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    Method of creating asymmetric field-effect-transistors
    11.
    发明授权
    Method of creating asymmetric field-effect-transistors 有权
    制造不对称场效应晶体管的方法

    公开(公告)号：US08017483B2

    公开(公告)日：2011-09-13

    申请号：US12493549

    申请日：2009-06-29

    申请人： Gregory G. Freeman ,  Shreesh Narasimha ,  Ning Su ,  Hasan M. Nayfeh ,  Nivo Rovedo ,  Werner A. Rausch ,  Jian Yu

    发明人： Gregory G. Freeman ,  Shreesh Narasimha ,  Ning Su ,  Hasan M. Nayfeh ,  Nivo Rovedo ,  Werner A. Rausch ,  Jian Yu

    IPC分类号： H01L21/336

    CPC分类号： H01L21/823425 ,  H01L21/26586 ,  H01L21/823412 ,  H01L29/66492 ,  H01L29/66659

    摘要： The present invention provides a method of forming asymmetric field-effect-transistors. The method includes forming at least a first and a second gate-mask stack on top of a semiconductor substrate, wherein the first and second gate-mask stacks include at least, respectively, a first and a second gate conductor of a first and a second transistor and have, respectively, a top surface, a first side, and a second side with the second side being opposite to the first side; performing a first halo implantation from the first side of the first and second gate-mask stacks at a first angle while applying the first gate-mask stack in preventing the first halo implantation from reaching a first source/drain region of the second transistor, wherein the first angle is equal to or larger than a predetermined value; and performing a second halo implantation from the second side of the first and second gate-mask stacks at a second angle, thereby creating halo implant in a second source/drain region of the second transistor, wherein the first and second angles are measured against a normal to the substrate.

    摘要翻译： 本发明提供了形成非对称场效应晶体管的方法。 该方法包括在半导体衬底的顶部上形成至少第一和第二栅极掩模叠层，其中第一和第二栅极掩模叠层至少分别包括第一和第二栅极掩模叠层的第一和第二栅极导体 分别具有顶表面，第一侧和第二侧，第二侧与第一侧相对; 以第一角度从第一和第二栅极掩模叠层的第一侧进行第一光晕注入，同时施加第一栅极掩模叠层以防止第一光晕注入到达第二晶体管的第一源极/漏极区域，其中 第一角度等于或大于预定值; 以及以第二角度从所述第一和第二栅极掩模叠层的第二侧执行第二光晕注入，从而在所述第二晶体管的第二源极/漏极区域中产生晕轮注入，其中所述第一和第二角度是针对 与基底垂直。

    High-performance CMOS SOI devices on hybrid crystal-oriented substrates
    13.
    发明授权
    High-performance CMOS SOI devices on hybrid crystal-oriented substrates 失效
    高性能CMOS SOI器件在混合晶体取向衬底上

    公开(公告)号：US07713807B2

    公开(公告)日：2010-05-11

    申请号：US11958877

    申请日：2007-12-18

    申请人： Bruce B. Doris ,  Kathryn W. Guarini ,  Meikei Ieong ,  Shreesh Narasimha ,  Kern Rim ,  Jeffrey W. Sleight ,  Min Yang

    发明人： Bruce B. Doris ,  Kathryn W. Guarini ,  Meikei Ieong ,  Shreesh Narasimha ,  Kern Rim ,  Jeffrey W. Sleight ,  Min Yang

    IPC分类号： H01L21/8238

    CPC分类号： H01L21/76275 ,  H01L21/823807 ,  H01L21/84

    摘要： An integrated semiconductor structure containing at least one device formed upon a first crystallographic surface that is optimal for that device, while another device is formed upon a second different crystallographic surface that is optimal for the other device is provided. The method of forming the integrated structure includes providing a bonded substrate including at least a first semiconductor layer of a first crystallographic orientation and a second semiconductor layer of a second different crystallographic orientation. A portion of the bonded substrate is protected to define a first device area, while another portion of the bonded substrate is unprotected. The unprotected portion of the bonded substrate is then etched to expose a surface of the second semiconductor layer and a semiconductor material is regrown on the exposed surface. Following planarization, a first semiconductor device is formed in the first device region and a second semiconductor device is formed on the regrown material.

