Invention Grant
- Patent Title: Methods for high temperature etching a high-K material gate structure
- Patent Title (中): 高K蚀刻高K材料栅结构的方法
-
Application No.: US12146303Application Date: 2008-06-25
-
Publication No.: US08501626B2Publication Date: 2013-08-06
- Inventor: Wei Liu , Eiichi Matsusue , Meihua Shen , Shashank Deshmukh , Anh-Kiet Quang Phan , David Palagashvili , Michael D. Willwerth , Jong I. Shin , Barrett Finch , Yohei Kawase
- Applicant: Wei Liu , Eiichi Matsusue , Meihua Shen , Shashank Deshmukh , Anh-Kiet Quang Phan , David Palagashvili , Michael D. Willwerth , Jong I. Shin , Barrett Finch , Yohei Kawase
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Patterson & Sheridan, LLP
- Main IPC: H01L21/302
- IPC: H01L21/302 ; H01L21/461 ; C03C15/00 ; C03C25/68

Abstract:
Methods for etching high-k material at high temperatures are provided. In one embodiment, a method etching high-k material on a substrate may include providing a substrate having a high-k material layer disposed thereon into an etch chamber, forming a plasma from an etching gas mixture including at least a halogen containing gas into the etch chamber, maintaining a temperature of an interior surface of the etch chamber in excess of about 100 degree Celsius while etching the high-k material layer in the presence of the plasma, and maintaining a substrate temperature between about 100 degree Celsius and about 250 degrees Celsius while etching the high-k material layer in the presence of the plasma.
Public/Granted literature
- US20090004870A1 METHODS FOR HIGH TEMPERATURE ETCHING A HIGH-K MATERIAL GATE STRUCTURE Public/Granted day:2009-01-01
Information query
IPC分类: