Creation and comprehensive exploration of high performance thermoelectric semiconductor utilizing natural quantum structure of layered transition metal compound

• Project/Area Number: 19H02425
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 26020:Inorganic materials and properties-related
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Katase Takayoshi 東京工業大学, 科学技術創成研究院, 准教授 (90648388)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000); Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2019: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
• Keywords: 熱電変換材料 / 層状半導体 / 量子構造 / 材料設計 / 低環境負荷

Outline of Research at the Start

無毒で豊富な元素で構成される高性能熱電半導体の実現を目指して、層状遷移金属化合物のバルク二次元電子ガス（2DEG）を利用して巨大熱電能（S）を引き出す、その材料設計指針を確立することを目的とする。高Sを得るために2DEGの大きな状態密度を利用することが提案されているが、2DEGと優れた熱電性能は薄膜界面でしか観測されず、発電量が必要とされる熱電材料としては使えない。本研究では、2DEG構造と絶縁層を交互に積層した構造を持つ層状結晶（=バルク2DEG）を提案し、バルク2DEGに起因した巨大Sの実現を目指す。さらに同様の電子構造を持ち得る層状遷移金属化合物の第一原理計算による網羅的探索まで行う。

Outline of Final Research Achievements

Design, synthesis, and electronic property characterization of high purity layered transition metal nitride semiconductors, AETMN2 (AE=Ca,Sr,Ba and TM=Ti,Zr,Hf) were performed to search new high performance thermoelectric materials with two dimensional electron gas (2DEG) structure. Density functional theory defect calculations clarified that nitrogen vacancy and oxygen impurity substitution, as shallow donor, are easily formed in SrTiN2, while the defect formation is largely suppressed by Ca substitution at Sr site and Zr,Hf substitution at Ti site. The electronic, optical, and magnetic properties were clarified by using high phase purity (>94 mol%) AETMN2 bulks synthesized by a solid-state reaction between AENH and TMN precursors with NaN3. The easiness of impurity incorporation is designed to produce a more intrinsic semiconductor in wider chemical conditions, opening a way to cultivating novel functional materials that are sensitive to atmospheric impurities and defects.

Academic Significance and Societal Importance of the Research Achievements

第一原理計算による電子構造・欠陥計算と化学結合解析を併用して合成プロセスを設計し、大気中で不安定な物質でも不純物や欠陥の生成を抑制して新しい半導体材料を実現する材料探索手法になると期待される。本提案を発展させ、関連層状化合物の探索と電子構造・半導体物性評価を更に進めていくことにより、優れた環境調和型熱電材料の実現に繋がると考える。