    摘要翻译： 提供包含至少一个器件的集成半导体结构，所述器件形成在对于该器件最佳的第一晶体表面上，而另一器件形成在对于另一器件最佳的第二不同晶体表面上。 形成集成结构的方法包括提供包括至少第一晶体取向的第一半导体层和第二不同晶体取向的第二半导体层的键合衬底。 键合衬底的一部分被保护以限定第一器件区域，而键合衬底的另一部分是未受保护的。 然后蚀刻键合衬底的未保护部分以暴露第二半导体层的表面，并将半导体材料重新生长在暴露表面上。 在平坦化之后，在第一器件区域中形成第一半导体器件，并且在再生长材料上形成第二半导体器件。

    METHOD OF REDUCING EMBEDDED SIGE LOSS IN SEMICONDUCTOR DEVICE MANUFACTURING
    14.
    发明申请
    METHOD OF REDUCING EMBEDDED SIGE LOSS IN SEMICONDUCTOR DEVICE MANUFACTURING 有权
    减少半导体器件制造中嵌入信号损失的方法

    公开(公告)号：US20090148988A1

    公开(公告)日：2009-06-11

    申请号：US11950572

    申请日：2007-12-05

    申请人： Sameer Jain ,  Shreesh Narasimha ,  Karen A. Nummy ,  Viorel Ontalus ,  Jang H. Sim

    发明人： Sameer Jain ,  Shreesh Narasimha ,  Karen A. Nummy ,  Viorel Ontalus ,  Jang H. Sim

    IPC分类号： H01L21/8238

    CPC分类号： H01L21/823807 ,  H01L21/823864 ,  H01L29/165 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/7848 ,  Y10S257/90

    摘要： Embodiments of the invention provide a method of forming embedded silicon germanium (eSiGe) in source and drain regions of a p-type field-effect-transistor (pFET) through a disposable spacer process; depositing a gap-filling layer directly on the eSiGe in the source and drain regions in a first process; depositing a layer of offset spacer material on top of the gap-filling layer in a second process different from the first process; etching the offset spacer material and the gap-filling layer, thus forming a set of offset spacers and exposing the eSiGe in the source and drain regions of the pFET; and finishing formation of the pFET.

    摘要翻译： 本发明的实施例提供了通过一次性间隔物工艺在p型场效应晶体管（pFET）的源区和漏区中形成嵌入硅锗（eSiGe）的方法; 在第一过程中在源极和漏极区域中的eSiGe上直接沉积间隙填充层; 在与第一工艺不同的第二工艺中，在间隙填充层的顶部上沉积一层偏移间隔物材料; 蚀刻偏移间隔物材料和间隙填充层，从而形成一组偏移间隔物并暴露p​​FET的源区和漏区中的eSiGe; 并完成pFET的形成。

    Curved FINFETs
    15.
    发明授权
    Curved FINFETs 有权
    弯曲的FINFET

    公开(公告)号：US07538391B2

    公开(公告)日：2009-05-26

    申请号：US11621228

    申请日：2007-01-09

    申请人： Dureseti Chidambarrao ,  Shreesh Narasimha ,  Edward J. Nowak ,  John J. Pekarik ,  Jeffrey W. Sleight ,  Richard Q. Williams

    发明人： Dureseti Chidambarrao ,  Shreesh Narasimha ,  Edward J. Nowak ,  John J. Pekarik ,  Jeffrey W. Sleight ,  Richard Q. Williams

    IPC分类号： H01L29/78 ,  H01L21/336

    CPC分类号： H01L29/785 ,  H01L29/0649 ,  H01L29/66795 ,  H01L29/7843

    摘要： A method of forming a transistor patterns a semiconductor fin on a substrate, such that the fin extends from the substrate. Then, the method forms a gate conductor over a central portion of the fin, leaving end portions of the fin exposed. Next, the end portions of the fin are doped with at least one impurity to leave the central portion of the fin as a semiconductor and form the end portions of the fin as conductors. The end portions of the fin are undercut to disconnect the end portions of the fin from the substrate, such that the fin is connected to the substrate along a central portion and is disconnected from the substrate along the end portions and that the end portions are free to move and the central portion is not free to move. A straining layer is formed on a first side of the fin and the straining layer imparts physical pressure on the fin such that the end portions are permanently moved away from a straight-line orientation with the central portion after the forming of the straining layer. Thus, the undercutting in combination with the forming of the straining layer curves the fin such that, when viewed from a top of the substrate, the fin is bowed and has a curved shape.

