Presentation
10 April 2024 Vertically tailored hybrid multilayer EUV photoresist with vertical molecular wire structure
Myung Mo Sung, Hyeonseok Ji, Jaehyuk Lee, Jinho Ahn, Chang Gyoun Kim, Sangsul Lee, Yasin Ekinci, Prajith Karadan, Dimitrios Kazazis
Author Affiliations +
Abstract
Basic requirements for good patterns using extreme ultraviolet lithography (EUVL) are sensitivity, resolution, line edge roughness (LER), outgassing, etch resistance, defect density, and reproducibility. Among them, it has been proved that resolution, LER, and sensitivity (RLS) are interdependent with each other. The trade-off between RLS pose a critical challenge in the race towards device downscaling to 1 nm node. LER is the most important consideration to determine the manner in which EUVL will be employed. Recently, we develop a new EUV dry resist with organic-inorganic hybrid multilayer structures vertically tailored with several functional layers by using molecular layer deposition. Additionally, each layer includes a self-assembled organic monolayer to generate a vertical molecular wire structure. The hybrid multilayer resist shows high EUV sensitivity from the high EUV absorbing and reactive layers there. Furthermore, the vertical molecular wire structure of the hybrid resist generates exceptionally low LER.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Myung Mo Sung, Hyeonseok Ji, Jaehyuk Lee, Jinho Ahn, Chang Gyoun Kim, Sangsul Lee, Yasin Ekinci, Prajith Karadan, and Dimitrios Kazazis "Vertically tailored hybrid multilayer EUV photoresist with vertical molecular wire structure", Proc. SPIE PC12953, Optical and EUV Nanolithography XXXVII, PC129530K (10 April 2024); https://doi.org/10.1117/12.3009753
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KEYWORDS
Extreme ultraviolet lithography

Extreme ultraviolet

Line width roughness

Photoresist materials

Monolayers

Synchrotron radiation

Outgassing

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