公开(公告)号：WO2013002902A3

公开(公告)日：2013-04-25

申请号：PCT/US2012037919

申请日：2012-05-15

Applicant: IBM ,  HARAN BALASUBRAMANIAN ,  CHENG KANGGUO ,  PONOTH SHOM ,  STANDAERT THEODORUS E ,  YAMASHITA TENKO

Inventor： HARAN BALASUBRAMANIAN ,  CHENG KANGGUO ,  PONOTH SHOM ,  STANDAERT THEODORUS E ,  YAMASHITA TENKO

IPC: H01L21/336 ,  H01L21/8238 ,  H01L29/78

CPC classification number: H01L21/84 ,  H01L21/22 ,  H01L21/823807 ,  H01L21/823814 ,  H01L21/823828 ,  H01L21/823878 ,  H01L27/1203 ,  H01L29/517 ,  H01L29/518 ,  H01L29/66545

Abstract: In one embodiment a method is provided that includes providing a structure including a semiconductor substrate (12) having at least one device region (14) located therein, and a doped semiconductor layer located on an upper surface of the semiconductor substrate in the at least one device region. After providing the structure, a sacrificial gate region (28) having a spacer (34) located on sidewalls thereof is formed on an upper surface of the doped semiconductor layer. A planarizing dielectric material (36) is then formed and the sacrificial gate region (28) is removed to form an opening (38) that exposes a portion of the doped semiconductor layer. The opening is extended to an upper surface of the semiconductor substrate (20) and then an anneal is performed that causes outdiffusion of dopant from remaining portions of the doped semiconductor layer forming a source region (40) and a drain region (42) in portions of the semiconductor substrate that are located beneath the remaining portions of the doped semiconductor layer. A high k gate dielectric (46) and a metal gate (48) are then formed into the extended opening.

Abstract translation: 在一个实施例中，提供了一种方法，其包括提供包括具有位于其中的至少一个器件区域（14）的半导体衬底（12）的结构，以及位于所述至少一个中的所述半导体衬底的上表面上的掺杂半导体层 设备区域。 在提供结构之后，在掺杂半导体层的上表面上形成具有位于其侧壁上的间隔物（34）的牺牲栅极区域（28）。 然后形成平坦化电介质材料（36），去除牺牲栅极区域（28）以形成露出掺杂半导体层的一部分的开口（38）。 开口延伸到半导体衬底（20）的上表面，然后执行退火，其导致部分地形成源区（40）和漏区（42）的掺杂半导体层的剩余部分的扩散扩散 位于掺杂半导体层的剩余部分下方的半导体衬底。 然后，将高k栅极电介质（46）和金属栅极（48）形成为延伸的开口。

公开(公告)号：DE112012002700T5

公开(公告)日：2014-03-20

申请号：DE112012002700

申请日：2012-05-15

Applicant: IBM

Inventor： HARAN BALASUBRAMANIAN ,  CHENG KANGGUO ,  PONOTH SHOM ,  STANDAERT THEODORUS E ,  YAMASHITA TENKO

IPC: H01L21/336 ,  H01L21/8238 ,  H01L29/78

Abstract: In einer Ausführungsform wird ein Verfahren bereitgestellt, das ein Bereitstellen einer Struktur beinhaltet, die ein Halbleitersubstrat (12) mit wenigstens einem darin befindlichen Bereich (14) einer Einheit sowie eine dotierte Halbleiterschicht beinhaltet, die sich auf einer Oberseite des Halbleitersubstrats in dem wenigstens einen Bereich der Einheit befindet. Nach dem Bereitstellen der Struktur wird ein Opfer-Gate-Bereich (28) mit einem auf Seitenwänden desselben befindlichen Abstandshalter (34) auf einer Oberseite der dotierten Halbleiterschicht gebildet. Anschließend wird ein planarisierendes dielektrisches Material (36) gebildet, und der Opfer-Gate-Bereich (28) wird entfernt, um eine Öffnung (38) zu bilden, die einen Anteil der dotierten Halbleiterschicht freilegt. Die Öffnung wird bis zu einer Oberseite des Halbleitersubstrats (20) erweitert, und anschließend wird ein Tempervorgang durchgeführt, der eine Ausdiffusion von Dotierstoffen aus verbleibenden Anteilen der dotierten Halbleiterschicht bewirkt, wobei ein Source-Bereich (40) und ein Drain-Bereich (42) in Anteilen des Halbleitersubstrats gebildet werden, die sich unter den verbleibenden Anteilen der dotierten Halbleiterschicht befinden. Dann werden ein Gate-Dielektrikum (46) mit einem hohen k und ein Metall-Gate (48) in die erweiterte Öffnung hinein gebildet.

公开(公告)号：GB2497185B

公开(公告)日：2013-12-11

申请号：GB201220942

申请日：2012-11-21

Applicant: IBM

Inventor： STANDAERT THEODORUS EDUARDUS ,  HARAN BALASUBRAMANIAN ,  CHENG KANGGUO ,  PONOTH SHOM ,  YAMASHITA TENKO ,  SEO SOON-CHEON

IPC: H01L29/66

Abstract: A FinFET with improved gate planarity and method of fabrication is disclosed. The gate is disposed on a pattern of fins prior to removing any unwanted fins. Lithographic techniques or etching techniques or a combination of both may be used to remove the unwanted fins. All or some of the remaining fins may be merged.

公开(公告)号：GB2517854A

公开(公告)日：2015-03-04

申请号：GB201419746

申请日：2013-03-13

Applicant: IBM

Inventor： DORIS BRUCE B ,  CHENG KANGGUO ,  HARAN BALASUBRAMANIAN ,  KHAKIFIROOZ ALI ,  KULKARNI PRANITA ,  KUMAR ARVIND ,  PONOTH SHOM

IPC: H01L21/762 ,  H01L21/8238

Abstract: Shallow trench isolation structures are provided for use with UTBB (ultra-thin body and buried oxide) semiconductor substrates, which prevent defect mechanisms from occurring, such as the formation of electrical shorts between exposed portions of silicon layers on the sidewalls of shallow trench of a UTBB substrate, in instances when trench fill material of the shallow trench is subsequently etched away and recessed below an upper surface of the UTBB substrate.

公开(公告)号：GB2503176A

公开(公告)日：2013-12-18

申请号：GB201317939

申请日：2012-01-16

Applicant: IBM

Inventor： KHAKIFIROOZ ALI ,  CHENG KANGGUO ,  DORIS BRUCE ,  HAENSCH WILFRIED E A ,  HARAN BALASUBRAMANIAN ,  KULKARNI PRANITA

IPC: H01L21/8244 ,  H01L21/768 ,  H01L21/8234

Abstract: A common cut mask is employed to define a gate pattern and a local interconnect pattern so that local interconnect structures and gate structures are formed with zero overlay variation relative to one another. A local interconnect structure may be laterally spaced from a gate structure in a first horizontal direction, and contact another gate structure in a second horizontal direction that is different from the first horizontal direction. Further, a gate structure may be formed to be collinear with a local interconnect structure that adjoins the gate structure. The local interconnect structures and the gate structures are formed by a common damascene processing step so that the top surfaces of the gate structures and the local interconnect structures are coplanar with each other.

公开(公告)号：GB2503176B

公开(公告)日：2014-07-02

申请号：GB201317939

申请日：2012-01-16

Applicant: IBM

Inventor： KHAKIFIROOZ ALI ,  CHENG KANGGUO ,  DORIS BRUCE ,  HAENSCH WILFRIED E A ,  HARAN BALASUBRAMANIAN ,  KULKARNI PRANITA

IPC: H01L21/8244 ,  H01L21/768 ,  H01L21/8234

Abstract: A common cut mask is employed to define a gate pattern and a local interconnect pattern so that local interconnect structures and gate structures are formed with zero overlay variation relative to one another. A local interconnect structure may be laterally spaced from a gate structure in a first horizontal direction, and contact another gate structure in a second horizontal direction that is different from the first horizontal direction. Further, a gate structure may be formed to be collinear with a local interconnect structure that adjoins the gate structure. The local interconnect structures and the gate structures are formed by a common damascene processing step so that the top surfaces of the gate structures and the local interconnect structures are coplanar with each other.

公开(公告)号：GB2497185A

公开(公告)日：2013-06-05

申请号：GB201220942

申请日：2012-11-21

Applicant: IBM

Inventor： STANDAERT THEODORUS EDUARDUS ,  HARAN BALASUBRAMANIAN ,  CHENG KANGGUO ,  PONOTH SHOM ,  YAMASHITA TENKO ,  SEO SOON-CHEON

IPC: H01L29/66

Abstract: A method of fabricating a FinFET 200 is disclosed which comprises the steps of forming a plurality of fins on a dielectric substrate. A gate layer (208, figure 2A) is deposited over the fins. In some embodiments the fin hardmask that is present on the tops of each fin is removed from some of the fins prior to the deposition of the gate layer. A gate hardmask (210) is then deposited over the gate layer. A portion of the gate hardmask layer and gate layer are then removed. In some embodiments this removal step also removes portions of the fins underneath. In other embodiments portions 202A, 202B, 202C of a subset of fins are removed with an etch. The portion of the etched sacrificial fins that remain are called finlets 220. These finlets remain under the gate of the FinFET. In some embodiments the remaining fins are subsequently merged together.