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Research into thin-film formation technology of metal oxide semiconductors by ALD method aiming at high-performance three-dimensional devices

Research Project

Project/Area Number 23K23226
Project/Area Number (Other) 22H01958 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
Section一般
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionNara Institute of Science and Technology

Principal Investigator

Uraoka Yukiharu  奈良先端科学技術大学院大学, 先端科学技術研究科, 教授 (20314536)

Co-Investigator(Kenkyū-buntansha) 上沼 睦典  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (20549092)
Bermundo J.P.S  奈良先端科学技術大学院大学, 先端科学技術研究科, 助教 (60782521)
來福 至  青山学院大学, 理工学部, 助教 (60936871)
Project Period (FY) 2024-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2024: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2023: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2022: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywords酸化物半導体 / 薄膜トランジスタ / ALD法 / 3次元集積回路 / 原子層堆積法 / 半導体 / 機能性薄膜 / 金属酸化物 / トランジスタ / 集積回路 / 金属酸化物薄膜トランジスタ / 三次元デバイス / スパッタ法 / 高集積化 / 3次元素子 / 信頼性 / メモリ / 三次元構造 / 高集積回路 / 三次元高集積回路
Outline of Research at the Start

申請者が永年培ってきた金属酸化物薄膜のプロセス・デバイス技術をベースに、原子層堆積(ALD)技術による新たに薄膜形成技術を確立し、これをチャネル材料とした縦型トランジスタと不揮発性メモリを試作、動作実証することで、その可能性を明らかにする。特に、ALD法による金属酸化物薄膜とゲート絶縁膜としての誘電体薄膜の界面の電子物性を詳しく調査し界面モデルを立案することで、本プロセスの優位性を学術的に明らかにする。

Outline of Final Research Achievements

In this study, we conducted fabrication experiments of fine transistors using atomic layer deposition (ALD) for potential application in three-dimensional LSI structures. ALD is notable for its precise atomic-level film thickness control and high conformity to complex 3D shapes. We compared it with conventional sputtering to evaluate the impact of precursor impurities on device performance. Indium oxide was used as the base material, with gallium (Ga) and zinc (Zn) added as dopants. By adjusting doping concentrations and annealing conditions, we assessed the electrical properties, heat resistance, and reliability of the devices. Results showed that proper Ga doping stabilizes the film structure and preserves performance. ALD was also shown to produce devices with characteristics comparable to those made by sputtering, confirming its strong potential for advanced semiconductor fabrication.

Academic Significance and Societal Importance of the Research Achievements

本研究は、三次元LSI構造への応用を視野に、原子層堆積(ALD)法を用いた微細トランジスタ製造技術の有効性を検証したものである。ALD法は膜厚制御と高被覆性に優れ、次世代半導体製造の中核技術として期待されている。酸化インジウムにGaやZnを添加し、スパッタ法と比較しながら、電気特性や信頼性への影響を体系的に評価した。Gaの適切な添加により、性能と安定性の両立が可能であることを実証した。これにより、ALD法が高信頼性デバイス製造に有望であることを示し、持続可能な情報社会への貢献が期待される。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (40 results)

All 2025 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (17 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 15 results,  Open Access: 5 results) Presentation (21 results) (of which Int'l Joint Research: 20 results,  Invited: 5 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] University of Surrey(英国)

    • Related Report
      2024 Annual Research Report
  • [Journal Article] Intrinsic field-effect mobility in thin-film transistor with polycrystalline In2O3 channel based on transfer length method2025

    • Author(s)
      Takahashi Takanori、Uraoka Yukiharu
    • Journal Title

      Applied Physics Express

      Volume: 18 Issue: 1 Pages: 014001-014001

    • DOI

      10.35848/1882-0786/ada19e

    • Related Report
      2024 Annual Research Report
  • [Journal Article] Dual Role of AgNO3 as an Oxidizer and Chloride Remover toward Enhanced Combustion Synthesis of Low-Voltage and Low-Temperature Amorphous Rare Metal-Free Oxide Thin-Film Transistors2024

    • Author(s)
      Quino Candell Grace P.、Bermundo Juan Paolo、Kawanishi Hidenori、Uraoka Yukiharu
    • Journal Title

      ACS Applied Electronic Materials

      Volume: 6 Issue: 1 Pages: 505-513

    • DOI

      10.1021/acsaelm.3c01479

    • Related Report
      2024 Annual Research Report 2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Nanosheet Oxide Semiconductor FET Using ALD InGaOx Channel for 3-D Integrated Devices2024

    • Author(s)
      Hikake Kaito、Li Zhuo、Hao Junxiang、Pandy Chitra、Saraya Takuya、Hiramoto Toshiro、Takahashi Takanori、Uenuma Mutsunori、Uraoka Yukiharu、Kobayashi Masaharu
    • Journal Title

      IEEE Transactions on Electron Devices

      Volume: 71 Issue: 4 Pages: 2373-2379

    • DOI

      10.1109/ted.2024.3370534

    • Related Report
      2024 Annual Research Report 2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimizing a-IGZO Source-Gated Transistor Current by Structure Alteration via TCAD Simulation and Experiment2024

    • Author(s)
      Sihapitak Pongsakorn、Bermundo Juan Paolo、Bestelink Eva、Sporea Radu A.、Uraoka Yukiharu
    • Journal Title

      IEEE Transactions on Electron Devices

      Volume: 71 Issue: 4 Pages: 2431-2437

    • DOI

      10.1109/ted.2024.3360019

    • Related Report
      2024 Annual Research Report 2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-Field Transport and Statistical Variability of Nanosheet Oxide Semiconductor FETs With Channel Length Scaling2024

    • Author(s)
      Huang Xingyu、Hikake Kaito、Kim Sung-Hun、Sakai Kota、Li Zhuo、Mizutani Tomoko、Saraya Takuya、Hiramoto Toshiro、Takahashi Takanori、Uenuma Mutsunori、Uraoka Yukiharu、Kobayashi Masaharu
    • Journal Title

      IEEE Transactions on Electron Devices

      Volume: 71 Issue: 12 Pages: 7509-7515

    • DOI

      10.1109/ted.2024.3473888

    • Related Report
      2024 Annual Research Report
  • [Journal Article] Atomic Imaging of Interface Defects in an Insulating Film on Diamond2023

    • Author(s)
      Fujii Mami N.、Tanaka Masaki、Tsuno Takumi、Hashimoto Yusuke、Tomita Hiroto、Takeuchi Soichiro、Koga Shunjo、Sun Zexu、Enriquez John Isaac、Morikawa Yoshitada、Mizuno Jun、Uenuma Mutsunori、Uraoka Yukiharu、Matsushita Tomohiro
    • Journal Title

      Nano Letters

      Volume: 23 Issue: 4 Pages: 1189-1194

    • DOI

      10.1021/acs.nanolett.2c04176

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Degradation Due to Photo-Induced Electron in Top-Gate In-Ga-Zn-O Thin Film Transistors With n- Region Under Negative Bias Stress and Light Irradiation2023

    • Author(s)
      Takeda Yujiro、Takahashi Takanori、Miyanaga Ryoko、Bermundo Juan Paolo S.、Uraoka Yukiharu
    • Journal Title

      IEEE Electron Device Letters

      Volume: 44 Issue: 5 Pages: 765-768

    • DOI

      10.1109/led.2023.3258960

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In-situ X-ray diffraction analysis of SiGe liquid phase growth on Si using AlGe paste2023

    • Author(s)
      Shota Suzuki, Moeko Matsubara, Hideaki Minamiyama, Marwan Dhamrin, Yasufumi Fujiwara, Yukiharu Uraoka
    • Journal Title

      Materials Chemistry and Physics

      Volume: 301 Pages: 127639-127639

    • DOI

      10.1016/j.matchemphys.2023.127639

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of annealing ambient on SiGe layer formation using AlGe paste for solar cell application2023

    • Author(s)
      Shota Suzuki, Moeko Matsubara, Hideaki Minamiyama, Marwan Dhamrin and Yukiharu Uraoka
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 62 SK1041 Issue: SK Pages: 1041-1041

    • DOI

      10.35848/1347-4065/acd19c

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dissociation-energy calculations of C-multivacancies in diamond: the density-functional-theory study2023

    • Author(s)
      Purnawati Diki、Fajariah Nurul、Prayogi Harmon、Bermundo Juan Paolo、Nugraheni Ari Dwi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Issue: 5 Pages: 051002-051002

    • DOI

      10.35848/1347-4065/accda7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Interface State Density Prediction between an Insulator and a Semiconductor by Gaussian Process Regression Models for a Modified Process2023

    • Author(s)
      Matsunaga Kanta、Harada Takuto、Harada Shintaro、Sato Akinori、Terai Shota、Uenuma Mutsunori、Miyao Tomoyuki、Uraoka Yukiharu
    • Journal Title

      ACS Omega

      Volume: 8 Issue: 30 Pages: 27458-27466

    • DOI

      10.1021/acsomega.3c02980

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Performance and reliability improvement of all-solution processed indium zinc oxide thin-film transistor by UV irradiation treatment2023

    • Author(s)
      Hanifah Umu、Bermundo Juan Paolo S、Uenuma Mutsunori、Uraoka Yukiharu
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 56 Issue: 40 Pages: 405114-405114

    • DOI

      10.1088/1361-6463/acdefb

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-k Solution-Processed Barium Titanate/Polysiloxane Nanocomposite for Low-Temperature Ferroelectric Thin-Film Transistors2023

