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Elucidation of plasma-induced defect generation mechanism during atomic layer etching

Research Project

Project/Area Number 20K14453
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 14030:Applied plasma science-related
Research InstitutionNagoya University

Principal Investigator

Tsutsumi Takayoshi  名古屋大学, 低温プラズマ科学研究センター, 助教 (50756137)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsプラズマエッチング / イオン誘起ダメージ / 原子層エッチング / 半導体プロセス / ラジカル吸着 / ダングリングボンド密度 / ラジカル吸着分布 / プラズマ / 欠陥生成
Outline of Research at the Start

プラズマによる原子層エッチング(ALE)においてイオン衝突により誘起される原子数層の反応場内の欠陥をIn-situ表面分析装置を用いて定量解析することでALEの表面反応モデルに資する科学的基盤を構築する。ALEには、脱離プロセスでイオンを材料表面に衝突させることで、吸着プロセスで形成した改質層を揮発脱離させるプロセスがある。しかし、反応場内ではイオン衝突による欠陥密度の増加や不純物(吸着ガスの一部)の残留、生成物の揮発性の違いによる元素組成比の偏りといった欠陥が形成されることが予想される。反応場の欠陥を、処理表面を大気曝露の影響を与えずに定量解析することで、ダメージレスALEの実現に寄与する。

Outline of Final Research Achievements

This research investigated plasma-induced defects generated in the reaction field for ALE (Atomic Layer Etching) by constructing atomic resolution surface analysis method using various In-situ surface observation systems. The surface analysis method clarified the relationship between ion bombardment to a surface and radical adsorption, and dangling bond distribution generated by the ion bombardment. In addition, we quantitatively analyzed the behavior of the element composition ratio due to residual radicals as impurities and selective desorption during radical irradiation and ion bombardment for ALE.

Academic Significance and Societal Importance of the Research Achievements

このイオン誘起ダメージとラジカル吸着の関係性を明らかにしたことにより原子層エッチングに要求されている材料選択性のみならず形状選択性をもつ新規プロセスの開発にも有効である。また、本研究の成果として、イオン誘起ダメージの抑制には限界があることが確かめられ、イオンを用いない新規原子層エッチングプロセスの研究へと発展した。また、今回得られた知見はプラズマプロセスの代表的である反応性イオンエッチングやプラズマ化学気相堆積においても重要なものであり、原子層エッチングのみならず今後研究開発されるあらゆるダメージレス半導体プラズマプロセスへ資する科学的基盤となる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (23 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (17 results) (of which Int'l Joint Research: 11 results,  Invited: 3 results)

  • [Journal Article] Area-selective plasma-enhanced atomic layer etching (PE-ALE) of silicon dioxide using a silane coupling agent2022

    • Author(s)
      Osonio Airah P.、Tsutsumi Takayoshi、Oda Yoshinari、Mukherjee Bablu、Borude Ranjit、Kobayashi Nobuyoshi、Hori Masaru
    • Journal Title

      Journal of Vacuum Science & Technology A

      Volume: 40 Issue: 6 Pages: 062601-062601

    • DOI

      10.1116/6.0002044

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of deposition precursors of hydrogenated amorphous carbon films on the plasma etching resistance based on mass spectrometer measurements and machine learning analysis2022

    • Author(s)
      Kurokawa Jumpei、Kondo Hiroki、Tsutsumi Takayoshi、Ishikawa Kenji、Sekine Makoto、Hori Masaru
    • Journal Title

      Vacuum

      Volume: 205 Pages: 111351-111351

    • DOI

      10.1016/j.vacuum.2022.111351

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of hydrogen content in films on the etching of LPCVD and PECVD SiN films using CF4/H2 plasma at different substrate temperatures2021

    • Author(s)
      Shih‐Nan Hsiao, Nikolay Britun, Thi-Thuy-Nga Nguyen, Takayoshi Tsutsumi, Kenji Ishikawa, Makoto Sekine, Masaru Hori
    • Journal Title

      Plasma Processes and Polymers

      Volume: 18 Issue: 11 Pages: 2100078-2100078

    • DOI

      10.1002/ppap.202100078

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 窒化物半導体プラズマエッチングにおける原子層反応制御と低ダメージプロセス2021

    • Author(s)
      堤 隆嘉、石川 健治、近藤 博基、関根 誠、堀 勝
    • Journal Title

      プラズマ・核融合学会誌

      Volume: 97 Pages: 517-521

    • Related Report
      2021 Research-status Report
  • [Journal Article] Reaction science of layer-by-layer thinning of graphene with oxygen neutrals at room temperature2020

    • Author(s)
      Sugiura Hirotsugu、Kondo Hiroki、Higuchi Kimitaka、Arai Shigeo、Hamaji Ryo、Tsutsumi Takayoshi、Ishikawa Kenji、Hori Masaru
    • Journal Title

      Carbon

      Volume: 170 Pages: 93-99

    • DOI

      10.1016/j.carbon.2020.07.052

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] In situ surface analysis of an ion-energy-dependent chlorination layer on GaN during cyclic etching using Ar+ ions and Cl radicals2020

    • Author(s)
      Hasegawa Masaki、Tsutsumi Takayoshi、Tanide Atsushi、Nakamura Shohei、Kondo Hiroki、Ishikawa Kenji、Sekine Makoto、Hori Masaru
    • Journal Title

      Journal of Vacuum Science & Technology A

      Volume: 38 Issue: 4 Pages: 042602-042602

    • DOI

      10.1116/6.0000124

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Self-Limited Fluorination of Electron Beam-Irradiated GaN Surface2023