Research Products

• [Int'l Joint Research] 華中科技大学/蘇州大学(中国)
• [Int'l Joint Research] ウィーン工科大学(オーストリア)
• [Int'l Joint Research] 中央研究院(その他の国・地域（台湾）)
• [Int'l Joint Research] 華中科技大学/蘇州大学/南方科技大学(中国)
• [Int'l Joint Research] ウィーン工科大学(オーストリア)
• [Int'l Joint Research] 中央研究院(台湾)
• [Int'l Joint Research] 蘇州大学/華中科技大学(中国)
• [Journal Article] Design, Synthesis, and Optoelectronic Properties of the High-Purity Phase in Layered AETMN2 (AE = Sr, Ba; TM = Ti, Zr, Hf) Semiconductors (2022)
  • Author(s): Akihiro Shiraishi, Shigeru Kimura, Xinyi He, Naoto Watanabe, Takayoshi Katase, Keisuke Ide, Makoto Minohara, Kosuke Matsuzaki, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Inorg. Chem. Volume: 61 Issue: 17 Pages: 6650-6659
  • DOI: 10.1021/acs.inorgchem.2c00604
  • Peer Reviewed
• [Journal Article] High-Mobility Metastable Rock-Salt Type (Sn,Ca)Se Thin Film Stabilized by Direct Epitaxial Growth on a YSZ (111) Single-Crystal Substrate (2022)
  • Author(s): Xinyi He, Jinshuai Chen, Takayoshi Katase, Makoto Minohara, Keisuke Ide, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, and Toshio Kamiya
  • Journal Title: ACS Appl. Mater. Interfaces Volume: 14 Issue: 16 Pages: 18682-18689
  • DOI: 10.1021/acsami.2c01464
  • Peer Reviewed
• [Journal Article] Electronic and Lattice Thermal Conductivity Switching by 3D-2D Crystal Structure Transition in Nonequilibrium (Pb1-xSnx)Se (2022)
  • Author(s): Y. Nishimura, Xinyi He, Takayoshi Katase, Terumasa Tadano, Keisuke Ide, Suguru Kitani, Kota Hanzawa, Shigenori Ueda, Hidenori Hiramatsu, Hitoshi Kawaji, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Adv. Electron. Mater. Volume: 0 Issue: 9 Pages: 2200024-2200024
  • DOI: 10.1002/aelm.202200024
  • Peer Reviewed / Open Access
• [Journal Article] Degenerated Hole Doping and Ultra-Low Lattice Thermal Conductivity in Polycrystalline SnSe by Nonequilibrium Isovalent Te Substitution (2022)
  • Author(s): Xinyi He, Haoyun Zhang, Takumi Nose, Takayoshi Katase, Terumasa Tadano, Keisuke Ide, Shigenori Ueda, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Adv. Sci. Volume: 0 Issue: 13 Pages: 2105958-2105958
  • DOI: 10.1002/advs.202105958
  • Peer Reviewed / Open Access
• [Journal Article] Large phonon drag thermopower boosted by massive electrons and phonon leaking in LaAlO3/LaNiO3/LaAlO3 heterostructure (2021)
  • Author(s): Masatoshi Kimura, Xinyi He, Takayoshi Katase, Terumasa Tadano, Jan M. Tomczak, Makoto Minohara, Ryotaro Aso, Hideto Yoshida, Keisuke Ide, Shigenori Ueda, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Nano Lett. Volume: 21 Issue: 21 Pages: 9240-9246
  • DOI: 10.1021/acs.nanolett.1c03143
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Breaking of thermopower - conductivity trade-off in LaTiO3 film around Mott insulator to metal transition (2021)
  • Author(s): Takayoshi Katase, Xinyi He, Terumasa Tadano, Jan M. Tomczak, Takaki Onozato, Keisuke Ide, Bin Feng, Tetsuya Tohei, Hidenori Hiramatsu, Hiromichi Ohta, Yuichi Ikuhara, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Adv. Sci. Volume: 8 Issue: 23 Pages: 202102097-202102097
  • DOI: 10.1002/advs.202102097
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ion substitution effect on defect formation in two-dimensional transition metal nitrides semiconductor, AETiN2 (AE = Ca, Sr, Ba) (2021)
  • Author(s): Xinyi He, Takayoshi Katase, Keisuke Ide, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Inorg. Chem. Volume: 60 Issue: 14 Pages: 10227-10234
  • DOI: 10.1021/acs.inorgchem.1c00526
  • Peer Reviewed
• [Journal Article] Reversible 3D-2D structural phase transition and giant electronic modulation in non-equilibrium alloy semiconductor, lead-tin-selenide (2021)
  • Author(s): Takayoshi Katase, Yudai Takahashi, Xinyi He, Terumasa Tadano, Keisuke Ide, Hideto Yoshida, Shiro Kawachi, Junichi Yamaura, Masato Sasase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Science Adv. Volume: 7 Issue: 12
