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2022 Fiscal Year Annual Research Report

Development of single nano materials based on quantum beam and data science

Research Project

Project/Area Number 18H03895
Research InstitutionOsaka University

Principal Investigator

古澤 孝弘  大阪大学, 産業科学研究所, 教授 (20251374)

Co-Investigator(Kenkyū-buntansha) 岡本 一将  大阪大学, 産業科学研究所, 助教 (10437353)
室屋 裕佐  大阪大学, 産業科学研究所, 准教授 (40334320)
大沼 正人  北海道大学, 工学研究院, 教授 (90354208)
Project Period (FY) 2018-04-01 – 2023-03-31
Keywords放射線、X線、粒子線 / 半導体超微細化 / シミュレーション工学 / 計算物理 / データ科学
Outline of Annual Research Achievements

半導体デバイスの大量生産では、非電離放射線領域の光を露光源として加工が行われてきたが、解像度が限界に達っしたため、代わって電離放射線領域にある波長13.5 nmの極端紫外光(EUV)が次期露光源として使われようとしている。EUVはN7もしくは7nmノードと呼ばれる解像度16 nmから実用化され、N2もしくは2 nmノードと呼ばれる解像度10 nm未満(シングルナノ)領域でも使い続けられることが期待されている。しかし、微細加工材料開発は解像度10 nmに大きな壁があり、開発のための学術基盤の早急な整備が必要である。本研究では、電子線加速器、EUV露光機、EUVFEL等の量子ビームを駆使しデータを収集するとともに、データ科学的手法を解析に活用することにより、シングルナノ領域で起こる放射線誘起反応を解明し、シングルナノ材料(2 nmノードに適用可能な20 nm未満の周期で10 nm未満のパターンを解像できる材料)を開発する。
最終年度は、レジストの薄膜化に対応するため、感光時の二次電子へ与える界面影響、現像時のレジスト薄膜の表面自由エネルギーおよび下地膜の表面自由エネルギーがレジスト高分子の溶解に与える影響、吸収係数とエッチング耐性が大きい次世代メタルレジストの反応機構を解明した。これら得られた知見に基づいたEUVレジスト反応機構モデルにより、モンテカルロシミュレーションを行い、次世代EUVリソグラフィ開発で最大の問題となっている確率統計欠陥生成のメカニズムとリスク評価指標を考案した。さらに得られた実験データ、シミュレーション結果を機械学習で解析することにより、シングルナノ材料の設計指針を得た。

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

  • Research Products

    (21 results)

All 2023 2022 Other

All Journal Article (11 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results) Presentation (9 results) (of which Int'l Joint Research: 9 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Stochastic defect generation depending on tetraalkylhydroxide aqueous developers in extreme ultraviolet lithography2023

    • Author(s)
      Harumoto Masahiko、dos Santos Andreia Figueiredo、Santillan Julius Joseph、Itani Toshiro、Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Pages: 016503~016503

    • DOI

      10.35848/1347-4065/aca9ae

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Protected unit distribution near interfaces of chemically amplified resists used for extreme ultraviolet lithography2023

    • Author(s)
      Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Pages: 016509~016509

    • DOI

      10.35848/1347-4065/acb0b2

    • Peer Reviewed
  • [Journal Article] Relationship between surface free energy and development process (swelling and dissolution kinetics) of poly(4-hydroxystyrene) film in water and 2.38 wt% tetramethylammonium hydroxide aqueous solution2022

    • Author(s)
      Ito Yuko Tsutsui、Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Pages: 016502~016502

    • DOI

      10.35848/1347-4065/ac3d42

    • Peer Reviewed
  • [Journal Article] Classification of lines, spaces, and edges of resist patterns in scanning electron microscopy images using unsupervised machine learning2022

    • Author(s)
      Jin Yuqing、Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Pages: 056505~056505

    • DOI

      10.35848/1347-4065/ac56b5

    • Peer Reviewed
  • [Journal Article] Effect of surface free energy of organic underlayer on the dissolution kinetics of poly(4-hydroxystyrene) film in tetramethylammonium hydroxide aqueous developer2022

    • Author(s)
      Otsuka Tomoe、Jin Yuqing、Tanaka Naoki、Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Pages: 056503~056503

    • DOI

      10.35848/1347-4065/ac5947

    • Peer Reviewed
  • [Journal Article] Dependence of photoresist dissolution dynamics in alkaline developers on alkyl chain length of tetraalkylammonium hydroxide2022

    • Author(s)
      Harumoto Masahiko、Santillan Julius Joseph、Itani Toshiro、Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Pages: 056506~056506

