• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Ab-initio study on correlation between SiC/SiO2 interface structures and electronic properties

Research Project

Project/Area Number 16K18075
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Electronic materials/Electric materials
Research InstitutionTokyo Institute of Technology (2018)
The University of Tokyo (2016-2017)

Principal Investigator

Matsushita Yu-ichiro  東京工業大学, 科学技術創成研究院, 特任講師 (90762336)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords炭化ケイ素 / 第一原理計算 / 界面欠陥 / 炭素欠陥 / DFT / 界面準位 / MOSデバイス / SiC / 単一光子光源 / 界面 / POCl3 / 酸化 / 基礎物理学 / 界面物性
Outline of Final Research Achievements

We have successfully identified the high density of interface states at SiC/SiO2. We clarified two interface states exist: (i) Carbon-associated defects at interfaces and (ii) A novel intrinsic interface state derived from the conduction-band minimum of SiC. Regarding the (i) defects, we have performed electronic structure calculations for comprehensive carbon-associated defects and successfully found 5 dominant carbon-defect structures on the basis of energetics. Regarding the (ii) defects, we have proposed a novel interface state depending on the surface stacking sequences of the SiC. We have found that our calculation results are in compatible with the available experimental facts and even explain the experimental results.

Academic Significance and Societal Importance of the Research Achievements

現在、SiC-MOSデバイス研究開発が全世界的に競争を増している。その中でも、多くの研究者が強い関心を集めているのが界面準位の特定である。今回の研究成果では、その界面準位の候補を絞り込むことに成功した。これまでの理論のアプローチとは異なるエネルギー論に立脚したアプローチを用いることにより、初めて達成した。本成果は、デバイス開発にとっての極めて重要な知見であり、さらなるデバイス開発に向けての指針を与えるものである。SiC-MOSデバイス開発にとって重大な成果が得ることが出来た。

Report

(3 results)
  • 2018 Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Research-status Report
  • Research Products

    (19 results)

All 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (11 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Acknowledgement Compliant: 5 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Int'l Joint Research] マックスプランク研究所(ドイツ)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] ソフィア大学(ブルガリア)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Unfolding energy spectra of double-periodicity two-dimensional systems: Twisted bilayer graphene and MoS2 on graphene2018

    • Author(s)
      Matsushita Yu-ichiro、Nishi Hirofumi、Iwata Jun-ichi、Kosugi Taichi、Oshiyama Atsushi
    • Journal Title

      Physical Review Materials

      Volume: 2 Issue: 1 Pages: 010801-010806

    • DOI

      10.1103/physrevmaterials.2.010801

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] First-Principles Prediction of Densities of Amorphous Materials: The Case of Amorphous Silicon2018

    • Author(s)
      Furukawa Yoritaka、Matsushita Yu-ichiro
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 87 Issue: 2 Pages: 024701-024701

    • DOI

      10.7566/jpsj.87.024701

    • NAID

      40021463317

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comprehensive Study on Band-Gap Variations in sp3-Bonded Semiconductors: Roles of Electronic States Floating in Internal Space2017

    • Author(s)
      Yu-ichiro Matsushita and Atsushi Oshiyama
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 86 Issue: 5 Pages: 054702-054709

    • DOI

      10.7566/jpsj.86.054702

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Analysis of single and composite structural defects in pure amorphous silicon: A first-principles study2017

    • Author(s)
      Furukawa Yoritaka、Matsushita Yu-ichiro
    • Journal Title

      Journal of Non-Crystalline Solids

      Volume: 473 Pages: 64-73

    • DOI

      10.1016/j.jnoncrysol.2017.07.031

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Novel Intrinsic Interface State Controlled by Atomic Stacking Sequence at Interfaces of SiC/SiO22017

    • Author(s)
      Matsushita Yu-ichiro、Oshiyama Atsushi
    • Journal Title

      Nano Letters

      Volume: 17 Issue: 10 Pages: 6458-6463

    • DOI

      10.1021/acs.nanolett.7b03490

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Periodicity-Free Unfolding Method of Electronic Energy Spectra2017

    • Author(s)
      Kosugi Taichi、Nishi Hirofumi、Kato Yasuyuki、Matsushita Yu-ichiro
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 86 Issue: 12 Pages: 124717-124717

