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2016 Fiscal Year Annual Research Report

Science of Hetero-Interface of Advanced Power Devises in Extreme Environments

Research Project

Project/Area Number 24226017
Research InstitutionOsaka University

Principal Investigator

菅沼 克昭  大阪大学, 産業科学研究所, 教授 (10154444)

Co-Investigator(Kenkyū-buntansha) 酒 金テイ  大阪大学, 産業科学研究所, 招へい准教授 (00467622)
長尾 至成  大阪大学, 産業科学研究所, 准教授 (10315054)
菅原 徹  大阪大学, 産業科学研究所, 助教 (20622038)
Project Period (FY) 2012-05-31 – 2017-03-31
Keywords超高耐熱実装技術 / 銀スパッタ膜接合 / メタル・ペースト焼結接合 / 光接合 / 次世代半導体 / ウィスカ― / ナノ構造制御 / エレクトロマイグレーション
Outline of Annual Research Achievements

SiC や GaN 等の次世代ワイドバンドギャップ半導体を用いて、従来のSi技術では到達できない極限環境で動作するパワーデバイスに実装するためには、異相界面における熱的、機械的、電気的に最適化された材料選択と界面設計指針が必要不可欠である。しかしながら本研究の開始当初には、その指針は全く示されていなかった。本研究では、研究代表者である菅沼克昭が開発して、世界初のハイブリッド自動車に採用されたDBA接合技術と、世界に先駆けた鉛フリー接合技術を元に、極めて厳しい環境で駆動できるパワーデバイスを実現する異相界面設計技術として、下記の新技術を開発している。
①サブミクロン銀粒子を用いたポーラス焼結構造による応力緩和・高放熱接合構造の開発。形状制御した銀粒子及び、銅粒子の新規合成方法とそれを用いた耐熱接合技術。
②純Znを用いた高耐熱接合方法の耐酸化性改善策の提案。
③大電流負荷エレクトロマイグレーション(EM)の評価装置を完成し、Ag焼結合部材の評価を行なった。
④極限温度サイクルにおけるウィスカ発生メカニズムを解明し、Ag蒸着薄膜では熱膨張による応力がマイグレーションを生ずることを発見した。この現象を利用して、大気中で低温・無加圧で完全な接合ができるストレス・マイグレーション(SM)接合方法を提案し、世界の注目を集めている。この現象のナノレベルでの解明を進めると共に、デバイス実装技術への展開を進めている。
これらの研究結果を元に、Ag表面の酸化還元反応に注目した、学術的に新しい金属焼結現象メカニズムを提案すると共に、次世代パワーデバイスの実装に向けた接合界面設計の最適化を着実に進めている。これらの研究実績は多数の学術論文や学会発表、新聞発表などで情報発信されている。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

  • Research Products

    (20 results)

All 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Acknowledgement Compliant: 6 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 9 results,  Invited: 7 results) Book (1 results)

  • [Int'l Joint Research] Siemens(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      Siemens
    • # of Other Institutions
      3
  • [Journal Article] In situ bridging effect of Ag2O on pressureless and low-temperature sintering of micron-scale silver paste2017

    • Author(s)
      H. Zhang, Y. Gao, J. Jiu, K. Suganuma
    • Journal Title

      J. Alloys Compd.

      Volume: 696 Pages: 123-129

    • DOI

      10.1016/j.jallcom.2016.11.225

    • Peer Reviewed / Open Access
  • [Journal Article] Thermal fatigue of silicon carbide-doped silver microflake sinter joints used for die attachment in silicon/silicon carbide power devices2017

    • Author(s)
      H. Zhang, C. Chen, S. Nagao, K. Suganum
    • Journal Title

      J. Electron. Mater.

      Volume: 46 Pages: 1055-1060

    • DOI

      10.1007/s10854-015-3894-2

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Macroscale and microscale fracture toughness of microporous sintered Ag for applications in power electronic devices2017

    • Author(s)
      C. Chen, S. Nagao, K. Saganuma, J. Jiu, T. Sugahara, H. Zhang, T. Iwashige, K. Sugiura, T. Tsuruta
    • Journal Title

      Acta Mater.

      Volume: 129 Pages: 41-51

    • DOI

      10.1016/j.actamat.2017.02.065

    • Peer Reviewed
  • [Journal Article] High reliable and high conductive submicron Cu particle patterns fabricated by low temperature heat-welding and subsequent flash light sinter-reinforcement2017

    • Author(s)
      W. Li, H. Zhang, Y. Gao, J. Jiu, C.-F. Li, C. Chen, D. Hu, Y. Goya, Y. Wang, H. Koga, S. Nagao, K. Suganuma
    • Journal Title

      J. Mater. Chem

      Volume: 5 Pages: 1155-1164

    • DOI

      10.1039/C6TC04892G

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Mechanical deformation of sintered porous Ag die-attach at high temperature and its effect size for wide-bandgap power devices design2017

    • Author(s)
      C. Chen, S. Nagao, K. Suganuma
    • Journal Title

      J. Electron. Mater.

      Volume: 46 Pages: 1576-1586

    • DOI

      10.1007/s11664-016-5200-3

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effects of intermetallic-forming element additions on microstructure and corrosion behavior of SnZn solder alloys2016

    • Author(s)
      J.-C. Liu, Z.-H. Wang, J.-Y. Xie, J.-S. Ma, Q.-Y. Shi, G. Zhang, K. Suganuma
    • Journal Title

      Corrosion Science

      Volume: 112 Pages: 150-159

    • DOI

      10.1016/j.corsci.2016.07.004

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Understanding corrosion mechanism of Sn-Zn alloys in NaCl solution via corrosion products characterization2016

    • Author(s)
      J.-C. Liu, Z.-H. Wang, J.-Y. Xie, J.-S. Ma, G. Zhang, K. Suganuma
    • Journal Title

      Materials and Corrosion

      Volume: 67 Pages: 522-530

    • DOI

      10.1002/maco.20150860

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Self-healing of cracks in Ag joining layer for die-attachment in power devices2016

    • Author(s)
      C. Chen, S. Nagao, K. Suganuma, J. Jiu, H. Zhang, T. Sugahara, T. Iwashige, K. Sugiura, K. Tsuruta
    • Journal Title

      Appl. Phys. Lett.

      Volume: 109 Pages: 093503-1-5

    • DOI

      10.1063/1.4962333

    • Peer Reviewed
  • [Journal Article] Nano-volcanic eruption of silver2016

    • Author(s)
      S.-K. Lin, S. Nagao, E. Yokoi, C. Oh, H. Zhang, Y.-C. Liu, S.-G. Lin, K. Suganuma
    • Journal Title

      Scientific Report

      Volume: 6 Pages: 34769-1-9

    • DOI

      10.1038/srep34769

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Heat-resistant Ag sinter joining wiring for wide band gap power semiconductors2017

    • Author(s)
      K. Suganuma
    • Organizer
      International Welding & Joining Conference - Korea 2017 (IWJC2017)
    • Place of Presentation
      Gyeongju
    • Year and Date
      2017-04-12 – 2017-04-14
    • Int'l Joint Research / Invited
  • [Presentation] Metal-paste sintering die-attach for high temperature power devices2017

    • Author(s)
      S. Nagao, H. Zhang, C. Chen, A. Shimoyama, K. Suganuma
    • Organizer
      International Welding & Joining Conference - Korea 2017 (IWJC2017)
    • Place of Presentation
      Gyeongju
    • Year and Date
      2017-04-12 – 2017-04-14
    • Int'l Joint Research / Invited
  • [Presentation] Bonding technology for large area by silver stress migration bonding2017

    • Author(s)
      S. Noh, C. Chen, T. Ishina, S. Nagao, K. Suganuma
    • Organizer
      International Welding & Joining Conference - Korea 2017 (IWJC2017)
    • Place of Presentation
      Gyeongju
    • Year and Date
      2017-04-12 – 2017-04-14
    • Int'l Joint Research
  • [Presentation] Interconnection Technology for WBG Power Devices2016

    • Author(s)
      K. Suganuma
    • Organizer
      15th International Symposium on Microelectronics and Packaging (ISMP 2016)
    • Place of Presentation
      Seoul
    • Year and Date
      2016-10-24 – 2016-10-27
    • Int'l Joint Research / Invited
  • [Presentation] Nano-ink development for wearable printed electronics2016

    • Author(s)
      K. Suganuma, M. Nogi, H. Koga, J. Jiu, and T. Sugahara
    • Organizer
      International Conference on Radiation Curing in Asia
    • Place of Presentation
      Tokyo
    • Year and Date
      2016-10-24 – 2016-10-27
    • Int'l Joint Research / Invited
  • [Presentation] Polyol synthesis of metallic nanomaterials for wiring and interconnection of advance electronics2016

    • Author(s)
      K. Suganuma
    • Organizer
      2nd International Conference on Polyol Mediated Synthesi(ICPMS2016)
    • Place of Presentation
      Hikone
    • Year and Date
      2016-07-11 – 2016-07-13
    • Int'l Joint Research / Invited
  • [Presentation] Silver nanowires sensor prepared with polyol process2016

    • Author(s)
      Chunhui Wu, J.Jiu, K.Suganuma
    • Organizer
      2nd International Conference on Polyol Mediated Synthesi(ICPMS2016)
    • Place of Presentation
      Hikone
    • Year and Date
      2016-07-11 – 2016-07-13
    • Int'l Joint Research
  • [Presentation] Ag Sinter Joining and Stress Migration Bonding for WBG Die Attach2016

    • Author(s)
      K. Suganuma
    • Organizer
      International Symposium on 3D Power Electronics Integration and Manufacturing
    • Place of Presentation
      Raleigh
    • Year and Date
      2016-06-13 – 2016-06-15
    • Int'l Joint Research / Invited
  • [Presentation] Silver Sinter Joining for WBG Die-Attach2016

    • Author(s)
      K. Suganuma
    • Organizer
      2016 MRS Spring Meeting & Exhibit
    • Place of Presentation
      Phoenix
    • Year and Date
      2016-04-01 – 2016-04-01
    • Int'l Joint Research / Invited
  • [Book] シーエムシー2016

    • Author(s)
      菅沼克昭
    • Total Pages
      278
    • Publisher
      次世代パワー半導体実装の要素技術と信頼性

URL: 

Published: 2018-01-16  

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