The method further comprises forming the NMOS gate and the PMOS gate, where the NMOS gate comprises a segment of metal nitride layer and the PMOS gate comprises a segment of the metal oxide layer.

    摘要翻译: 根据一个示例性实施例,一种用于在衬底上将第一和第二金属层集成以形成双金属NMOS栅极和PMOS栅极的方法包括在衬底的NMOS区域和PMOS区域上沉积介电层。 该方法还包括在电介质层上沉积第一金属层。 该方法还包括在第一金属层上沉积第二金属层。 该方法还包括在衬底的NMOS区域中注入氮气,并将第一金属层的第一部分转变为金属氧化物层,并将第一金属层的第二部分转换为金属氮化物层。 该方法还包括形成NMOS栅极和PMOS栅极,其中NMOS栅极包括金属氮化物层的一部分,PMOS栅极包括金属氧化物层的一部分。

    Field effect transistor having increased carrier mobility
    5.
    发明授权
    Field effect transistor having increased carrier mobility 有权
    场效应晶体管的载流子迁移率增加

    公开(公告)号:US07923785B2

    公开(公告)日:2011-04-12

    申请号:US10643461

    申请日:2003-08-18

    IPC分类号: H01L21/336

    摘要: According to one exemplary embodiment, a FET which is situated over a substrate, comprises a channel situated in the substrate. The FET further comprises a first gate dielectric situated over the channel, where the first gate dielectric has a first coefficient of thermal expansion. The FET further comprises a first gate electrode situated over the first gate dielectric, where the first gate electrode has a second coefficient of thermal expansion, and where the second coefficient of thermal expansion is different than the first coefficient of thermal expansion so as to cause an increase in carrier mobility in the FET. The second coefficient of thermal expansion may be greater that the first coefficient of thermal expansion, for example. The increase in carrier mobility may be caused by, for example, a tensile strain created in the channel.

    摘要翻译: 根据一个示例性实施例,位于衬底上方的FET包括位于衬底中的通道。 FET还包括位于沟道上方的第一栅极电介质,其中第一栅极电介质具有第一热膨胀系数。 FET还包括位于第一栅极电介质上方的第一栅电极,其中第一栅电极具有第二热膨胀系数,并且其中第二热膨胀系数不同于第一热膨胀系数,从而导致 增加FET中的载流子迁移率。 例如,第二热膨胀系数可以大于第一热膨胀系数。 载流子迁移率的增加可以由例如在通道中产生的拉伸应变引起。

    Method of fabricating an integrated circuit channel region
    6.
    发明授权
    Method of fabricating an integrated circuit channel region 有权
    制造集成电路通道区域的方法

    公开(公告)号:US07138302B2

    公开(公告)日:2006-11-21

    申请号:US10755763

    申请日:2004-01-12

    摘要: An exemplary embodiment relates to a method of FinFET channel structure formation. The method can include providing a compound semiconductor layer above an insulating layer, providing a trench in the compound semiconductor layer, and providing a strained semiconductor layer above the compound semiconductor layer and within the trench. The method can also include removing the strained semiconductor layer from above the compound semiconductor layer, thereby leaving the strained semiconductor layer within the trench and removing the compound semiconductor layer to leave the strained semiconductor layer and form the fin-shaped channel region.

    摘要翻译: 示例性实施例涉及FinFET沟道结构形成的方法。 该方法可以包括在绝缘层之上提供化合物半导体层,在化合物半导体层中提供沟槽,并在化合物半导体层之上和沟槽内提供应变半导体层。 该方法还可以包括从化合物半导体层上方去除应变半导体层,从而将应变半导体层留在沟槽内,并去除化合物半导体层以留下应变半导体层并形成鳍状沟道区。

    Method of fabricating a strained silicon channel FinFET
    8.
    发明申请
    Method of fabricating a strained silicon channel FinFET 有权
    制造应变硅沟道FinFET的方法

    公开(公告)号:US20050153486A1

    公开(公告)日:2005-07-14

    申请号:US10755763

    申请日:2004-01-12

    摘要: An exemplary embodiment relates to a method of FinFET channel structure formation. The method can include providing a compound semiconductor layer above an insulating layer, providing a trench in the compound semiconductor layer, and providing a strained semiconductor layer above the compound semiconductor layer and within the trench. The method can also include removing the strained semiconductor layer from above the compound semiconductor layer, thereby leaving the strained semiconductor layer within the trench and removing the compound semiconductor layer to leave the strained semiconductor layer and form the fin-shaped channel region.

    摘要翻译: 示例性实施例涉及FinFET沟道结构形成的方法。 该方法可以包括在绝缘层之上提供化合物半导体层,在化合物半导体层中提供沟槽,并在化合物半导体层之上和沟槽内提供应变半导体层。 该方法还可以包括从化合物半导体层上方去除应变半导体层,从而将应变半导体层留在沟槽内,并去除化合物半导体层以留下应变半导体层并形成鳍状沟道区。

    FinFET device incorporating strained silicon in the channel region
    10.
    发明授权
    FinFET device incorporating strained silicon in the channel region 有权
    FinFET器件在通道区域中包含应变硅

    公开(公告)号:US06800910B2

    公开(公告)日:2004-10-05

    申请号:US10335474

    申请日:2002-12-31

    IPC分类号: H01L27105

    摘要: A FinFET device employs strained silicon to enhance carrier mobility. In one method, a FinFET body is patterned from a layer of silicon germanium (SiGe) that overlies a dielectric layer. An epitaxial layer of silicon is then formed on the silicon germanium FinFET body. A strain is induced in the epitaxial silicon as a result of the different dimensionalities of intrinsic silicon and of the silicon germanium crystal lattice that serves as the template on which the epitaxial silicon is grown. Strained silicon has an increased carrier mobility compared to relaxed silicon, and as a result the epitaxial strained silicon provides increased carrier mobility in the FinFET. A higher driving current can therefore be realized in a FinFET employing a strained silicon channel layer.

    摘要翻译: FinFET器件采用应变硅来增强载流子迁移率。 在一种方法中,FinFET体从覆盖在电介质层上的硅锗层(SiGe)构图。 然后在硅锗FinFET体上形成硅的外延层。 由于本征硅和作为外延硅生长的模板的硅锗晶格的不同维度,在外延硅中引起应变。 与松弛硅相比,应变硅具有增加的载流子迁移率,结果外延应变硅在FinFET中提供增加的载流子迁移率。 因此,可以在采用应变硅沟道层的FinFET中实现更高的驱动电流。