    摘要翻译： 一种形成晶体管的方法在衬底上形成半导体鳍片，使得鳍片从衬底延伸。 然后，该方法在鳍片的中心部分上形成栅极导体，使翅片的端部部分露出。 接下来，翅片的端部掺杂有至少一种杂质，以使翅片的中心部分作为半导体，并将翅片的端部形成为导体。 翅片的端部被底切以使翅片的端部与基板断开，使得翅片沿着中心部分连接到基板，并且沿着端部与基板断开，并且端部部分是自由的 移动，中央部分不能自由移动。 在翅片的第一侧上形成有应变层，并且应变层在翅片上施加物理压力，使得端部在紧固层形成之后永久地与中心部分的直线取向远离。 因此，与形成应变层相结合的底切使翅片弯曲，使得当从基板的顶部观察时，翅片弯曲并具有弯曲形状。

    Semiconductor devices having torsional stresses
    17.
    发明授权
    Semiconductor devices having torsional stresses 失效
    具有扭转应力的半导体器件

    公开(公告)号：US07462916B2

    公开(公告)日：2008-12-09

    申请号：US11458461

    申请日：2006-07-19

    申请人： Richard Q. Williams ,  Dureseti Chidambarrao ,  John J. Ellis-Monaghan ,  Shreesh Narasimha ,  Edward J. Nowak ,  John J. Pekarik

    发明人： Richard Q. Williams ,  Dureseti Chidambarrao ,  John J. Ellis-Monaghan ,  Shreesh Narasimha ,  Edward J. Nowak ,  John J. Pekarik

    IPC分类号： H01L29/76

    CPC分类号： H01L29/78 ,  H01L21/7624 ,  H01L21/823807 ,  H01L29/66795 ,  H01L29/7846 ,  H01L29/7848 ,  H01L29/785

    摘要： A FET structure is provided in which at least one stressor element provided at or near one corner of an active semiconductor region applies a stress in a first direction to one side of a channel region of the FET to apply a torsional stress to the channel region of the FET. In a particular embodiment, a second stressor element is provided at or near an opposite corner of the active semiconductor region to apply a stress in a second direction to an opposite side of a channel region of the FET, the second direction being opposite to the first direction. In this way, the first and second stressor elements cooperate together in applying a torsional stress to the channel region of the FET.

    摘要翻译： 提供了一种FET结构，其中设置在有源半导体区域的一个角附近或附近的至少一个应激元件将第一方向上的应力施加到FET的沟道区域的一侧，以向该沟道区域的沟道区域施加扭转应力 FET。 在特定实施例中，第二应力元件设置在有源半导体区域的相对拐角处或附近，以将第二方向上的应力施加到FET的沟道区域的相对侧，第二方向与第一方向相反 方向。 以这种方式，第一和第二应激元件协同工作，将扭曲应力施加到FET的沟道区域。

    METHOD FOR REDUCING TOP NOTCHING EFFECTS IN PRE-DOPED GATE STRUCTURES
    18.
    发明申请
    METHOD FOR REDUCING TOP NOTCHING EFFECTS IN PRE-DOPED GATE STRUCTURES 审中-公开
    用于减少前浇口结构中顶部止点效应的方法

    公开(公告)号：US20080188089A1

    公开(公告)日：2008-08-07

    申请号：US11671668

    申请日：2007-02-06

    申请人： Anthony I. Chou ,  Sadanand V. Deshpande ,  Renee T. Mo ,  Shreesh Narasimha ,  Katsunori Onishi ,  Dominic Schepis

    发明人： Anthony I. Chou ,  Sadanand V. Deshpande ,  Renee T. Mo ,  Shreesh Narasimha ,  Katsunori Onishi ,  Dominic Schepis

    IPC分类号： H01L21/31

    CPC分类号： H01L21/32105 ,  H01L21/28035 ,  H01L21/28247

    摘要： A method for reducing top notching effects in pre-doped gate structures includes subjecting an etched, pre-doped gate stack structure to a re-oxidation process, the re-oxidation process comprising a radical assisted re-oxidation process so as to result in the formation of an oxide layer over vertical sidewall and horizontal top surfaces of the etched gate stack structure. The resulting oxide layer has a substantially uniform thickness independent of grain boundary orientations of the gate stack structure and independent of the concentration and location of dopant material present therein.