  • DOI: 10.1126/sciadv.abf2725
  • Peer Reviewed / Open Access
• [Journal Article] Double charge polarity switching in Sb-doped SnSe with switchable substitution sites (2020)
  • Author(s): Chihiro Yamamoto, Xinyi He, Takayoshi Katase, Keisuke Ide, Yosuke Goto, Yoshikazu Mizuguchi, Akane Samizo, Makoto Minohara, Shigenori Ueda, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Adv. Funct. Mater. Volume: 31 Issue: 8 Pages: 2008092-2008092
  • DOI: 10.1002/adfm.202008092
  • Peer Reviewed
• [Journal Article] Shallow valence band of rutile GeO2 and p-type doping (2020)
  • Author(s): Christian A. Niedermeier, Keisuke Ide, Takayoshi Katase, Hideo Hosono, and Toshio Kamiya
  • Journal Title: J. Phys. Chem. C Volume: 124 Issue: 47 Pages: 25721-25728
  • DOI: 10.1021/acs.jpcc.0c07757
  • Peer Reviewed
• [Journal Article] p-Type Transparent Quadruple Perovskite Halide Conductors: Fact or Fiction? (2020)
  • Author(s): Sanlue Hu, Bing Xia, Yang-Peng Lin, Takayoshi Katase, Jun Fujioka, Toshio Kamiya, Hideo Hosono, Ke-Zhao Du, and Zewen Xiao
  • Journal Title: Advanced Functional Materials Volume: 30 Issue: 31 Pages: 1909906-1909906
  • DOI: 10.1002/adfm.201909906
  • Peer Reviewed
• [Journal Article] Phonon scattering limited mobility in the representative cubic perovskite semiconductors SrGeO3, BaSnO3, and SrTiO3 (2020)
  • Author(s): Christian A. Niedermeier, Yu Kumagai, Keisuke Ide, Takayoshi Katase, Fumiyasu Oba, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Phys. Rev. B Volume: 101 Issue: 12 Pages: 125206-125206
  • DOI: 10.1103/physrevb.101.125206
  • Peer Reviewed
• [Journal Article] Thermoelectric (BaxSr1-x)Si2 films prepared by sputtering method over the barium solubility limit (2020)
  • Author(s): Kodai Aoyama, Takao Shimizu, Hideto Kuramochi, Masami Mesuda, Ryo Akiike, Keisuke Ide, Takayoshi Katase, Toshio Kamiya, Yoshisato Kimura, Hiroshi Funakubo
  • Journal Title: Jpn. J. Appl. Phys. Volume: 59 Issue: SF Pages: SFFB02-SFFB02
  • DOI: 10.7567/1347-4065/ab645b
  • NAID: 210000157855
  • Peer Reviewed
• [Journal Article] Arbitrary control of the diffusion potential between a plasmonic metal and a semiconductor by an angstrom-thick interface dipole layer (2020)
  • Author(s): Oshikiri Tomoya, Sawayanagi Hiroki, Nakamura Keisuke, Ueno Kosei, Katase Takayoshi, Ohta Hiromichi, Misawa Hiroaki
  • Journal Title: The Journal of Chemical Physics Volume: 152 Issue: 3 Pages: 034705-034705
  • DOI: 10.1063/1.5134900
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Crystal structure built from a GeO6-GeO5 polyhedra network with high thermal stability:b-SrGe2O5 (2019)
  • Author(s): Christian A. Niedermeier, Junichi Yamaura, Jiazhen Wu, Xinyi He, Takayoshi Katase, Hideo Hosono, and Toshio Kamiya
  • Journal Title: ACS Appl. Electron. Mater. Volume: 1 Issue: 10 Pages: 1989-1993
  • DOI: 10.1021/acsaelm.9b00552
  • Peer Reviewed
• [Journal Article] Symmetric Ambipolar Thin-Film Transistors and High-Gain CMOS-like Inverters Using Environmentally Friendly Copper Nitride (2019)
  • Author(s): Matsuzaki Kosuke、Katase Takayoshi、Kamiya Toshio、Hosono Hideo
  • Journal Title: ACS Applied Materials & Interfaces Volume: 11 Issue: 38 Pages: 35132-35137
  • DOI: 10.1021/acsami.9b12068
  • Peer Reviewed
• [Journal Article] Superconductivity at 48 K of heavily hydrogen-doped SmFeAsO epitaxial films grown by topotactic chemical reaction using CaH2 (2019)
  • Author(s): Matsumoto Jumpei、Hanzawa Kota、Sasase Masato、Haindl Silvia、Katase Takayoshi、Hiramatsu Hidenori、Hosono Hideo
  • Journal Title: Physical Review Materials Volume: 3 Issue: 10 Pages: 103401-103401
  • DOI: 10.1103/physrevmaterials.3.103401
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Intrinsic and Extrinsic Defects in Layered Nitride Semiconductor, SrTiN2 (2019)
