Invention Grant
- Patent Title: Epitaxial growth methods and structures thereof
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Application No.: US15929722Application Date: 2020-05-18
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Publication No.: US11456360B2Publication Date: 2022-09-27
- Inventor: Tetsuji Ueno , Ming-Hua Yu , Chan-Lon Yang
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsinchu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsinchu
- Agency: Haynes and Boone, LLP
- Main IPC: H01L29/00
- IPC: H01L29/00 ; H01L29/167 ; H01L21/02 ; C23C16/02 ; C30B25/18 ; C30B29/06 ; C23C16/44 ; H01L29/66 ; H01L21/8234 ; H01L29/423 ; H01L29/78

Abstract:
A method and structure for providing a two-step defect reduction bake, followed by a high-temperature epitaxial layer growth. In various embodiments, a semiconductor wafer is loaded into a processing chamber. While the semiconductor wafer is loaded within the processing chamber, a first pre-epitaxial layer deposition baking process is performed at a first pressure and first temperature. In some cases, after the first pre-epitaxial layer deposition baking process, a second pre-epitaxial layer deposition baking process is then performed at a second pressure and second temperature. In some embodiments, the second pressure is different than the first pressure. By way of example, after the second pre-epitaxial layer deposition baking process and while at a growth temperature, a precursor gas may then be introduced into the processing chamber to deposit an epitaxial layer over the semiconductor wafer.
Public/Granted literature
- US20200279920A1 EPITAXIAL GROWTH METHODS AND STRUCTURES THEREOF Public/Granted day:2020-09-03
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