公开(公告)号：US20220093588A1

公开(公告)日：2022-03-24

申请号：US17026040

申请日：2020-09-18

Applicant: Intel Corporation

Inventor： Sairam SUBRAMANIAN ,  Walid M. HAFEZ ,  Hsu-Yu CHANG ,  Chia-Hong JAN ,  Tanuj TRIVEDI

IPC: H01L27/088 ,  H01L29/78 ,  H01L29/786 ,  H01L29/423 ,  H01L21/8234

Abstract: Adjacent gate-all-around integrated circuit structures having non-merged epitaxial source or drain regions, and methods of fabricating adjacent gate-all-around integrated circuit structures having non-merged epitaxial source or drain regions, are described. For example, an integrated circuit structure includes a first vertical arrangement of nanowires and a second vertical arrangement of nanowires above a substrate. One or more gate stacks is over the first and second vertical arrangements of nanowires. First epitaxial source or drain structures are at ends of the first vertical arrangement of nanowires. Second epitaxial source or drain structures are at ends of the second vertical arrangement of nanowires. An intervening dielectric structure is between adjacent ones of the first epitaxial source or drain structures and between adjacent ones of the second epitaxial source or drain structures.

公开(公告)号：US20210090956A1

公开(公告)日：2021-03-25

申请号：US17112959

申请日：2020-12-04

Applicant: Intel Corporation

Inventor： Roman W. OLAC-VAW ,  Walid M. HAFEZ ,  Chia-Hong JAN ,  Pei-Chi LIU

IPC: H01L21/8234 ,  H01L27/12 ,  H01L21/84 ,  H01L29/78 ,  H01L21/28 ,  H01L23/528 ,  H01L27/088 ,  H01L29/49 ,  H01L21/8238

Abstract: Non-planar I/O and logic semiconductor devices having different workfunctions on common substrates and methods of fabricating non-planar I/O and logic semiconductor devices having different workfunctions on common substrates are described. For example, a semiconductor structure includes a first semiconductor device disposed above a substrate. The first semiconductor device has a conductivity type and includes a gate electrode having a first workfunction. The semiconductor structure also includes a second semiconductor device disposed above the substrate. The second semiconductor device has the conductivity type and includes a gate electrode having a second, different, workfunction.

公开(公告)号：US20210036026A1

公开(公告)日：2021-02-04

申请号：US17072850

申请日：2020-10-16

Applicant: Intel Corporation

Inventor： Walid M. HAFEZ ,  Jeng-Ya D. YEH ,  Curtis TSAI ,  Joodong PARK ,  Chia-Hong JAN ,  Gopinath BHIMARASETTI

IPC: H01L27/12 ,  H01L21/8234 ,  H01L21/84 ,  H01L29/66 ,  H01L21/02 ,  H01L21/28 ,  H01L29/423 ,  H01L29/51

Abstract: High voltage three-dimensional devices having dielectric liners and methods of forming high voltage three-dimensional devices having dielectric liners are described. For example, a semiconductor structure includes a first fin active region and a second fin active region disposed above a substrate. A first gate structure is disposed above a top surface of, and along sidewalls of, the first fin active region. The first gate structure includes a first gate dielectric, a first gate electrode, and first spacers. The first gate dielectric is composed of a first dielectric layer disposed on the first fin active region and along sidewalls of the first spacers, and a second, different, dielectric layer disposed on the first dielectric layer and along sidewalls of the first spacers. The semiconductor structure also includes a second gate structure disposed above a top surface of, and along sidewalls of, the second fin active region. The second gate structure includes a second gate dielectric, a second gate electrode, and second spacers. The second gate dielectric is composed of the second dielectric layer disposed on the second fin active region and along sidewalls of the second spacers.

公开(公告)号：US20200335582A1

公开(公告)日：2020-10-22

申请号：US16918952

申请日：2020-07-01

Applicant: Intel Corporation

Inventor： Walid M. HAFEZ ,  Chia-Hong JAN

IPC: H01L29/06 ,  H01L29/40 ,  H01L29/66 ,  H01L29/808 ,  H01L29/8605 ,  H01L27/098

Abstract: A dielectric and isolation lower fin material is described that is useful for fin-based electronics. In some examples, a dielectric layer is on first and second sidewalls of a lower fin. The dielectric layer has a first upper end portion laterally adjacent to the first sidewall of the lower fin and a second upper end portion laterally adjacent to the second sidewall of the lower fin. An isolation material is laterally adjacent to the dielectric layer directly on the first and second sidewalls of the lower fin and a gate electrode is over a top of and laterally adjacent to sidewalls of an upper fin. The gate electrode is over the first and second upper end portions of the dielectric layer and the isolation material.

公开(公告)号：US20190278022A1

公开(公告)日：2019-09-12

申请号：US16462077

申请日：2016-12-30

Applicant: Intel Corporation

Inventor： Rahul RAMASWAMY ,  Chia-Hong JAN ,  Walid HAFEZ ,  Neville DIAS ,  Hsu-Yu CHANG ,  Roman W. OLAC-VAW ,  Chen-Guan LEE

IPC: G02B6/122 ,  G02B6/12 ,  G02B6/134 ,  G02B6/136

Abstract: Embodiments of the invention include an electromagnetic waveguide and methods of forming electromagnetic waveguides. In an embodiment, the electromagnetic waveguide may include a first semiconductor fin extending up from a substrate and a second semiconductor fin extending up from the substrate. The fins may be bent towards each other so that a centerline of the first semiconductor fin and a centerline of the second semiconductor fin extend from the substrate at a non-orthogonal angle. Accordingly, a cavity may be defined by the first semiconductor fin, the second semiconductor fin, and a top surface of the substrate. Embodiments of the invention may include a metallic layer and a cladding layer lining the surfaces of the cavity. Additional embodiments may include a core formed in the cavity.

公开(公告)号：US20190237564A1

公开(公告)日：2019-08-01

申请号：US16344003

申请日：2016-12-12

Applicant: Intel Corporation

Inventor： Chia-Hong JAN ,  Walid M. HAFEZ ,  Neville L. DIAS ,  Rahul RAMASWAMY ,  Hsu-Yu CHANG ,  Roman W. OLAC-VAW ,  Chen-Guan LEE

IPC: H01L29/66 ,  H01L29/78 ,  H01L29/08 ,  H01L29/10

CPC classification number: H01L29/66795 ,  H01L29/0847 ,  H01L29/1033 ,  H01L29/66 ,  H01L29/66356 ,  H01L29/66818 ,  H01L29/7391 ,  H01L29/785 ,  H01L29/7851

Abstract: A transistor including a source and a drain each formed in a substrate; a channel disposed in the substrate between the source and drain, wherein the channel includes opposing sidewalls with a distance between the opposing sidewalls defining a width dimension of the channel and wherein the opposing sidewalls extend a distance below a surface of the substrate; and a gate electrode on the channel. A method of forming a transistor including forming a source and a drain in an area of a substrate; forming a source contact on the source and a drain contact on the drain; after forming the source contact and the drain contact, forming a channel in the substrate in an area between the source and drain, the channel including a body having opposing sidewalls separated by a length dimension; and forming a gate contact on the channel.

公开(公告)号：US20180226432A1

公开(公告)日：2018-08-09

申请号：US15946666

申请日：2018-04-05

Applicant: Intel Corporation

Inventor： Walid M. HAFEZ ,  Jeng-Ya D. YEH ,  Curtis TSAI ,  Joodong PARK ,  Chia-Hong JAN ,  Gopinath BHIMARASETTI

IPC: H01L27/12 ,  H01L29/66 ,  H01L29/51 ,  H01L29/423 ,  H01L21/8234 ,  H01L21/02 ,  H01L21/28 ,  H01L21/84

Abstract: High voltage three-dimensional devices having dielectric liners and methods of forming high voltage three-dimensional devices having dielectric liners are described. For example, a semiconductor structure includes a first fin active region and a second fin active region disposed above a substrate. A first gate structure is disposed above a top surface of, and along sidewalls of, the first fin active region. The first gate structure includes a first gate dielectric, a first gate electrode, and first spacers. The first gate dielectric is composed of a first dielectric layer disposed on the first fin active region and along sidewalls of the first spacers, and a second, different, dielectric layer disposed on the first dielectric layer and along sidewalls of the first spacers. The semiconductor structure also includes a second gate structure disposed above a top surface of, and along sidewalls of, the second fin active region. The second gate structure includes a second gate dielectric, a second gate electrode, and second spacers. The second gate dielectric is composed of the second dielectric layer disposed on the second fin active region and along sidewalls of the second spacers.

公开(公告)号：US20170186855A1

公开(公告)日：2017-06-29

申请号：US15461427

申请日：2017-03-16

Applicant: Intel Corporation

Inventor： Anand S. Murthy ,  Robert S. CHAU ,  Patrick MORROW ,  Chia-Hong JAN ,  Paul PACKAN

IPC: H01L29/66 ,  H01L29/165 ,  H01L29/78 ,  H01L29/08 ,  H01L29/06

CPC classification number: H01L29/66636 ,  H01L21/02532 ,  H01L21/0262 ,  H01L21/2022 ,  H01L29/0646 ,  H01L29/0847 ,  H01L29/1083 ,  H01L29/16 ,  H01L29/161 ,  H01L29/165 ,  H01L29/41766 ,  H01L29/41783 ,  H01L29/4925 ,  H01L29/66477 ,  H01L29/66492 ,  H01L29/665 ,  H01L29/66545 ,  H01L29/66621 ,  H01L29/66628 ,  H01L29/7834 ,  H01L29/7848

Abstract: Microelectronic structures embodying the present invention include a field effect transistor (FET) having highly conductive source/drain extensions. Formation of such highly conductive source/drain extensions includes forming a passivated recess which is back filled by epitaxial deposition of doped material to form the source/drain junctions. The recesses include a laterally extending region that underlies a portion of the gate structure. Such a lateral extension may underlie a sidewall spacer adjacent to the vertical sidewalls of the gate electrode, or may extend further into the channel portion of a FET such that the lateral recess underlies the gate electrode portion of the gate structure. In one embodiment the recess is back filled by an in-situ epitaxial deposition of a bilayer of oppositely doped material. In this way, a very abrupt junction is achieved that provides a relatively low resistance source/drain extension and further provides good off-state subthreshold leakage characteristics. Alternative embodiments can be implemented with a back filled recess of a single conductivity type.

公开(公告)号：US20160111426A1

公开(公告)日：2016-04-21

申请号：US14977367

申请日：2015-12-21

Applicant: Intel Corporation

Inventor： Curtis TSAI ,  Chia-Hong JAN ,  Jeng-Ya David YEH ,  Joodong PARK ,  Walid M. HAFEZ

IPC: H01L27/092 ,  H01L29/49 ,  H01L29/423

CPC classification number: H01L27/0922 ,  H01L21/823431 ,  H01L21/823456 ,  H01L21/823462 ,  H01L27/0886 ,  H01L27/0924 ,  H01L29/401 ,  H01L29/408 ,  H01L29/42364 ,  H01L29/4966 ,  H01L29/512 ,  H01L29/513 ,  H01L29/517 ,  H01L29/518 ,  H01L29/66484 ,  H01L29/66795 ,  H01L29/7831 ,  H01L29/7851 ,  H01L29/7855

Abstract: Two or more types of fin-based transistors having different gate structures and formed on a single integrated circuit are described. The gate structures for each type of transistor are distinguished at least by the thickness or composition of the gate dielectric layer(s) or the composition of the work function metal layer(s) in the gate electrode. Methods are also provided for fabricating an integrated circuit having at least two different types of fin-based transistors, where the transistor types are distinguished by the thickness and composition of the gate dielectric layer(s) and/or the thickness and composition of the work function metal in the gate electrode.

Abstract translation: 描述了具有不同栅极结构并形成在单个集成电路上的两种或多种类型的鳍式晶体管。 每种类型的晶体管的栅极结构至少区别于栅极电介质层的厚度或组成或栅电极中功函数金属层的组成。 还提供了用于制造具有至少两种不同类型的基于鳍的晶体管的集成电路的方法，其中晶体管类型通过栅极电介质层的厚度和组成和/或工件的厚度和组成来区分 功能金属在栅电极。