  • Author(s): Xinyi He, Zewen Xiao, Takayoshi Katase, Keisuke Ide, Hideo Hosono, and Toshio Kamiya
  • Journal Title: Journal of Physical Chemistry C Volume: 123 Issue: 32 Pages: 32-32
  • DOI: 10.1021/acs.jpcc.9b03643
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Surface charge accumulation and electrochemical protonation of transition metal oxides using water-infiltrated nanoporous glass (2019)
  • Author(s): Takayoshi Katase, Hiromichi Ohta
  • Journal Title: Semiconductor Science and Technology Volume: 34 Issue: 12 Pages: 123001-123001
  • DOI: 10.1088/1361-6641/ab51b2
  • Peer Reviewed
• [Journal Article] New Amorphous In-Ga-Zn-O Thin-Film Transistor-Based Optical Pixel Sensor for Optical Input Signal With Short Wavelength (2019)
  • Author(s): Wu Chia-En、Ide Keisuke、Katase Takayoshi、Hiramatsu Hidenori、Hosono Hideo、Lin Chih-Lung、Kamiya Toshio
  • Journal Title: IEEE Transactions on Electron Devices Volume: 66 Issue: 9 Pages: 3841-3846
  • DOI: 10.1109/ted.2019.2925091
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Oxide-based optical, electrical, and magnetic properties switching devices with water-incorporated gate insulator (2019)
  • Author(s): Takayoshi Katase and Hiromichi Ohta
  • Journal Title: Jpn. J. Appl. Phys. Volume: 58 Issue: 9 Pages: 090501-090501
  • DOI: 10.7567/1347-4065/ab02a5
  • NAID: 210000135460
  • Peer Reviewed
• [Presentation] 非平衡カルコゲナイド固溶系半導体の2次元―3次元構造転移と巨大電子物性変調 (2021)
  • Author(s): 片瀬貴義
  • Organizer: 日本セラミックス協会 第34回秋季シンポジウム
  • Invited
• [Presentation] 3D-2D structural phase transition and giant electronic conductivity modulation in non-equilibrium hetero-structural alloy, (Pb1-xSnx)Se (2021)
  • Author(s): Takayoshi Katase, Xinyi He, Terumasa Tadano, Keisuke Ide, Hideto Yoshida, Shiro Kawachi, Junichi Yamaura, Masato Sasase, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Two-dimensional layered semiconductors AETMN2 (AE = Sr, Ba; TM = Ti, Zr, Hf); high-purity bulk synthesis and electronic property characterization (2021)
  • Author(s): Shigeru Kimura, Akihiro Shiraishi, Xinyi He, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: 2021 Materials Research Society Fall Meeting & Exhibit
  • Int'l Joint Research
• [Presentation] Large phonon drag thermopower enhancement by epitaxial strain and phonon leaking in LaAlO3 / LaNiO3 / LaAlO3 heterostructure (2021)
  • Author(s): Masatoshi Kimura, Xinyi He, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: 2021 Materials Research Society Fall Meeting & Exhibit
  • Int'l Joint Research
• [Presentation] Double charge polarity conversion by Sb doping in layered SnSe with switchable substitution sites (2021)
  • Author(s): Xinyi He, Chihiro Yamamoto, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: 2021 Materials Research Society Fall Meeting & Exhibit
  • Int'l Joint Research
• [Presentation] Effect of hydrogen doping on transport property of ultrawide bandgap amorphous oxide semiconductor, amorphous Ga-O (2021)
  • Author(s): Keisuke Ide, Yukari Kasai, Akihiro Kato, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Room-temperature fabrication of ionic liquid gated Zn3N2 electric double layer transistors with non-degenerate channel electron density (2021)
  • Author(s): Kaiwen Li, Kota Hanzawa, Keisuke Ide, Kosuke Matsuzaki, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, Zhang Qun, Toshio Kamiya
  • Organizer: 2021 International Conference on Solid State Devices and Materials (SSDM 2021)
  • Int'l Joint Research
• [Presentation] Fabrication of Zn3N2 electric double layer transistor by ionic liquid gating (2021)
  • Author(s): Kaiwen Li, Kota Hanzawa, Keisuke Ide, Kosuke Matsuzaki, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, Qun Zhang, Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Strain-induced large power-factor enhancement by breaking thermoelectric trade-off relation in lanthanum nickel oxide (2021)
