- Patent Title: CVD based oxide-metal multi structure for 3D NAND memory devices
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Application No.: US15633366Application Date: 2017-06-26
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Publication No.: US10410869B2Publication Date: 2019-09-10
- Inventor: Susmit Singha Roy , Kelvin Chan , Hien Minh Le , Sanjay Kamath , Abhijit Basu Mallick , Srinivas Gandikota , Karthik Janakiraman
- Applicant: Applied Materials, Inc.
- 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: C23C16/06
- IPC: C23C16/06 ; H01L21/3205 ; C23C16/505 ; H01L21/285 ; H01L21/02 ; H01L21/768 ; C23C16/02 ; C23C16/40 ; C23C28/00 ; H01L27/11582

Abstract:
Implementations described herein generally relate to a method for forming a metal layer and to a method for forming an oxide layer on the metal layer. In one implementation, the metal layer is formed on a seed layer, and the seed layer helps the metal in the metal layer nucleate with small grain size without affecting the conductivity of the metal layer. The metal layer may be formed using plasma enhanced chemical vapor deposition (PECVD) and nitrogen gas may be flowed into the processing chamber along with the precursor gases. In another implementation, a barrier layer is formed on the metal layer in order to prevent the metal layer from being oxidized during subsequent oxide layer deposition process. In another implementation, the metal layer is treated prior to the deposition of the oxide layer in order to prevent the metal layer from being oxidized.
Public/Granted literature
- US20170372953A1 CVD BASED OXIDE-METAL MULTI STRUCTURE FOR 3D NAND MEMORY DEVICES Public/Granted day:2017-12-28
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