    • Author(s)
      Yusuke Izumi, Takayoshi Tsutsumi, Kenji Ishikawa, Hiroki Kondo, Makoto Sekine and Masaru Hori
    • Organizer
      ISPlasma2023/IC-PLANTS2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Positive and Negative Ion Behaviors in DC-Imposed Ar/SF6 Pulsed Plasma2023

    • Author(s)
      Kazuki Toji, Takayoshi Tsutsumi, Kenji Ishikawa, Shih-Nan Hsiao, Makoto Sekine and Masaru Hori
    • Organizer
      ISPlasma2023/IC-PLANTS2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ion Induced Damage in Plasma Enhanced Atomic Layer Etching Processing2022

    • Author(s)
      Takayoshi TSUTSUMI, Hiroki KONDO, Kenji ISHIKAWA, Makoto SEKINE, Masaru HORI
    • Organizer
      第32回日本MRS年次大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Time-resolved measurement of ion energy distribution in pulsed Ar/SF6 plasma2022

    • Author(s)
      Kazuki TOJI, Kenji ISHIKAWA, Takayoshi TSUTSUMI, Shih nan HSIAO, Makoto SEKINE, Masaru HORI
    • Organizer
      第32回日本MRS年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Isotropic Plasma-enhanced Atomic Layer Etching of SiO2 using F radicals and Ar plasma2022

    • Author(s)
      A. Osonio, T. Tsutsumi, B. Mukherjee, R. Borude, N. Kobayashi, and M. Hori
    • Organizer
      The 43rd International Symposium on Dry Process
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Topographically-selective atomic layer etching of SiO2 using fluorine-containing plasma2022

    • Author(s)
      Airah Osonio, Takayoshi Tsutsumi, Bablu Mukherjee, Ranjit Borude, Nobuyoshi Kobayashi, and Masaru Hori
    • Organizer
      11th International Conference on Reactive Plasmas/2022 Gaseous Electronics Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Manipulation of etch selectivity of silicon nitride over silicon dioxide by controlling substrate temperature with a CF4/H2 plasma2022

    • Author(s)
      Shih-Nan Hsiao, Nicolay Britun, Thi-Thuy-Nga Nguyen, Takayoshi Tsutsumi, Kenji Ishikawa, Makoto Sekine, and Masaru Hori
    • Organizer
      14th International Symposium on Advanced Plasma Science and Its Applications for Nitrides and Nanomaterials / 15th International Conference on Plasma Nanotechnology and Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Behavior of Hydrogen Atom in Atmospheric Pressure Micro-Hollow Cathode Discharge2021

    • Author(s)
      Keigo Takeda, Takayoshi Tsutsumi, Mineo Hiramatsu, Masaru Hori
    • Organizer
      12th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Random forest model for property control of plasma2021

    • Author(s)
      J. Kurokawa, T. Tsutsumi, K. Ishikawa, H. Kondo, M. Sekine, and M. Hori
    • Organizer
      The 42nd International Symposium on Dry Process (DPS2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Control of Interface Layers for Selective Atomic Layer Etching2021

    • Author(s)
      Takayoshi Tsutsumi, R. Vervuurt, N. Kobayashi, and Masaru Hori
    • Organizer
      67th AVS International Symposium and Exhibition
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 窒化ガリウムのプラズマエッチング中その場分光エリプソメトリー観測2021

    • Author(s)
      南 吏玖、石川 健治、堤 隆嘉、近藤 博基、関根 誠、小田 修、堀 勝
    • Organizer
      第82回 応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 塩素吸着による窒化ガリウム原子層エッチングの表面反応の理想と現実2021

    • Author(s)
      堤 隆嘉, 長谷川 将希, 中村 昭平, 谷出 敦,近藤 博基, 関根 誠, 石川 健治, 堀 勝
    • Organizer
      第227回 シリコンテクノロジー分科会 研究集会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 塩素吸着を用いた窒化ガリウムの原子層エッチングプロセス特性のArイオンエネルギー依存性2021

    • Author(s)
      堤 隆嘉、長谷川 将希、中村 昭平、谷出 敦、近藤 博基、関根 誠、石川 健治、堀 勝
    • Organizer
      2021年第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] リモート酸素ラジカルによるグラフェンのエッチング反応の分析2021

    • Author(s)
      胡 留剛、堤 隆嘉、蕭 世男、近藤 博基、石川 健治、関根 誠、堀 勝
    • Organizer
      2021年第68回応用理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Initial growth kinetics of hydrogenated amorphous carbon films observed by real-time ellipsometry2021

    • Author(s)
      Jumpei Kurokawa, Hiroki Kondo, Kenji Ishikawa, Takayoshi Tsutsumi,Makoto Sekine and Masaru Hori
    • Organizer
      ISPlasma2021/IC-PLANTS2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quantitative analyses of graphene layer etching using oxygen radicals generated in remote plasma for realization of atomic layer etching2021

    • Author(s)
      Liugang Hu, Takayoshi Tsutsumi, Thi-Thuy-Nga Nguyen, Shih-Nan Hsiao, Hiroki Kondo, Kenji Ishikawa, Makoto Sekine, and Masaru Hori
    • Organizer
      ISPlasma2021/IC-PLANTS2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of Ion Energy Dependence of Depth Profile of GaN by In-situ Surface Analysis2020

    • Author(s)
      Masaki Hasagawa, Takayoshi Tsutsumi, Atsushi Tanide, Shohei Nakamura, Hiroki Kondo, Kenji Ishikawa, Masaru Hori
    • Organizer
      20th International Conference on Atomic Layer Deposition
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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