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Growth of High-Quality Indium-Based Nitride Semiconductors by High-Pressure, High-Temperature Thermal Processing and Their Application to Thermoelectric Devices

Research Project

Project/Area Number 21H01831
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 30010:Crystal engineering-related
Research InstitutionRitsumeikan University

Principal Investigator

Tsutomu Araki  立命館大学, 理工学部, 教授 (20312126)

Co-Investigator(Kenkyū-buntansha) 毛利 真一郎  立命館大学, 理工学部, 准教授 (60516037)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2023: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2022: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Keywords半導体 / 窒化インジウム / 分子線エピタキシー / 透過電子顕微鏡 / 結晶成長 / 結晶欠陥 / TEM / 窒化物半導体 / 熱処理
Outline of Research at the Start

本研究課題においては、いまだp型伝導制御が実現されていない窒化インジウム(InN)に対して、平衡状態を実現する高圧高温熱処理(アニール)を施すことにより、従来の枠を超えた結晶高品質化を目指し、それをベースとしてp型伝導制御によるInNのデバイス品質結晶実現を目的とする。窒素の平衡蒸気圧が高いInNを約1GPaの加圧窒素雰囲気下で高温(約600℃)アニールし、小傾角粒界の解消による転位密度の劇的な低減効果を検証する。またMgドーピングしたInN、InGaN混晶、ヘテロ接合、ナノ構造に対する高圧高温処理の有効性についても検討する。

Outline of Final Research Achievements

In this study, we prepared InN crystals using the RF-MBE method and aimed to improve crystal quality by high-temperature and high-pressure thermal treatment. In FY2023, we continued to elucidate the initial growth mechanism in detail and to evaluate the results of the second year's heat treatment. Although we were unable to confirm improvements such as a decrease in dislocation density, we did model the process of generating abnormal growth regions. We believe that this research has established important basic data for improving the quality of InN crystals.

Academic Significance and Societal Importance of the Research Achievements

本研究では、いまだ残留キャリア濃度や貫通転位などの結晶欠陥が多く、伝導制御やデバイス応用が実現されていないInNに対して、高温・高圧熱処理による貫通転位密度低減を目指した。その課程において、DERI法成長InNにおける成長条件の影響を詳細に検討することができた。さらにTEMを用いた緻密な極微構造観察により、Inドロップレットが関与する異常成長領域の成長モデルを構築することができた。これらはRF-MBE法を用いたInN結晶成長のさらなる理解に大きく役立つものである。一方、高温・高圧熱処理の効果については、試料サイズの問題から熱処理後の比較評価が十分に行えず、実験方法を含めた再検討が必要である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (51 results)

All 2024 2023 2022 2021

All Journal Article (12 results) (of which Peer Reviewed: 12 results,  Open Access: 1 results) Presentation (38 results) (of which Int'l Joint Research: 8 results,  Invited: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Suppression of Mixing of Metastable Zincblende Phase in GaN Crystal Grown on ScAlMgO4 Substrates by Radio‐Frequency Plasma‐Assisted Molecular Beam Epitaxy2024

    • Author(s)
      Deura Momoko、Wada Yuichi、Fujii Takashi、Araki Tsutomu
    • Journal Title

      physica status solidi (b)

      Volume: 261 Issue: 11 Pages: 2400047-2400047

    • DOI

      10.1002/pssb.202400047

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 原子層モアレ超格子系におけるフォノン物性制御2024

    • Author(s)
      毛利真一郎、荒木努
    • Journal Title

      応用物理

      Volume: 94 Pages: 174-177

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electronic Materials Accelerating the Development of Ubiquitous Devices2023

    • Author(s)
      荒木努, 出浦桃子, 藤井高志
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 72 Issue: 9 Pages: 689-694

    • DOI

      10.2472/jsms.72.689

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2023-09-15
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Substrate Terrace Width Dependence of Direct Growth of GaN on ScAlMgO4 by Radio-Frequency Molecular Beam Epitaxy2023

    • Author(s)
      Yuichi Wada, Momoko Deura, Yuya Kuroda, Naoki Goto, Seiya Kayamoto, Takashi Fujii, Shinichiro Mouri, Tsutomu Araki
    • Journal Title

      Physica status solidi B

      Volume: 260 Issue: 7 Pages: 202300029-202300029

    • DOI

      10.1002/pssb.202300029

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Control of Metal-Rich Growth for GaN/AlN Superlattice Fabrication on Face-to-Face-Annealed Sputter-Deposited AlN Templates2023

    • Author(s)
      Naoya Mokutani, Momoko Deura, Shinichiro Mouri, Kanako Shojiki, Shiyu Xiao, Hideto Miyake, Tsutomu Araki
    • Journal Title

