Mr. Makoto Momota Profile

Makoto Momota

General Manager at FUJIFILM Electronic Materials

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Publications (5)

Proceedings Article | 13 March 2015 Paper

Negative-tone imaging with EUV exposure for 14nm hp and beyond

Hideaki Tsubaki, Wataru Nihashi, Toru Tsuchihashi, Toru Fujimori, Makoto Momota, Takahiro Goto

Proceedings Volume 9422, 94220N (2015) https://doi.org/10.1117/12.2085696

KEYWORDS: Extreme ultraviolet lithography, Polymers, Photoresist materials, Photoresist developing, Bridges, Optical lithography, Lithography, Extreme ultraviolet, Capillaries, Digital signal processing

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Manipulation of dissolution properties by changing organic solvent developer and rinse material provides a novel technology to obtain fine pattern beyond the limitation of imaging system based on alkaline developer. QCM study showed no swelling character in negative-tone imaging (NTI) process even for current developer of n-butyl acetate (nBA). Actually, NTI process has shown advantages on resolution and line-width roughness (LWR) in loose pitch around 30 ~ 45 nm hp as a consequence of its non-swelling character. On the other hand, bridge and collapse limited its resolution below 20 nm hp, indicating that non-negligible amount of swelling still exists for tight pitch resolution. We investigated effects of solubility parameter of organic solvents on resolution below 20 nm hp. A bridge was reduced with a decrease in the solubility parameter dp from nBA. On the other hand, much lower dp caused film remaining due to its extremely slow Rmax. Based on these results, we newly developed FN-DP301 containing organic solvent with smaller dp than nBA. Although rinse solvent gave negligible effects on bridge, there is a clear improvement on pattern collapse only in case of using new rinse solvent of FN-RP311. Lithographic performances of NTI process using nBA and FN-DP301 together with the other organic solvents were described in this paper under exposures with an E-beam and a EUV light. It is emphasized that 14 nm hp resolution was obtained only using FN-DP301 as a developer and FN-RP311 as a rinse under E-beam exposure. NTI showed 43% faster photospeed in comparison with PTI at 16 nm hp, indicating that NTI is applicable to obtain high throughput with maintaining resolution. In addition, sub-20 nm trench was obtained using NTI without bridge under EUV exposure, all of which are attributed to the low swelling character of NTI process. Similarly, NTI was able to print 20 nm dots using NXE:3100 with only a little peeling. Conversely CH patterning was significantly worse with NTI compared to PTI, that is, only 36 nm contacts with 60 nm pitch was resolved under EUV exposure.

Proceedings Article | 19 March 2012 Paper

Solvent pre-wetting as an effective start-up method for point-of-use filter

Toru Umeda, Shinichi Sugiyama, Takashi Nakamura, Makoto Momota, Michael Sevegney, Shuichi Tsuzuki, Toru Numaguchi

Proceedings Volume 8325, 83252H (2012) https://doi.org/10.1117/12.916026

KEYWORDS: Lithography, Radium, Manufacturing, Semiconducting wafers, Error analysis, Electronic filtering, Transducers, Inspection, Molecular interactions, Hydrogen

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Proceedings Article | 14 May 2004 Paper

Novel transparent PAGs for 193-nm resists

Kunihiko Kodama, Kenichiro Sato, Shiro Tan, Fumiyuki Nishiyama, Tsukasa Yamanaka, Shinichi Kanna, Hyou Takahashi, Yasumasa Kawabe, Makoto Momota, Tadayoshi Kokubo

Proceedings Volume 5376, (2004) https://doi.org/10.1117/12.538049

KEYWORDS: Transparency, Line edge roughness, Lithography, Polymers, Deep ultraviolet, Absorption

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Proceedings Article | 23 June 2000 Paper

Structural design of a new class of acetal polymer for DUV resists

Toru Fujimori, Shiro Tan, Toshiaki Aoai, Fumiyuki Nishiyama, Tsukasa Yamanaka, Makoto Momota, Shinichi Kanna, Yasumasa Kawabe, Morio Yagihara, Tadayoshi Kokubo, Sanjay Malik, Lawrence Ferreira

Proceedings Volume 3999, (2000) https://doi.org/10.1117/12.388342

KEYWORDS: Polymers, Lithography, Etching, Dry etching, Resistance, Deep ultraviolet, Silicon films, Structural design, Polymer thin films, Photoresist materials

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Proceedings Article | 11 June 1999 Paper

Design of a new bottom antireflective coating composition for KrF resist

Kazuyoshi Mizutani, Makoto Momota, Toshiaki Aoai, Morio Yagihara

Proceedings Volume 3678, (1999) https://doi.org/10.1117/12.350234

KEYWORDS: Polymers, Dry etching, Etching, Absorbance, Absorption, Photoresist materials, Bottom antireflective coatings, Chemical species, Structural design, Lithography

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