公开(公告)号：US20230223302A1

公开(公告)日：2023-07-13

申请号：US17663302

申请日：2022-05-13

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Pin-Wen Chen ,  Chang-Ting Chung ,  Yi-Hsiang Chao ,  Yu-Ting Wen ,  Kai-Chieh Yang ,  Yu-Chen Ko ,  Peng-Hao Hsu ,  Ya-Yi Cheng ,  Min-Hsiu Hung ,  Chun-Hsien Huang ,  Wei-Jung Lin ,  Chih-Wei Chang ,  Ming-Hsing Tsai

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

CPC classification number: H01L21/76895 ,  H01L23/535 ,  H01L21/02063 ,  H01L21/76805 ,  H01L21/76814 ,  H01L21/76843 ,  H01L21/76865 ,  H01L21/76868 ,  H01L21/76889

Abstract: A method includes forming a dielectric layer over an epitaxial source/drain region. An opening is formed in the dielectric layer. The opening exposes a portion of the epitaxial source/drain region. A barrier layer is formed on a sidewall and a bottom of the opening. An oxidation process is performing on the sidewall and the bottom of the opening. The oxidation process transforms a portion of the barrier layer into an oxidized barrier layer and transforms a portion of the dielectric layer adjacent to the oxidized barrier layer into a liner layer. The oxidized barrier layer is removed. The opening is filled with a conductive material in a bottom-up manner. The conductive material is in physical contact with the liner layer.

公开(公告)号：US20240413020A1

公开(公告)日：2024-12-12

申请号：US18488393

申请日：2023-10-17

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Min-Hsiu Hung ,  Chun-I Tsai ,  Chih-Wei Chang ,  Ming-Hsing Tsai ,  Syun-Ming Jang ,  Wei-Jen Lo ,  Wei-Jung Lin ,  Yu-Ting Wen ,  Kai-Chieh Yang

IPC: H01L21/8238 ,  H01L21/321 ,  H01L27/092 ,  H01L29/66

Abstract: A method includes forming a contact spacer on a sidewall of an inter-layer dielectric, wherein the contact spacer encircles a contact opening, forming a silicide region in the opening and on a source/drain region, depositing an adhesion layer extending into the contact opening, and performing a treatment process, so that the contact spacer is treated. The treatment process is selected from the group consisting of an oxidation process, a carbonation process, and combinations thereof. The method further includes depositing a metal barrier over the adhesion layer, depositing a metallic material to fill the contact opening, and performing a planarization process to remove excess portions of the metallic material over the inter-layer dielectric.

公开(公告)号：US20240387265A1

公开(公告)日：2024-11-21

申请号：US18786535

申请日：2024-07-28

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Pin-Wen Chen ,  Chang-Ting Chung ,  Yi-Hsiang Chao ,  Yu-Ting Wen ,  Kai-Chieh Yang ,  Yu-Chen Ko ,  Peng-Hao Hsu ,  Ya-Yi Cheng ,  Min-Hsiu Hung ,  Chun-Hsien Huang ,  Wei-Jung Lin ,  Chih-Wei Chang ,  Ming-Hsing Tsai

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

Abstract: A method includes forming a dielectric layer over an epitaxial source/drain region. An opening is formed in the dielectric layer. The opening exposes a portion of the epitaxial source/drain region. A barrier layer is formed on a sidewall and a bottom of the opening. An oxidation process is performing on the sidewall and the bottom of the opening. The oxidation process transforms a portion of the barrier layer into an oxidized barrier layer and transforms a portion of the dielectric layer adjacent to the oxidized barrier layer into a liner layer. The oxidized barrier layer is removed. The opening is filled with a conductive material in a bottom-up manner. The conductive material is in physical contact with the liner layer.

公开(公告)号：US12272600B2

公开(公告)日：2025-04-08

申请号：US17663302

申请日：2022-05-13

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Pin-Wen Chen ,  Chang-Ting Chung ,  Yi-Hsiang Chao ,  Yu-Ting Wen ,  Kai-Chieh Yang ,  Yu-Chen Ko ,  Peng-Hao Hsu ,  Ya-Yi Cheng ,  Min-Hsiu Hung ,  Chun-Hsien Huang ,  Wei-Jung Lin ,  Chih-Wei Chang ,  Ming-Hsing Tsai

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

Abstract: A method includes forming a dielectric layer over an epitaxial source/drain region. An opening is formed in the dielectric layer. The opening exposes a portion of the epitaxial source/drain region. A barrier layer is formed on a sidewall and a bottom of the opening. An oxidation process is performing on the sidewall and the bottom of the opening. The oxidation process transforms a portion of the barrier layer into an oxidized barrier layer and transforms a portion of the dielectric layer adjacent to the oxidized barrier layer into a liner layer. The oxidized barrier layer is removed. The opening is filled with a conductive material in a bottom-up manner. The conductive material is in physical contact with the liner layer.