    • DOI

      10.35848/1347-4065/ac61f2

    • Peer Reviewed
  • [Journal Article] Estimation of effective reaction radius for catalytic chain reaction of chemically amplified resist by Bayesian optimization2022

    • Author(s)
      Jin Yuqing、Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Pages: 066504~066504

    • DOI

      10.35848/1347-4065/ac6a36

    • Peer Reviewed
  • [Journal Article] Exploration of charge transport materials to improve the radiation tolerance of lead halide perovskite solar cells2022

    • Author(s)
      Murakami Yoshiyuki、Nishikubo Ryosuke、Ishiwari Fumitaka、Okamoto Kazumasa、Kozawa Takahiro、Saeki Akinori
    • Journal Title

      Materials Advances

      Volume: 3 Pages: 4861~4869

    • DOI

      10.1039/d2ma00385f

    • Peer Reviewed
  • [Journal Article] Theoretical study on defect risks of chemically amplified resists used for extreme ultraviolet lithography2022

    • Author(s)
      Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Pages: 106502~106502

    • DOI

      10.35848/1347-4065/ac8dd1

    • Peer Reviewed
  • [Journal Article] Interfacial effects on sensitization of chemically amplified extreme ultraviolet resists2022

    • Author(s)
      Kozawa Takahiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Pages: 116501~116501

    • DOI

      10.35848/1347-4065/ac9500

    • Peer Reviewed
  • [Journal Article] Synthesis and Resist Sensitive Property of Iodine-Containing Materials using Extreme Ultraviolet (EUV) Exposure Tool2022

    • Author(s)
      Iwashige Yutaro、Kudo Hiroto、Okamoto Kazumasa、Kozawa Takahiro
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 35 Pages: 41~47

    • DOI

      10.2494/photopolymer.35.41

  • [Presentation] Current status and prospect of extreme ultraviolet resists2023

    • Author(s)
      Takahiro Kozawa
    • Organizer
      7th EUV-FEL Workshop
    • Int'l Joint Research / Invited
  • [Presentation] Chemical information extraction from scanning electron microscopy images on the basis of image recognition2023

    • Author(s)
      Yuqing Jin, Takahiro Kozawa, Kota Aoki, Tomoya Nakamura, Yasushi Makihara, and Yasushi Yagi
    • Organizer
      IEUVI Resist TWG meeting
    • Int'l Joint Research
  • [Presentation] Chemical information extraction from scanning electron microscopy images on the basis of image recognition2023

    • Author(s)
      Yuqing Jin, Takahiro Kozawa, Kota Aoki, Tomoya Nakamura, Yasushi Makihara, and Yasushi Yagi
    • Organizer
      SPIE Advanced Lithography + Patterning
    • Int'l Joint Research
  • [Presentation] Defect Risks in Chemically Amplified Resists Used for Extreme Ultraviolet Lithography2022

    • Author(s)
      Takahiro Kozawa
    • Organizer
      SPIE Photomask Technology + EUV Lithography
    • Int'l Joint Research
  • [Presentation] Effect of surface free energy of organic underlayer on dissolution kinetics of poly(4-hydroxystyrene) film in tetramethylammonium hydroxide aqueous developer2022

    • Author(s)
      Yuqing Jin, Tomoe Otsuka, Naoki Tanaka, Takahiro Kozawa
    • Organizer
      SPIE Photomask Technology + EUV Lithography
    • Int'l Joint Research
  • [Presentation] Bayesian optimization-based estimation of effective reaction radius of chemically amplified resist in acid catalyzed deprotection reaction2022

    • Author(s)
      Yuqing Jin, Takahiro Kozawa
    • Organizer
      SPIE Photomask Technology + EUV Lithography
    • Int'l Joint Research
  • [Presentation] Study of RLS trade-off mitigation utilizing an organotin-containing chemically amplified resist for high sensitivity patterning2022

    • Author(s)
      Satoshi Enomoto, Kohei Machida, Michiya Naito, Takahiro Kozawa
    • Organizer
      SPIE Photomask Technology + EUV Lithography
    • Int'l Joint Research
  • [Presentation] Application of machine learning to development of chemically amplified resist materials and processes2022

    • Author(s)
      Takahiro Kozawa
    • Organizer
      The 39th International Conference of Photopolymer Science and Technology
    • Int'l Joint Research / Invited
  • [Presentation] Photoresist stochastic defect generation depending on alkalibased developer’s alkyl chain length and concentration2022

    • Author(s)
      Masahiko Harumoto, Andreia Figueiredo dos Santos, Julius Joseph Santillan, Toshiro Itani, and Takahiro Kozawa
    • Organizer
      MNC2022
    • Int'l Joint Research
  • [Remarks] 古澤研ホームページ

    • URL

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

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Published: 2023-12-25  

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