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Elucidation of deprotonation induced mechanism in nano-and microfabrication process using ionizing radiations and its applications

Research Project

Project/Area Number 19K05330
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionOsaka University

Principal Investigator

Okamoto Kazumasa  大阪大学, 産業科学研究所, 助教 (10437353)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsレジスト / 放射線化学 / リソグラフィ / 電子線 / 極端紫外線(EUV) / 化学増幅型レジスト / 半導体微細化 / 酸生成促進剤 / ジフェニルスルホン / 極端紫外線(EUV) / 脱プロトン反応 / レジスト材料 / EUVリソグラフィ / 極端紫外線 / パルスラジオリシス / 極端紫外線(EUV) / 極端紫外線(EUV)・X線
Outline of Research at the Start

半導体微細加工材料であるレジストの高感度化(増感)、高解像度化や解像誤差(ラフネス)の低減を同時に達成することが最も重要な課題であるが、その解決策はいまだ明らかにされていない。本研究では、電離放射線によりイオン化したレジストの脱プロトン反応を促進する酸生成促進剤 (Acid-generating promoter)のメカニズムを明らかにし、新たな電離放射線露光用レジストの解像性能向上を実現する手法の開拓を行う。

Outline of Final Research Achievements

Ionizing radiation such as extreme ultraviolet (EUV) light and electron beam has been used in lithography process used in semiconductor manufacturing. Therefore development of the resist materials with higher performance has been desired. Acid-generating promoters (AGPs) can improve the sensitivity of the chemically amplified resist upon irradiation of ionizing radiation. Research on the effectiveness and mechanism of AGPs for enhancement of the deprotonation efficiency were carried out. The details of the radiation-induced reaction of resist constituent molecules were also clarified.

Academic Significance and Societal Importance of the Research Achievements

現在半導体製造で使われているレジスト材料の性能の向上のために、現行のレジストに添加するだけで脱プロトン反応性等の向上効果のある酸生成促進剤の有効性を示すとともに、その機能の解明を行った。酸生成促進剤の化学構造が、電子または正電荷を受容した後も室温下でも安定に存在でき、酸生成の促進に寄与できることが明らかになった。また、本成果により今後の半導体製造の生産性の向上に繋がることが期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 2020 2019 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results) Remarks (2 results)

  • [Journal Article] Study on deprotonation from radiation-induced ionized acrylate polymers including acidgeneration promoters for improving chemically amplified resists2022

    • Author(s)
      Kazumasa Okamoto, Akihiro Konda, Yuki Ishimaru, Takahiro Kozawa, Yasunobu Nakagawa, Masamichi Nishimura
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: - Issue: 6 Pages: 066505-066505

    • DOI

      10.35848/1347-4065/ac67ba

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dependence of dose rate on the sensitivity of the resist under ultra-high flux extreme ultraviolet (EUV) pulse irradiation2021

    • Author(s)
      Okamoto Kazumasa, Kawai Shunpei, Ikari Yuta, Hori Shigeo, Konda Akihiro, Ueno Koki, Arai Yohei, Ishino Masahiko, Thanhhung Dinh, Nishikino Masaharu, Kon Akira, Owada Shigeki, Inubushi Yuichi, Kinoshita Hiroo, Kozawa Takahiro
    • Journal Title

      Applied Physics Express

      Volume: 14 Issue: 6 Pages: 066502-066502

    • DOI

      10.35848/1882-0786/abfca3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Estimation of electron affinity of photoacid generators: density functional theory calculations using static and dynamic models2021

    • Author(s)
      Kazumasa Okamoto, Takahiro Kozawa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SC Pages: SCCC03-SCCC03

    • DOI

      10.35848/1347-4065/abf469

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Formation of intramolecular dimer radical ions of diphenyl sulfones2020

    • Author(s)
      Kazumasa Okamoto, Shunpei Kawai, Takahiro Kozawa
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 19823-19823

    • DOI

      10.1038/s41598-020-76907-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sensitivity enhancement of chemically amplified EUV resist by adding diphenyl sulfone derivatives2020

    • Author(s)
      Okamoto Kazumasa、Kawai Shunpei、Kozawa Takahiro
    • Journal Title

      Proc. SPIE, Advances in Patterning Materials and Processes XXXVII

      Volume: 11326 Pages: 12-12

    • DOI

      10.1117/12.2551865

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] ポリスチレンの正電荷非局在性への パルスラジオリシスおよびシミュレーション によるアプローチ2022

    • Author(s)
      岡本一将、山本洋揮、古澤孝弘
    • Organizer
      原子力学会2022年春の年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Estimation of electron affinity of photoacid generators: density functional theory calculations using static and dynamic models2020

    • Author(s)
      Kazumasa Okamoto, Takahiro Kozawa
    • Organizer
      MNC 2020, 33rd International Microprocesses and Nanotechnology Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Sensitivity enhancement of chemically amplified EUV resist by adding dipheyl sulfone derivatives2020

    • Author(s)
      Kazumasa Okamoto, Shunpei Kawai, Takahiro Kozawa
    • Organizer
      SPIE Advanced Lithography 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ジフェニルスルホン酸生成促進剤による化学増幅型レジストの感度向上2019

    • Author(s)
      河合俊平、大沼正人、岡本一将、古澤孝弘
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Remarks] 大阪大学産業科学研究所古澤研究室

    • URL

      https://www.sanken.osaka-u.ac.jp/labs/bms/index.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] 大阪大学産業科学研究所 量子ビーム物質科学研究分野  ホームページ

    • URL

      https://www.sanken.osaka-u.ac.jp/labs/bms/

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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