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Electron-spin-resonance characterization on interface defects at wide-gap semiconductor (SiC and GaN) MOS interfaces

Research Project

Project/Area Number 17H02781
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionUniversity of Tsukuba

Principal Investigator

Umeda Takahide  筑波大学, 数理物質系, 准教授 (10361354)

Co-Investigator(Kenkyū-buntansha) 岡本 光央  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (60450665)
原田 信介  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 研究チーム長 (20392649)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Keywordsワイドギャップ半導体 / MOS界面 / 界面欠陥 / 炭化ケイ素 / 窒化ガリウム / 電子スピン共鳴 / ダングリングボンド / 第一原理計算 / SiC / GaN / 4H-SiC / MOS界面欠陥 / MOSFET / 電子スピン共鳴分光 / ESR / パワーエレクトロニクス / 界面準位 / 移動度劣化 / 閾値変動
Outline of Final Research Achievements

We studied MOS (metal-oxide-semiconductor) interface defects of wide-band-gap semiconductors (4H-SiC and GaN), both of which are crucial in future low-energy-loss power electronics. The microscopic origins of the MOS interface defects have not been unraveled over two decades. Using electron spin resonance (ESR) spectroscopy, we have successfully identified the origins of major defects at 4H-SiC/SiO2 interfaces. The most major one is named "PbC center", which is an interface carbon dangling bond, similarly to the famous Pb center (interface silicon dangling bond) at Si/SiO2 interfaces. The PbC center causes the mobility degradation in SiC-MOSFET devices.
For GaN, we studied GaN/SiO2 and GaN/Al2O3 interfaces. In both types of interfaces, we found that interface states are stabilized into doubly-occupied states (ESR-inactive states). We have developed a new convenient technique for estimating the total number of the doubly-occupied interface states by using ESR spectroscopy.

Academic Significance and Societal Importance of the Research Achievements

MOS界面欠陥の正体を突き止めることは、シリコンテクノロジーでは1970-80年代に行われ、これがその後のシリコン集積回路の発展の礎となった。同じようにワイドギャップ半導体でもMOS界面欠陥の正体を突き止めることは必要不可欠である。本研究は、炭化ケイ素(4H-SiC)において代表的なMOS界面欠陥の正体を突き止めることができた。窒化ガリウム(GaN)でも欠陥量を調べることのできる新しい手法を提案することができた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (30 results)

All 2020 2019 2018 2017 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (17 results) (of which Int'l Joint Research: 9 results,  Invited: 3 results) Remarks (3 results)

  • [Journal Article] Electrically detected magnetic resonance study on interface defects at nitrided Si-face, a-face, and m-face 4H-SiC/SiO2 interfaces2020

    • Author(s)
      E. Higa, M. Sometani, H. Hirai, H. Yano, S. Harada, T. Umeda
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 17 Pages: 171602-171602

    • DOI

      10.1063/5.0002944

    • NAID

      120007132633

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electron-spin-resonance and electrically detected-magnetic-resonance characterization on PbC center in various 4HSiC(0001)/SiO2 interfaces2020

    • Author(s)
      T. Umeda, Y. Nakano, E. Higa, T. Okuda, T. Kimoto, T. Hosoi, H. Watanabe, M. Sometani, S. Harada
    • Journal Title

      Journal of Applied Physics

      Volume: 127 Issue: 14 Pages: 145301-145301

    • DOI

      10.1063/1.5134648

    • NAID

      120007132646

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Carbon dangling-bond center (carbon Pb center) at 4H-SiC(0001)/SiO2 interface2020

    • Author(s)
      Umeda T.、Kobayashi T.、Sometani M.、Yano H.、Matsushita Y.、Harada S.
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 7 Pages: 071604-071604

    • DOI

      10.1063/1.5143555

    • NAID

      120007003559

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrically detected-magnetic-resonance identifications of defects at 4H-SiC(000 )/ SiO2 interfaces with wet oxidation2020

    • Author(s)
      T. Umeda, Y. Kagoyama, K. Tomita, Y. Abe, M. Sometani, M. Okamoto, S. Harada, T. Hatakeyama
    • Journal Title