    • DOI

      10.7566/jpsj.86.124717

    • NAID

      210000134639

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] First-principles calculations that clarify energetics and reactions of oxygen adsorption and carbon desorption on 4H-SiC (11-20) surface2017

    • Author(s)
      Han Li, Yu-ichiro Matsushita, Mauro Boero, and Atsushi Oshiyama
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 121 Issue: 7 Pages: 3920-3928

    • DOI

      10.1021/acs.jpcc.6b11942

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Microscopic Mechanism of Carbon Annihilation upon SiC Oxidation due to Phosphorous Treatment: Density-Functional Calculations Combined with Ion Mass Spectroscopy2017

    • Author(s)
      Takuma Kobayashi, Yu-ichiro Matsushita, Takafumi Okuda, Tsunenobu Kimoto, and Atsushi Oshiyama
    • Journal Title

      arXiv:1703.08063

      Volume: 1 Pages: 1-14

    • Related Report
      2016 Research-status Report
    • Open Access / Acknowledgement Compliant
  • [Journal Article] Mechanisms of initial oxidation of 4H-SiC (0001) and (000-1) surfaces unraveled by first-principles calculations2017

    • Author(s)
      Yu-ichiro Matsushita and Atsushi Oshiyama
    • Journal Title

      arXiv 1612.00189

      Volume: 1 Pages: 1-28

    • Related Report
      2016 Research-status Report
    • Open Access / Acknowledgement Compliant
  • [Journal Article] A novel intrinsic interface state controlled by atomic stacking sequence at interfaces of SiC/SiO22017

    • Author(s)
      Yu-ichiro Matsushita and A. Oshiyama
    • Journal Title

      arXiv:1704.07094

      Volume: 1 Pages: 1-5

    • Related Report
      2016 Research-status Report
    • Open Access / Acknowledgement Compliant
  • [Journal Article] First-Principles Prediction of Densities of Amorphous Materials: The case of Amorphous Silicon2017

    • Author(s)
      Yoritaka Furukawa and Yu-ichiro Matsushita
    • Journal Title

      arXiv:1704.06107

      Volume: 1 Pages: 1-5

    • NAID

      40021463317

    • Related Report
      2016 Research-status Report
    • Open Access / Acknowledgement Compliant
  • [Presentation] 結合クラスター理論と自己エネルギー汎関数理論に基づく原子の電子状態の比較2018

    • Author(s)
      小杉太一, 西紘史, 古川頼誉, 松下雄一郎
    • Organizer
      日本物理学会 第73回年次大会(2018年)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Coupled-cluster理論に基づくグリーン関数による周期系の電子状態計算2018

    • Author(s)
      古川頼誉, 小杉太一, 西紘史, 松下雄一郎
    • Organizer
      日本物理学会 第73回年次大会(2018年)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 角度分解光電子分光と第一原理計算を用いた層状強磁性V1/3NbS2の電子構造の研究2018

    • Author(s)
      吉田訓, 松下雄一郎, 岩田潤一, 厳正輝, 坂野昌人, 下志万貴博, 堀場弘司, 小野寛太, 組頭広志, 長鶴徳彦, 高阪勇輔, 井上克也, 秋光純, 石坂香子
    • Organizer
      日本物理学会 第73回年次大会(2018年)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Floating Electron states in SiC and its impact on the SiC electronic devices2017

    • Author(s)
      Yu-ichiro Matsushita
    • Organizer
      2017 International Workshop on DIELECTRIC THIN FILMS FOR FUTURE ELECTRON DEVICES
    • Place of Presentation
      総合文化センター(奈良)
    • Year and Date
      2017-11-20
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 第一原理計算によるアモルファスの密度決定手法の提案2017

    • Author(s)
      古川頼誉, 松下雄一郎
    • Organizer
      日本物理学会 2017年秋季大会プログラム
    • Related Report
      2017 Annual Research Report
  • [Presentation] SiC/SiO2界面における電子状態とそのデバイスへの影響2017

    • Author(s)
      松下 雄一郎
    • Organizer
      第30期CAMMフォーラム
    • Place of Presentation
      アイビーホール(東京)
    • Related Report
      2016 Research-status Report
    • Invited

URL: 

Published: 2016-04-21   Modified: 2022-02-22  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi