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2008 Fiscal Year Final Research Report

Clarification and the control of growth mode in bulk GaN crystal growth by ammonothermal method

Research Project

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Project/Area Number 18360004
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied materials science/Crystal engineering
Research InstitutionTohoku University

Principal Investigator

KAGAMITANI Yuji  Tohoku University, 多元物質科学研究所, 寄附研究部門教員 (40396536)

Co-Investigator(Renkei-kenkyūsha) FUKUDA Tsuguo  東北大学, 原子分子材料科学高等研究機構, 連携教授 (30199236)
Research Collaborator DIRK Ehrentraut  東北大学, 原子分子材料科学高等研究機構, 准教授 (50396537)
YOSHIKAWA Akira  東北大学, 多元物質科学研究所, 准教授 (50292264)
OGINO Hiraku  東京大学, 大学院・工学系研究科, 助教 (70359545)
Project Period (FY) 2006 – 2008
Keywords結晶成長 / 結晶工学 / 環境材料 / 省エネルギー / 高性能レーザー / 窒化物半導体
Research Abstract

アモノサーマル法によるGaN結晶作製を行い、GaNにおいても水熱合成法で実績のあるZnOと同じように結晶成長方位の制御が可能であることを見出した。また、30日間の長期育成にも成功し、透明なGaN作製に成功した。育成速度の高速化には、アンモニアのクラッキング状態が大きく影響することを明らかにし、アンモニア合成・分解触媒のタングステンを加えることで、最大で育成速度が28倍向上した。

  • Research Products

    (35 results)

All 2009 2008 2007 2006 Other

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (27 results) Book (2 results)

  • [Journal Article] Ammonothermal synthesis of thick gallium nitride film employing acidic mineralizers2008

    • Author(s)
      D. Ehrentraut, K. Kagamitani, A. Yoshikawa, N. oshino, H. Itoh, S. Kawabata, K. Fujii, T. Yao,and T. Fukuda
    • Journal Title

      J.Mater.Sci. 43

      Pages: 2270-2275

    • Peer Reviewed
  • [Journal Article] Physico-chemical features of the acidic ammonothermal growth of GaN2008

    • Author(s)
      D. Ehrentraut, K. Kagamitani, C. Yokoyama, T. Fukuda
    • Journal Title

      J.Cryst.Growth 310

      Pages: 891-895

    • Peer Reviewed
  • [Journal Article] State-of-the-art and prospective for mass-producband gap semiconductor crystals ZnO and GaN by solvothermal technology2007

    • Author(s)
      D. Ehrentraut
    • Journal Title

      日本結晶成長学会誌 Vol.34 No.1

      Pages: 3-10

  • [Journal Article] Prospects for the ammonothermal growth of large GaN crystal2007

    • Author(s)
      T. Fukuda and D. Ehrentraut
    • Journal Title

      J.Cryst.Growth 305,304-310

      Pages: 59-65

    • Peer Reviewed
  • [Journal Article] Temperature effect of ammonium halogenides as mineralizers onphase stability of gallium nitride synthesized under acidic ammonothermal conditions2007

    • Author(s)
      D. Ehrentraut, N. Hoshino, Y. Kagamitani, A. oshikawa, T.Fukuda, H. Itoh and S. Kawabata
    • Journal Title

      J.Mater.Chem. 17(9),886-893

      Pages: 51-58

    • Peer Reviewed
  • [Journal Article] Ammonothermal epitaxy of thick GaN film using NH_4Cl mineralizer2006

    • Author(s)
      Y. Kagamitani, D. Ehrentraut, A. Yoshikawa, N. Hoshino, T. Fukuda, S. Kawabata and K. Inaba
    • Journal Title

      Jpn.J.Appl.Phys Part 1 45(5A)

      Pages: 4018-4020

    • Peer Reviewed
  • [Presentation] アモノサーマル法における炉内温度差が原料搬送に及ぼす影響2009

    • Author(s)
      鏡谷勇二
    • Organizer
      第56回応用物理学関係連合講演会
    • Place of Presentation
      茨城県つくば市
    • Year and Date
      20090330-0402
  • [Presentation] アクティブアモノサーマル法によるGaNバルク結晶作製2009

    • Author(s)
      鏡谷勇二
    • Organizer
      日本学術振興会第161・162委員会合同研究会「デバイスに求められるワイドギャップ半導体のバルク・エピ成長技術」
    • Place of Presentation
      三重県鳥羽市
    • Year and Date
      20090313-14
  • [Presentation] アクティブアモノサーマル法によるGaN単結晶作製2009

    • Author(s)
      鏡谷勇二
    • Organizer
      東北大学多元物質科学研究所窒化物ナノ・エレクトロニクス材料研究センター講演会
    • Place of Presentation
      仙台
    • Year and Date
      2009-10-30
  • [Presentation] 安熱合成法によるGaN結晶へのドーピング結晶中の不純物制御2008

    • Author(s)
      鏡谷勇二
    • Organizer
      第69回応用物理学会学術講演会
    • Place of Presentation
      愛知県春日井
    • Year and Date
      20080902-05
  • [Presentation] Ammonothermal Growth of GaN on Non-polr Plane under Acidic Conditions2008

    • Author(s)
      Y. Kagamitani
    • Organizer
      Second Internati onal Symposium on Growth of III-Nitrides
    • Place of Presentation
      Izu,Japan
    • Year and Date
      20080706-09
  • [Presentation] High quality GaN growth by the ammonothermal method with acidic mineralizer2008

    • Author(s)
      鏡谷勇二
    • Organizer
      応用物理学会2008春季学術講演会
    • Place of Presentation
      千葉
    • Year and Date
      20080327-30
  • [Presentation] 酸性鉱化剤を用いたアモノサーマル法による高品質GaN結晶育成2008

    • Author(s)
      鏡谷勇二
    • Organizer
      応用物理学会結晶工学分科会2008年・年末講演会,宝石から学ぶ結晶工学と若手ポスター発表会
    • Place of Presentation
      東京目白
    • Year and Date
      2008-12-11
  • [Presentation] Improved growth conditions for GaN by the acidic ammonothermal route2007

    • Author(s)
      D. Ehrentraut
    • Organizer
      ISCS 2007
    • Place of Presentation
      Kyoto,JAPAN
    • Year and Date
      20071016-18
  • [Presentation] GaN growth on a- and m-plane by the ammonothermal methwith acidic mineralizer2007

    • Author(s)
      Y. Kagamitani
    • Organizer
      ISCS 2007
    • Place of Presentation
      Kyoto,JAPAN
    • Year and Date
      20071016-18
  • [Presentation] Acidic ammonothermal growth of gallium nitride2007

    • Author(s)
      D. Ehrentraut
    • Organizer
      IUMRS-ICAM 2007
    • Place of Presentation
      Bangalore,INDIA
    • Year and Date
      20071008-13
  • [Presentation] Ammonothermal growth of GaN2007

    • Author(s)
      D. Ehrentraut
    • Organizer
      IWBNS-5
    • Place of Presentation
      Salvador,BRAZIL
    • Year and Date
      20070924-29
  • [Presentation] GaN grown by ammonothermal method2007

    • Author(s)
      Y. Kagamitani
    • Organizer
      応用物理学会2007秋季学術講演会
    • Place of Presentation
      札幌
    • Year and Date
      20070904-05
  • [Presentation] Growth and characterization of gallder acidic ammonothermal conditions2007

    • Author(s)
      D. Ehrentraut
    • Organizer
      The 15^<th> International Conference on Crystal Growth, Poster session Wide Band Gap Bulk & Epitaxial Growth
    • Place of Presentation
      Salt Lake City,Utah,USA,Oral
    • Year and Date
      20070812-17
  • [Presentation] Effect of temperature and mineralizer on phase stability of gallium nitride prepared under acidic ammonothermal conditions2007

    • Author(s)
      Y. Kagamitani
    • Organizer
      The 15^<th> International Conference on Crystal Growth, session Wide Band Gap Bulk & Epitaxial Growth
    • Place of Presentation
      Salt Lake City,Utah,USA
    • Year and Date
      20070812-17
  • [Presentation] Effect of temperature and mineralizer on phase stability of gallium nitride prepared under acidic ammonothermal conditions2007

    • Author(s)
      D. Ehrentraut
    • Organizer
      The European Materials Research Society Spring Meeting
    • Place of Presentation
      Strasbourg,FRANCE
    • Year and Date
      20070526-0606
  • [Presentation] Ammonothermal growth of thick GaN films2007