      Applied Physics Letters

      Volume: 115 Issue: 15 Pages: 151602-151602

    • DOI

      10.1063/1.5116170

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anomalous carbon clusters in 4H-SiC/SiO2 interfaces2019

    • Author(s)
      Y. Kagoyama, M. Okamoto, T. Yamasaki, N. Tajima, J. Nara, T. Ohno, H. Yano, S. Harada, and T. Umeda
    • Journal Title

      J. Applied Physics

      Volume: 125 Issue: 6 Pages: 065302-065302

    • DOI

      10.1063/1.5066356

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interface carbon defects at 4H-SiC(0001)/SiO2 interfaces studied by electron-spin-resonance spectroscopy2018

    • Author(s)
      T. Umeda, G.-W. Kim, T. Okuda, M. Sometani, T. Kimoto, S. Harada
    • Journal Title

      Applied Physics Letters

      Volume: 113 Issue: 6 Pages: 061605-061605

    • DOI

      10.1063/1.5041059

    • NAID

      120007127942

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single photon sources in 4H-SiC metal-oxide-semiconductor field-effect transistors2018

    • Author(s)
      Y. Abe, T. Umeda, M. Okamoto, R. Kosugi, S. Harada, M. Haruyama, W. Kada, O. Hanaizumi, S. Onoda, T. Ohshima
    • Journal Title

      Appl. Phys. Lett.

      Volume: 112 Issue: 3

    • DOI

      10.1063/1.4994241

    • NAID

      120007133812

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interface defects in C-face 4H-SiC MOSFETs: An electrically-detected-magnetic-resonance study2017

    • Author(s)
      T. Umeda, M. Okamoto, H. Yoshioka, G.-W. Kim, S. Ma, R. Arai, T. Makino, T. Ohshima, S. Harada
    • Journal Title

      ECS Transactions

      Volume: 80 Issue: 1 Pages: 147-153

    • DOI

      10.1149/08001.0147ecst

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of traps at nitrided SiO2/SiC interfaces near the conduction band edge by using Hall effect measurements2017

    • Author(s)
      T. Hatakeyama, Y. Kiuchi, M. Sometani, S. Harada, D. Okamoto, H. Yano, Y. Yonezawa, H. Okumura
    • Journal Title

      Applied Physics Express

      Volume: 10 Issue: 4 Pages: 046601-046601

    • DOI

      10.7567/apex.10.046601

    • NAID

      210000135827

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of Schottky barrier height on 4H-SiC m-face {1-100} for Schottky barrier diode wall integrated trench MOSFET2017

    • Author(s)
      Y. Kobayashi, H. Ishimori, A. Kinoshita, T. Kojima, M. Takei, H. Kimura, S. Harada
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 56 Issue: 4S Pages: 04CR08-04CR08

    • DOI

      10.7567/jjap.56.04cr08

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] Carbon Pb center (the PbC center) at 4H-SiC(0001)/SiO2 interface2019

    • Author(s)
      T. Umeda, Y. Nakano, E. Higa, H. Yano, M. Sometani, S. Harada
    • Organizer
      30th International Conference on Defects in Semiconductors (ICDS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The PbC (carbon dangling bond) center at 4H-SiC(0001)/SiO2 interface: An EDMR study2019

    • Author(s)
      T. Umeda, T. Kobayashi, Y. Matsushita, E. Higa, H. Yano, M. Sometani, S. Harada
    • Organizer
      International Conference on Silicon Carbide and Related Materials (ICSCRM) 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The PbC (carbon dangling bond) center at 4H-SiC(0001)/SiO2 interface: A first-principles study2019

    • Author(s)
      T. Kobayashi, T. Umeda, Y. Matsushita
    • Organizer
      International Conference on Silicon Carbide and Related Materials (ICSCRM) 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identifications of major and minor interface defects at C-face 4H-SiC/SiO2 interfaces with wet oxidation2019

    • Author(s)
      T. Umeda, Y. Kagoyama, K. Tomita, Y. Abe, M. Sometani, M. Okamoto, T. Hatakeyama, S. Harada
    • Organizer
      International Conference on Silicon Carbide and Related Materials (ICSCRM) 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrically-detected-magnetic-resonance study on interface defects at a-face and m-face 4H-SiC/SiO2 interfaces2019

    • Author(s)
      E. Higa, M. Sometani, S. Harada, H. Yano, T. Umeda
    • Organizer
      International Conference on Silicon Carbide and Related Materials (ICSCRM) 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] C面4H-SiCウェット酸化の特殊性と界面欠陥:EDMR分光からの知見2019

    • Author(s)
      梅田享英,鹿児山陽平,富田和輝,阿部裕太, 岡本光央,畠山哲夫,原田信介
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] C面窒化4H-SiC/SiO2界面の電流検出型電子スピン共鳴分光2019

    • Author(s)
      成ケ澤雅人,比嘉栄斗,染谷満, 畠山哲夫,原田信介,梅田享英
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 4H-SiC Si面・a面・m面界面欠陥の電流検出型電子スピン共鳴分光法による評価2019

    • Author(s)
      比嘉栄斗,染谷満,原田信介,矢野裕司,梅田享英
    • Organizer
      第6回先進パワー半導体分科会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 電流検出電子スピン共鳴分光(EDMR)2019

    • Author(s)
      梅田享英
    • Organizer
      学振145委員会「結晶加工と評価技術」第162回研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Electron-spin-resonance characterization on interface carbon defects at 4H-SiC/SiO2 interfaces formed by ultrahigh-temperature oxidation2018

    • Author(s)
      T. Umeda, T. Hosoi, T. Okuda, T. Kimoto, M. Sometani, S. Harada, H. Watanabe
    • Organizer
      European Conference on Silicon Carbide and Related Materials 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 4H-SiC(0001)/SiO2界面の炭素ダングリングボンド欠陥(PbCセンター)2018

    • Author(s)
      梅田享英、神成田亘平、奥田貴史、木本暢恒、染谷満、原田信介
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 電流検出型電子スピン共鳴による(000-1)4H-SiC/SiO2界面炭素ダングリングボンドの検出2018

    • Author(s)
      鹿児山陽平、梅田享英、染谷満、原田信介、畠山哲夫
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] SiC-MOS界面欠陥の起源:電子スピン共鳴分光の最新の結果より2018

    • Author(s)
      梅田享英
    • Organizer
      先進パワー半導体分科会第5回講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 15NOポストアニール後の4H-SiC MOS界面の窒素ドーピングのESR定量2018

    • Author(s)
      梅田享英,染谷満,原田信介
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Interface carbon defect at Si-face 4H-SiC/SiO2 interfaces detected by electron spin resonance2017

    • Author(s)
      G.-W. Kim, T. Okuda, T. Kimoto, T. Umeda
    • Organizer
      International Conference on Silicon Carbide and Related Materials (ICSCRM) 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Oxidation-process dependence of single photon sources embedded in 4H-SiC MOSFETs2017

    • Author(s)
      Y. Abe, T. Umeda, M. Okamoto, R. Kosugi, S. Harada, M. Haruyama, W. Kada, O. Hanaizumi, S. Onoda, T. Ohshima
    • Organizer
      International Conference on Silicon Carbide and Related Materials (ICSCRM) 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interface defects related to threshold-voltage shift in C-face 4H-SiC MOSFETs: An EDMR study2017

    • Author(s)
      T. Umeda, M. Okamoto, H. Yoshioka, G.-W. Kim, S. Ma, R. Arai, T. Makino, T. Ohshima, S. Harada
    • Organizer
      232nd Electrochemical Society Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 電子スピン共鳴分光研究室(筑波大学・梅田研究室)

    • URL

      http://esrlab.bk.tsukuba.ac.jp/

    • Related Report
      2019 Annual Research Report
  • [Remarks] EPR in Semiconductors

    • URL

      http://esrlab.bk.tsukuba.ac.jp/div-media/epr/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 筑波大学・梅田研究室(電子スピン共鳴分光研究室)

    • URL

      http://esrlab.bk.tsukuba.ac.jp/

    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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