公开(公告)号：US20190067098A1

公开(公告)日：2019-02-28

申请号：US15687591

申请日：2017-08-28

Applicant: GLOBALFOUNDRIES INC.

Inventor： Aditya Kumar ,  Shiv Kumar Mishra ,  Jean-Baptiste Jacques Laloë ,  Wen Zhi Gao

IPC: H01L21/768 ,  H01L21/02 ,  H01L21/285 ,  H01L23/532 ,  H01L23/535

Abstract: Methods of forming a contact for a semiconductor device with double barrier layer sets, and a device so formed are disclosed. Methods may include: depositing a first metal layer contacting a semiconductor substrate in a contact opening; depositing a first nitride barrier layer on the first metal layer; and annealing after depositing the first nitride barrier layer to form silicide region in a junction area underlying the contact opening with the first metal layer and the semiconductor substrate. After the annealing, a second metal layer may be deposited, followed by a second nitride barrier layer. A conductor is formed in a remaining portion of the contact opening. The double barrier layer sets prevent the formation of volcano defects and also advantageously reduce contact resistance.

公开(公告)号：US09419101B1

公开(公告)日：2016-08-16

申请号：US14932394

申请日：2015-11-04

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Jianwei Peng ,  Hong Yu ,  Zhao Lun ,  Tao Han ,  Hsien-Ching Lo ,  Basab Banerjee ,  Wen Zhi Gao ,  Byoung-Gi Min

IPC: H01L21/8232 ,  H01L29/66 ,  H01L29/78 ,  H01L27/108 ,  H01L27/088 ,  H01L21/8234

CPC classification number: H01L29/6656 ,  H01L21/823431 ,  H01L27/0886 ,  H01L27/10879 ,  H01L29/66545 ,  H01L29/66795 ,  H01L29/785

Abstract: A method of forming spacers and the resulting fin-shaped field effect transistors are provided. Embodiments include forming a silicon (Si) fin over a substrate; forming a polysilicon gate over the Si fin; and forming a spacer on top and side surfaces of the polysilicon gate, and on exposed upper and side surfaces of the Si fin, the spacer including: a first layer and second layer having a first dielectric constant, and a third layer formed between the first and second layers and having a second dielectric constant, wherein the second dielectric constant is lower than the first dielectric constant.

Abstract translation: 提供了形成间隔物的方法和所得的鳍状场效应晶体管。 实施例包括在衬底上形成硅（Si）鳍; 在Si鳍上形成多晶硅栅极; 以及在所述多晶硅栅极的顶表面和侧表面上形成间隔物，并且在所述Si鳍的暴露的上表面和外表面上，所述间隔物包括：具有第一介电常数的第一层和第二层，以及形成在所述第一 和第二层并具有第二介电常数，其中第二介电常数低于第一介电常数。

公开(公告)号：US10453747B2

公开(公告)日：2019-10-22

申请号：US15687591

申请日：2017-08-28

Applicant: GLOBALFOUNDRIES INC.

Inventor： Aditya Kumar ,  Shiv Kumar Mishra ,  Jean-Baptiste Jacques Laloë ,  Wen Zhi Gao

IPC: H01L21/768 ,  H01L21/02 ,  H01L21/285 ,  H01L23/532 ,  H01L23/535

Abstract: Methods of forming a contact for a semiconductor device with double barrier layer sets, and a device so formed are disclosed. Methods may include: depositing a first metal layer contacting a semiconductor substrate in a contact opening; depositing a first nitride barrier layer on the first metal layer; and annealing after depositing the first nitride barrier layer to form silicide region in a junction area underlying the contact opening with the first metal layer and the semiconductor substrate. After the annealing, a second metal layer may be deposited, followed by a second nitride barrier layer. A conductor is formed in a remaining portion of the contact opening. The double barrier layer sets prevent the formation of volcano defects and also advantageously reduce contact resistance.