    • Author(s)
      Safaruddin Aimi Syairah、Bermundo Juan Paolo S.、Wu Chuanjun、Uenuma Mutsunori、Yamamoto Atsuko、Kimura Mutsumi、Uraoka Yukiharu
    • Journal Title

      ACS Omega

      Volume: 8 Issue: 33 Pages: 29939-29948

    • DOI

      10.1021/acsomega.2c08142

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Performance and Stability Enhancement of Fully Solution-Processed a-InZnO Thin-Film Transistors via Argon Plasma Treatment2023

    • Author(s)
      Hanifah Umu、Bermundo Juan Paolo S.、Kawanishi Hidenori、Vasquez Magdaleno R.、Ilasin Mark D.、Uraoka Yukiharu
    • Journal Title

      ACS Applied Electronic Materials

      Volume: 5 Issue: 11 Pages: 5872-5884

    • DOI

      10.1021/acsaelm.3c00841

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Novel two-dimensional square-structured diatomic group-IV materials: the first-principles prediction2023

    • Author(s)
      Sholihun Sholihun、Purnawati Diki、Bermundo Juan Paolo、Prayogi Harmon、Fatomi Zohan Syah、Hidayati Sri
    • Journal Title

      Physica Scripta

      Volume: 98 Issue: 11 Pages: 115903-115903

    • DOI

      10.1088/1402-4896/acfa3f

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Insulator-to-semiconductor conversion of solution-processed ultra-wide bandgap amorphous gallium oxide via hydrogen annealing2022

    • Author(s)
      Diki Purnawati, Juan Paolo Bermundo, and Yukiharu Uraoka
    • Journal Title

      Applied Physics Express

      Volume: 15 Issue: 2 Pages: 024003-024003

    • DOI

      10.35848/1882-0786/ac466a

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High Mobility silicon indium oxide thin-film transitors fabricated by sputtering process2022

    • Author(s)
      S. Arulkumar, S. Parthiban, J.Y.Kwon, Y.Uraoka, J.P.S. Bermundo, Arka Mukherjee, Bikas C. Das
    • Journal Title

      Vacuum

      Volume: 199 Pages: 110963-110963

    • DOI

      10.1016/j.vacuum.2022.110963

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Narrow Band gap Bismuth Tri-iodide via Cesium Tin Iodide Doping for Lead-free Solar Cells Application2024

    • Author(s)
      Aditya Wahyu Anugrah, Itaru Raifuku, Hidenori Kawanishi, and Yukiharu Uraoka
    • Organizer
      Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Solid-state Laser Annealing (SLA) of Fully Solution-processed Amorphous InZnO Thin-film Transistors at Various Fluence2024

    • Author(s)
      Nu Myat Thazin, Juan Paolo S. Bermundo, Umu Hanifah, Johannes Richter, Sebastian Geburt, and Yukiharu Uraoka
    • Organizer
      18th International Thin-Film Transistor Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ternary Amorphous Oxide Semiconductor Material toward 3D-Integrated Ferroelectric Devices2023

    • Author(s)
      Takanori Takahashi, Mutsunori Uenuma, Masaharu Kobayashi, and Yukiharu Uraoka
    • Organizer
      2023 International Conference on Semiconductor Technology for Ultra Large Scale Integrated Circuits and Thin Film Transistors
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Solution processed ultrawide bandgap insulator to semiconductor conversionof amorphous gallium oxide via fermi level control2023

    • Author(s)
      Juan Paolo Bermundo, Paul Rossener Regonia, Diki Purnawati, Kazushi Ikeda, and Yukiharu Uraoka
    • Organizer
      2023 International Conference on Semiconductor Technology for Ultra Large Scale Integrated Circuits and Thin Film Transistors
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study of source-gated transistor (SGT) for output current enhancement through TCAD simulation2023

    • Author(s)
      Pongsakorn Sihapitak, Juan Paolo S. Bermundo, and Yukiharu Uraoka
    • Organizer
      SID Display Week
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Nanosheet Oxide Semiconductor FET Using ALD InGaOx Channel and InSnOx Electrode with Normally-off Operation, High Mobility and Reliability for 3D Integrated Devices2023

    • Author(s)
      Kaito Hikake , Zhuo Li , Junxiang Hao , Chitra Pandy, Takuya Saraya, Toshiro Hiramoto, Takanori Takahashi, Mutsunori Uenuma, Yukiharu Uraoka, and Masaharu Kobayashi
    • Organizer
      2023 Symposium on VLSI Technology and Circuits
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel Preparation and Characterization of Perovskite Films derived from RF-sputtering on Pyramidal Silicon Substrates2023