    摘要翻译： 用于减少预掺杂栅极结构中的顶部切口效应的方法包括将经蚀刻的预掺杂栅极堆叠结构进行再氧化处理，所述再氧化工艺包括自由基辅助再氧化工艺，以便导致 在蚀刻的栅堆叠结构的垂直侧壁和水平顶表面上形成氧化物层。 所得到的氧化物层具有与栅极堆叠结构的晶界取向无关的基本均匀的厚度，而与其中存在的掺杂剂材料的浓度和位置无关。

    Device having enhanced stress state and related methods
    19.
    发明授权
    Device having enhanced stress state and related methods 有权
    具有增强的应力状态和相关方法的装置

    公开(公告)号：US07348635B2

    公开(公告)日：2008-03-25

    申请号：US10905025

    申请日：2004-12-10

    申请人： Dureseti Chidambarrao ,  Ying Li ,  Rajeev Malik ,  Shreesh Narasimha ,  Haining Yang ,  Huilong Zhu

    发明人： Dureseti Chidambarrao ,  Ying Li ,  Rajeev Malik ,  Shreesh Narasimha ,  Haining Yang ,  Huilong Zhu

    IPC分类号： H01L31/00

    CPC分类号： H01L29/7843 ,  H01L21/823807 ,  H01L29/66772 ,  Y10S438/938

    摘要： The present invention provides a semiconductor device having dual nitride liners, which provide an increased transverse stress state for at least one FET and methods for the manufacture of such a device. A first aspect of the invention provides a method for use in the manufacture of a semiconductor device comprising the steps of applying a first silicon nitride liner to the device and applying a second silicon nitride liner adjacent the first silicon nitride liner, wherein at least one of the first and second silicon nitride liners induces a transverse stress in a silicon channel beneath at least one of the first and second silicon nitride liner.

    摘要翻译： 本发明提供一种具有双重氮化物衬垫的半导体器件，其为至少一个FET提供增加的横向应力状态以及用于制造这种器件的方法。 本发明的第一方面提供了一种用于制造半导体器件的方法，包括以下步骤：将第一氮化硅衬垫施加到器件上并施加与第一氮化硅衬垫相邻的第二氮化硅衬垫，其中至少一个 第一和第二氮化硅衬垫在第一和第二氮化硅衬里中的至少一个之下的硅沟道中引起横向应力。

    Method of forming sidewall spacer using dual-frequency plasma enhanced CVD
    20.
    发明授权
    Method of forming sidewall spacer using dual-frequency plasma enhanced CVD 失效
    使用双频等离子体增强CVD形成侧壁间隔物的方法

    公开(公告)号：US07202187B2

    公开(公告)日：2007-04-10

    申请号：US10710257

    申请日：2004-06-29

    申请人： Ravikumar Ramachandran ,  James T. Kelliher ,  Shreesh Narasimha ,  Jeffrey W. Sleight

    发明人： Ravikumar Ramachandran ,  James T. Kelliher ,  Shreesh Narasimha ,  Jeffrey W. Sleight

    IPC分类号： H01L21/469 ,  H01L21/31

    CPC分类号： H01L21/3185 ,  H01L21/0217 ,  H01L21/02274 ,  H01L21/823864

    摘要： A silicon nitride spacer material for use in forming a PFET device and a method for making the spacer includes the use of a dual-frequency plasma enhanced CVD process wherein the temperature is in the range depositing a silicon nitride layer by means of a low-temperature dual-frequency plasma enhanced CVD process, at a temperature in the range 400° C. to 550° C. The process pressure is in the range 2 Torr to 5 Torr. The low frequency power is in the range 0 W to 50 W, and the high frequency power is in the range 90 W to 110 W. The precursor gases of silane, ammonia and nitrogen flow at flow rates in the ratio 240:3200:4000 sccm. The use of the silicon nitride spacer of the invention to form a PFET device having a dual spacer results in a 10%–15% performance improvement compared to a similar PFET device having a silicon nitride spacer formed by a RTCVD process.

    摘要翻译： 用于形成PFET器件的氮化硅间隔物材料和用于制造间隔物的方法包括使用双频等离子体增强CVD工艺，其中温度在通过低温下沉积氮化硅层的范围 双频等离子体增强CVD工艺，温度范围为400°C至550°C。工艺压力范围为2 Torr至5 Torr。 低频功率在0W至50W的范围内，高频功率在90W至110W的范围内。硅烷，氨和氮气的前体气体以240：3200：4000的比例流动 sccm。 与具有通过RTCVD工艺形成的氮化硅间隔物的类似PFET器件相比，使用本发明的氮化硅间隔物形成具有双间隔物的PFET器件导致10％-15％的性能提高。