    • Author(s)
      Y. Kagamitani
    • Organizer
      Poland-Japan-Germany Workshop
    • Place of Presentation
      Zakopane,POLAND
    • Year and Date
      20070521-25
  • [Presentation] Effect of temperature and mineralizer on phase stability and solubility of gallium under acidic ammonothermal conditions2007

    • Author(s)
      D. Ehrentraut
    • Organizer
      Poland-Japan-Germany Workshop
    • Place of Presentation
      Zakopane,POLAND
    • Year and Date
      20070521-25
  • [Presentation] 酸性鉱化剤を用いた安熱合成法によるGaNのa面及びm面成長2007

    • Author(s)
      鏡谷勇二
    • Organizer
      第54回応用物理学関係連合講演会(春季)
    • Place of Presentation
      神奈川県相模原市
    • Year and Date
      20070327-30
  • [Presentation] GaN growth by the ammonothermal method with acidic mineralizer2007

    • Author(s)
      Y. Kagamitani
    • Organizer
      第2回日本フラックス成長研究発表会
    • Place of Presentation
      仙台
    • Year and Date
      2007-12-14
  • [Presentation] Ammonothermal Growth of GaN on Polar and Nonpolar Seeds2007

    • Author(s)
      鏡谷勇二
    • Organizer
      第7回東北大学多元物質科学研究所研究発表会
    • Place of Presentation
      仙台
    • Year and Date
      2007-12-12
  • [Presentation] Growth of thick GaN by ammonothermal method using acidic mineralizer2007

    • Author(s)
      Y. Kagamitani
    • Organizer
      2007 International Conference on Crystal Technology and KACG Spring Meeting & 2^<nd> International Symposium for Nano and Advanced Materials
    • Place of Presentation
      Naju,KOREA
    • Year and Date
      2007-06-02
  • [Presentation] 酸性鉱化剤を用いた安熱合成法による高品質GaN単結晶作製2007

    • Author(s)
      鏡谷勇二
    • Organizer
      日本結晶成長学会特別講演会・日本学術振興会161委員会第54回研究会
    • Place of Presentation
      東京
    • Year and Date
      2007-04-13
  • [Presentation] Optimizing growth conditions for gallium nitride unacidic ammonothermal conditions2006

    • Author(s)
      D. Ehrentraut
    • Organizer
      Materials Research Society Fall Meeting(MRS 2006)
    • Place of Presentation
      Boston, USA
    • Year and Date
      20061128-30
  • [Presentation] Effect of Temperature and Mineralizer on Phase Stability of Gallium Nitride Prepared Under Acidic Ammonothermal Conditions2006

    • Author(s)
      D. Ehrentraut
    • Organizer
      International Workshop on Nitride Semiconductors 2006(IWN2006)
    • Place of Presentation
      Kyoto,JAPAN
    • Year and Date
      20061022-27
  • [Presentation] Ammonothermal Homoepitaxy of Thick Gallium Nitride Films2006

    • Author(s)
      Y. Kagamitani
    • Organizer
      International Workshop on Nitride Semiconductors 2006(IWN2006)
    • Place of Presentation
      Kyoto,JAPAN
    • Year and Date
      20061022-27
  • [Presentation] Ammonothermal Epit axy of Thick GaN Film Using NH_4Cl Mineralizer2006

    • Author(s)
      Y. Kagamitani
    • Organizer
      6^<th> Meeting of Institute of Multidisciplinary Research for Advanced Materials
    • Place of Presentation
      Sendai,JAPAN
    • Year and Date
      2006-12-08
  • [Presentation] Approach for high quality bulk GaN growth by the ammonothermal method2006

    • Author(s)
      Y. Kagamitani
    • Organizer
      6^<th> Meeting of Institute of Multidisciplinary Research for Advanced Materials
    • Place of Presentation
      Sendai, JAPAN
    • Year and Date
      2006-12-08
  • [Book] Electronic Journal別冊2009化合物半導体技術大全

    • Author(s)
      福田承生
    • Total Pages
      324
    • Publisher
      電子ジャーナル
  • [Book] アモノサーマル法(安熱合成法)によるGaN単結晶作製

    • Author(s)
      鏡谷勇二, 福田承生
    • Publisher
      シーエムシー出版(In press)

URL: 

Published: 2010-06-10   Modified: 2021-04-07  

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