    • Author(s)
      Sittan Wongcharoen, Itaru Raifuku, Pere Roca i Cabarrocas, Yvan Bonnassieux, Yukiharu Uraoka
    • Organizer
      The 3rd Annual Meeting of the Japan Photovoltaic Energy Society
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimized Combustion Process for Low-Voltage SixSnyO Thin-Film Transistors2023

    • Author(s)
      Quino Candell Grace Paredes, Bermundo Juan Paolo, and Uraoka Yukiharu
    • Organizer
      23rd International Meeting on Information Display 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Material Design and Strategies for Thermally Stable Oxide Semiconductor toward Three Dimensional Integrated Device Application2023

    • Author(s)
      Takanori Takahashi and Yukiharu Uraoka
    • Organizer
      The 23rd International Meeting on Information Display
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Post-Treatments as Electrode Functionalization of Fully-Solution Processed Amorphous InZnO (a-IZO) Thin-Film Transistors2023

    • Author(s)
      Umu Hanifah, Juan Paolo Bermundo, Nu Myat Thazin, Hidenori Kawanishi, Johannes Richter, Sebastian Geburt, and Yukiharu Uraoka
    • Organizer
      The 23rd International Meeting on Information Display
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Bilayer High-k Al2O3 and HfO2 Gate Insulators on the Electrical Performance of Amorphous Oxide Thin-Film Transistors2023

    • Author(s)
      Dian Budiarti Kastian, Juan Paolo Bermundo, and Yukiharu Uraoka
    • Organizer
      2023 International Conference on Solid State Devices and Materials
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ferroelectric properties of 50 nm size BaTiO3 /polysiloxane nanocomposites processed by low temperature solution method2023

    • Author(s)
      ChuanJun Wu and Juan Paolo Bermundo, Aimi Syairah Safaruddin, Atsuko Yamamoto, Yukiharu Uraoka
    • Organizer
      2023 International Conference on Solid State Devices and Materials
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photoelectron hologram of Mg implanted GaN surface2023

    • Author(s)
      Hazuki Natsui, Mutsunori Uenuma, Hiroto Tomita, Yusuke Hashimoto, Tomohiro Matsushita, and, Yukiharu Uraoka
    • Organizer
      International conference on complex orders in condensed matter
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TiO2/SnO2 Electron Transport Bilayer for Large-Area Low-Temperature Fabrication of Perovskite Solar Cell2023

    • Author(s)
      Yu XIANHUAN, Itaru Raifuku, James Solano, and Yukiharu Uraoka
    • Organizer
      the 34rd International Photovoltaic Science and Engineering Conference
    • Related Report
      2023 Annual Research Report
  • [Presentation] Solution processed functional oxide semiconductors and hybrid materials for flexible electronics2023

    • Author(s)
      Juan Paolo Bermundo
    • Organizer
      Mini workshop on Functional Materials Science 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Atomic layer deposition and plasma technology for high performance amorphous oxide semiconductor thin-film transistors2023

    • Author(s)
      Juan Paolo Bermundo and Yukiharu Uraoka
    • Organizer
      International Symposium of the Vacuum Society of the Philippines 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hysteresis-free Perovskite Solar Cells under LED Illumination2023

    • Author(s)
      Yoji Torii, Itaru Raifuku, and Yukiharu Uraoka
    • Organizer
      Asia-Pacific International Conference on Perovskite
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High Performance Solution Processed Oxide Semiconductors and Hybrid Materials for Flexible Electronics2022

    • Author(s)
      Juan Paolo Bermundo and Yukiharu Uraoka
    • Organizer
      The 29th International Display Workshops
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Thermally Stable Ternary Amorphous Oxide Semiconductors for HfO2-based Ferroelectric Field-Effect Transistor Memories2022

    • Author(s)
      Takanori Takahashi, Mutsunori Uenuma, Masaharu Kobayashi, and Yukiharu Uraoka
    • Organizer
      The 29th International Display Workshops
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Schottky Barrier at Fe2VWAl/Si Interface on Thermoelectric Properties2022

    • Author(s)
      6.Toshimitsu Maeda, Mutsunori Uenuma, Koki Enomoto, and Yukiharu Uraoka
    • Organizer
      The 2022 International Meeting for Future of Electron Devices
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High Performance Fully Solution Processed Transistors Towards Flexible Sustainable Electronics2022

    • Author(s)
      13.Juan Paolo Bermundo, Dianne Corsino, Umu Hanifah, and Yukiharu Uraoka
    • Organizer
      The 242nd ECS Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Patent(Industrial Property Rights)] 成膜方法、成膜装置及び酸化物膜の製造方法2024

    • Inventor(s)
      浦岡行治、高橋崇典
    • Industrial Property Rights Holder
      浦岡行治、高橋崇典
    • Industrial Property Rights Type
      特許
    • Filing Date
      2024
    • Related Report
      2024 Annual Research Report

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Published: 2022-04-19   Modified: 2026-01-16  

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