Invention Grant
- Patent Title: Tunable adhesion of EUV photoresist on oxide surface
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Application No.: US16675276Application Date: 2019-11-06
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Publication No.: US11022887B2Publication Date: 2021-06-01
- Inventor: Yongan Xu , Jing Guo , Ekmini A. De Silva , Oleg Gluschenkov
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Abdy Raissinia
- Main IPC: G03F7/20
- IPC: G03F7/20 ; H01L21/027 ; G03F7/075 ; G03F7/085 ; G03F7/09

Abstract:
An EUV lithographic structure and methods according to embodiments of the invention includes an EUV photosensitive resist layer disposed directly on an oxide hardmask layer, wherein the oxide hardmask layer is doped with dopant ions to form a doped oxide hardmask layer so as to improve adhesion between the EUV lithographic structure and the oxide hardmask. The EUV lithographic structure is free of a separate adhesion layer.
Public/Granted literature
- US20200073246A1 TUNABLE ADHESION OF EUV PHOTORESIST ON OXIDE SURFACE Public/Granted day:2020-03-05
Information query
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