      Physica status solidi B

      Volume: 260 Issue: 9 Pages: 2300061-2300061

    • DOI

      10.1002/pssb.202300061

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of HCl concentration in source solution and growth temperature on formation of α-Ga2O3 film via mist-CVD process2023

    • Author(s)
      Wakamatsu Takeru、Takane Hitoshi、Kaneko Kentaro、Araki Tsutomu、Tanaka Katsuhisa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Issue: SF Pages: SF1024-SF1024

    • DOI

      10.35848/1347-4065/acc9cf

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 分子線エピタキシー法を用いた窒化物半導体結晶成長の最前線2023

    • Author(s)
      荒木努,出浦桃子,藤井高志,毛利真一郎
    • Journal Title

      応用物理

      Volume: 92 Pages: 622-626

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct growth of GaN film on ScAlMgO4 substrate by radio-frequency plasma- excited molecular beam epitaxy2023

    • Author(s)
      T. Araki, S. Kayamoto, Y. Wada, Y. Kuroda, D. Nakayama, N. Goto, M. Deura, S. Mouri, T. Fujii, T. Fukuda, Y. Shiraishi, and R. Sugie
    • Journal Title

      Applied Physics Express

      Volume: 16 Issue: 2 Pages: 025504-025504

    • DOI

      10.35848/1882-0786/acb894

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth of Ga2O3 Film on ScAlMgO4 Substrate by Mist-Chemical Vapor Deposition2023

    • Author(s)
      S. Yamashita, R. Moriya, H. Takane, Y. Wada, Y. Yamafuji, J. Kikawa, M. Matsukura, T. Kojima, T. Shinohe, K. Kaneko, T. Araki
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 62 Issue: SF Pages: SF1012-SF1012

    • DOI

      10.35848/1347-4065/acbf5a

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Study of the contact resistance of α-Ga2O3 on m-plane sapphire substrate with respect to Sn concentration using the circular transfer length method2023

    • Author(s)
      Y. Yamafuji, J. Kikawa, S. Yamashita, T. Shinohe, T. Araki
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 62 Issue: SF Pages: SF1014-SF1014

    • DOI

      10.35848/1347-4065/acc03b

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nitrogen Radical Beam Irradiation on InN Film for Surface Modification2022

    • Author(s)
      T. Araki, F. Abas, N. Goto, R. Fujita, and S. Mouri
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 71 Issue: 10 Pages: 824-829

    • DOI

      10.2472/jsms.71.824

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2022-10-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Repeatability and Mechanisms of Threading Dislocation Reduction in InN Film Grown with In Situ Surface Modification by Radical Beam Irradiation2021

    • Author(s)
      T. Araki, F. Abas, R. Fujita and S. Mouri
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 70 Issue: 10 Pages: 732-737

    • DOI

      10.2472/jsms.70.732

    • NAID

      130008105967

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2021-10-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] RF-MBE法を用いた低温AlN結晶成長に関する研究2024

    • Author(s)
      河上結馬, 出浦桃子, 荒木努
    • Organizer
      令和5年度日本材料学会半導体エレクトロニクス部門委員会第3回研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 低転位密度AlNテンプレート基板上へのAlGaNのRF-MBE成長2024

    • Author(s)
      笠井 遼太郎、田中 練、出浦 桃子、漆山 真、赤池 良太、中村 孝夫、三宅 秀人、荒木 努
    • Organizer
      2024年春季第71回応用物理学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] InAlN熱電薄膜のRF-MBEにおける成長温度依存性2024

    • Author(s)
      服部 翔太、荒木 努、出浦 桃子
    • Organizer
      2024年春季第71回応用物理学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] InAlNのRF-MBE成長における原料フラックス依存性2023

    • Author(s)
      服部 翔太, 荒木 努, 出浦 桃子
    • Organizer
      第15回ナノ構造エピタキシャル成長講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ScAlMgO4基板上InGaNのRF-MBE成長におけるIn組成の成長温度依存性2023

    • Author(s)
      久保 祐太, 山田 泰弘, 後藤 直樹, 出浦 桃子, 藤井 高志, 荒木 努
    • Organizer
      第15回ナノ構造エピタキシャル成長講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ScAlMgO4基板上RF-MBE成長InGaN薄膜の極微構造評価2023

    • Author(s)
      山田泰弘, 久保祐太, 和田邑一, 出浦桃子, 藤井高志, 荒木努
    • Organizer
      2023年秋季第84回応用物理学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] RF-MBE法を用いた低温AIN成長のAI/N比依存性2023

    • Author(s)
      河上結馬, 荒木努, 出浦桃子
    • Organizer
      2023年秋季第84回応用物理学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] InAlN熱電薄膜のRF-MBE成長2023

    • Author(s)
      服部 翔太, 荒木 努, 出浦 桃子
    • Organizer
      2023年秋季第84回応用物理学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] InGaN熱電薄膜の結晶成長と特性評価2023

    • Author(s)
      出浦 桃子, 服部 翔太, 荒木 努
    • Organizer
      2023年秋季第84回応用物理学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ScAlMgO4基板上InGaNのRF-MBE成長におけるIn組成制御2023

    • Author(s)
      出浦 桃子, 久保 祐太, 山田 泰弘, 藤井 高志, 荒木 努
    • Organizer
      2023年秋季第84回応用物理学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Study on Al/N ratio dependence of low-temperature AlN growth using RF-MBE2023

    • Author(s)
      Y. Kawakami, Y. Yamada, M. Deura, T. Araki
    • Organizer
      第 42 回電子材料シンポジウム(EMS-42)
    • Related Report
      2023 Annual Research Report
  • [Presentation] RF-MBE and characterization of InGaN and InAlN thermoelectric films2023

    • Author(s)
      S. Hattori, M. Deura, T. Araki
    • Organizer
      第 42 回電子材料シンポジウム(EMS-42)
    • Related Report
      2023 Annual Research Report
  • [Presentation] RF-MBE法によるp型GaN実現に向けた成長条件の検討2023

    • Author(s)
      榊原匠海, 出浦桃子, 荒木努
    • Organizer
      第52回結晶成長国内会議(JCCG-52)
    • Related Report
      2023 Annual Research Report
  • [Presentation] RF-MBE Growth of GaN on ScAlMgO4 Substrate2023

    • Author(s)
      T. Araki, Y. Wada, Y. Kuroda, S. Kayamoto, N. Goto, M. Deura, T. Fuji, Y. Shiraishi, T. Fukuda
    • Organizer
      23rd American Conference on Crystal Growth(ACCGE-23)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Suppression of Metastable Cubic Phase Inclusion in GaN Growth on ScAlMgO4 Substrates by RF-MBE2023

    • Author(s)
      T. Araki, Y. Wada, Y. Kuroda, N. Goto, Y. Kubo, M. Deura, S. Mouri, T. Fujii
    • Organizer
      14th International Conference on Nitride Semiconductors(ICNS-14)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RF-MBE growth and characterization of InGaN thermoelectric thin film2023

    • Author(s)
      M. Deura, S. Hattori, T. Araki
    • Organizer
      14th International Conference on Nitride Semiconductors(ICNS-14)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RF-MBE growth of InAlN thermoelectric thin film2023

    • Author(s)
      S. Hattori, T. Araki, M. Deura
    • Organizer
      14th International Conference on Nitride Semiconductors(ICNS-14)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] AI/N Ratio Dependence of Low Temperature AlN Growth by RF-MBE2023

    • Author(s)
      Y. Kawakami, Y. Yamada, M. Deura, T. Araki
    • Organizer
      14th International Conference on Nitride Semiconductors(ICNS-14)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Control of In content in InGaN on ScAlMgO4 substrates using RF-MBE2023

    • Author(s)
      Y. Kubo, Y. Yamada, M. Deura, T. Fujii, T. Araki
    • Organizer
      14th International Conference on Nitride Semiconductors(ICNS-14)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ScAlMgO4基板上GaNのRF-MBE成長における準安定相混在の抑制2023

    • Author(s)
      和田 邑一, 黒田 悠弥, 後藤 直樹, 久保 祐太, 出浦 桃子, 藤井 高志, 毛利 真一郎, 荒木 努
    • Organizer
      2023年春季第70回応用物理学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Growth of GaN on ScAlMgO4 Substrate by RF-MBE2023

    • Author(s)
      T. Araki, N. Goto, M. Deura, Y. Kuroda, Y. Wada, T. Fujii, S. Mouri, Y. Shiraishi, T.Fukuda
    • Organizer
      International Symposium on Advanced Plasma Science and its Applications (ISPlasma 2023)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] RF-MBE 成長 DERI 法における InN の初期成長機構2022

    • Author(s)
      山田 泰弘, 中村 亮佑, 後藤 直樹, 毛利 真一郎, 出浦 桃子, 荒木 努
    • Organizer
      2022 年度 半導体エレクトロニクス部門委員会 第1回研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] RF-MBE 法を用いた GaN 成長に対する GaN 自立基板の微小オフ角依存性2022

    • Author(s)
      榊原 匠海, 出浦 桃子, 毛利 真一郎, 荒木 努
    • Organizer
      2022 年度 半導体エレクトロニクス部門委員会 第1回研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] RF-MBE成長DERI法におけるInNの初期成長機構2022

    • Author(s)
      山田 泰弘, 中村 亮佑, 後藤 直樹, 毛利 真一郎, 出浦 桃子, 荒木 努
    • Organizer
      2022年秋季第83回応用物理学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] GaNのRF-MBE成長におけるGaN自立基板の微小オフ角依存性2022

    • Author(s)
      榊原 匠海, 出浦 桃子, 毛利 真一郎, 荒木 努
    • Organizer
      2022年秋季第83回応用物理学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] RF-MBE法を用いたScAlMgO4基板上GaN成長における成長初期過程の検討2022

    • Author(s)
      和田 邑一, 黒田 悠弥, 後藤 直樹, 藤井 高志, 毛利 真一郎, 出浦 桃子, 荒木 努
    • Organizer
      2022年秋季第83回応用物理学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ScAlMgO4基板上へのGaNのRF-MBE成長における基板表面窒化の効果2022

    • Author(s)
      黒田 悠弥, 和田 邑一, 後藤 直樹, 藤井 高志, 毛利 真一郎, 出浦 桃子, 荒木 努
    • Organizer
      2022年秋季第83回応用物理学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 極薄GaN/AlN超格子構造の作製におけるGaN層の膜厚依存性2022

    • Author(s)
      杢谷 直哉, 和田 邑一, 毛利 真一郎, 出浦 桃子, 正直 花奈子, 三宅 秀人, 荒木 努
    • Organizer
      2022年秋季第83回応用物理学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 自立GaN基板上にRF-MBE法で再成長したGaNの発光特性2022

    • Author(s)
      中山 大輝, 今村 涼, 荒木 努, 毛利 真一郎
    • Organizer
      2022年秋季第83回応用物理学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] RF-MBE法を用いたScAlMgO4基板上 GaN成長2022

    • Author(s)
      荒木努,後藤直樹,出浦桃子, 黒田悠弥,和田邑一,藤井高 志,毛利真一郎,白石裕児,福 田承生
    • Organizer
      第51回結晶成長国内会議(JCCG-51)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Microstructural Characterization of Nitride Semiconductor Films Grown on ScAlMgO4 Substrate by RF-MBE2022

    • Author(s)
      Y. Wada, Y. Kuroda, S. Kayamoto, N. Goto, T. Fuji, S. Mouri, Y. Shiraishi, T. Fukuda and T. Araki
    • Organizer
      14th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma 2022)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Growth of Ultra-Thin GaN/AlN Superlattice Structure toward Deep-UV Emission2022

    • Author(s)
      N. Mokutani, Y. Wada, S. Mouri, K. Shojiki, S. Xiao, H. Miyake and T. Araki
    • Organizer
      14th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma 2022)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] DERI法を用いたInN結晶成長の成長温度依存性に関する研究2021

    • Author(s)
      張 同舟, 後藤 直樹, 毛利 真一郎, 荒木 努
    • Organizer
      2021年秋季第82回応用物理学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] RF-MBE法を用いたScAlMgO4基板上InGaNエピタキシャル成長Ⅱ2021

    • Author(s)
      後藤直樹, 栢本聖也, 黒田悠弥, 和田邑一, 藤井高志, 毛利真一郎, 白石佑児, 福田承生, 荒木努
    • Organizer
      2021年秋季第82回応用物理学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] RF-MBE法による極薄GaN/AlN超格子構造の作製2021

    • Author(s)
      杢谷 直哉, 和田 邑一, 毛利 真一郎, 正直 花奈子, 三宅 秀人, 荒木 努
    • Organizer
      2021年秋季第82回応用物理学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] RF-MBE法を用いたN極性AlNテンプレート基板上InN結晶成長2021

    • Author(s)
      篠田 悠平, 福田 安莉, 橘 秀紀, 毛利 真一郎, 正直 花奈子, 三宅 秀人, 荒木 努
    • Organizer
      2021年秋季第82回応用物理学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] AlNテンプレート基板上にRF-MBE法で成長したInNの発光特性2021

    • Author(s)
      中山 大輝, 毛利真一郎, 福田安莉, 高林佑介, 正直花奈子, 三宅秀人, 荒木努
    • Organizer
      2021年秋季第82回応用物理学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ScAlMgO4基板上窒化物半導体結晶RF-MBE 成長の最近の進展2021

    • Author(s)
      荒木努
    • Organizer
      第13回ナノ構造エピタキシャル成長講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Patent(Industrial Property Rights)] 窒化物半導体膜育成用テンプレート、及びその製造方法、並びにそれを用いて製造される窒化物半導体、及びその製造方法2023

    • Inventor(s)
      1.荒木努、出浦桃子、藤井高志、福田承生
    • Industrial Property Rights Holder
      1.荒木努、出浦桃子、藤井高志、福田承生
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-017376
    • Filing Date
      2023
    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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