  • Author(s): Masatoshi Kimura, Yuhi Higuchi, Xinyi He, Takayoshi Katase, Terumasa Tadano, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Degenerate hole conduction and ultra-low lattice thermal conductivity of SnSe by nonequilibrium isovalent Te substitution (2021)
  • Author(s): Takumi Nose, Xinyi He, Haoyun Zhang, Takayoshi Katase, Terumasa Tadano, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Electronic structures and electro-optical properties of layered oxychalcogenide semiconductor, AE2CuInO3Ch (AE: Alkaline earth, Ch: Chalcogen) (2021)
  • Author(s): Xinyi He, Tatsuya Cho, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Current-driven metal-insulator transition observed in epitaxial thin films of the Mott Semiconductor Ca2RuO4 (2021)
  • Author(s): Keiji Tsubaki, Tenki Ishida, Yasuo Takahashi, Takayoshi Katase, Toshio Kamiya, Atsushi Tsurumaki-Fukuchi, Masashi Arita
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Probe Microscopy analysis of neuromorphic resistive memory functions of amorphous oxide semiconductors (2021)
  • Author(s): Atsushi Tsurumaki-Fukuchi, Takayoshi Katase, Hiromichi Ohta, Masashi Arita, Yasuo Takahashi
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Fabrication and characterization of resistive random-access memory device using amorphous 12CaO7Al2O3 (2021)
  • Author(s): Tasuke Kadono, Keisuke Ide, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research
• [Presentation] Transport properties of Zn3N2 investigated by ionic liquid gated electric-double-layer transistors (2021)
  • Author(s): Kaiwen Li, Kota Hanzawa, Keisuke Ide, Kosuke Matsuzaki, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, Zhang Qun, Toshio Kamiya
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research
• [Presentation] Enhanced thermoelectric figure-of-merit ZT in layered SnSe doped with isovalent Te and its origin clarified by density functional theory (2021)
  • Author(s): Xinyi He, Haoyun Zhang, Takumi Nose, Takayoshi Katase, Terumasa Tadano, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research
• [Presentation] Appearance and large enhancement of phonon drag thermopower by epitaxial strain and phonon leaking from LaAlO3 in LaNiO3 (2021)
  • Author(s): Masatoshi Kimura, Xinyi He, Takayoshi Katase, Terumasa Tadano, Jan M. Tomczak, Makoto Minohara, Ryotaro Aso, Hideto Yoshida, Keisuke Ide, Shigenori Ueda, Hidenori Hiramatsu, Hiroshi Kumigashira, Hideo Hosono, Toshio Kamiya
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research
• [Presentation] High-purity bulk synthesis and electronic properties of a two-dimensional layered semiconductor, alkaline earth transition metal nitrides (2021)
  • Author(s): Shigeru Kimura, Akihiro Shiraishi, Xinyi He, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research
• [Presentation] Probe Microscopy Analysis of Defect-Driven Analog Memory Functions of TaOx for Neuromorphic Computing (2021)
  • Author(s): Atsushi Turumaki-Fukuchi, Takayoshi Katase, Hiromichi Ohta, Masashi Arita, and Yasuo Takahashi
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research
• [Presentation] Two-Step Current-Induced Transition in Ca2RuO4 Thin Films Observed in the Time-Resolved Resistive Switching Characteristics (2021)
  • Author(s): Keiji Tsubaki, Atsushi Turumaki-Fukuchi, Yasuo Takahashi, Takayoshi Katase, Toshio Kamiya, and Masashi Arita
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research
• [Presentation] Fast and Reliable Resistance Switching in Ca2RuO4 Thin Films Driven by the Current-Induced Phase Transitions (2021)
  • Author(s): Keiji Tsubaki, Atsushi Turumaki-Fukuchi, Yasuo Takahashi, Takayoshi Katase, Toshio Kamiya, and Masashi Arita
  • Organizer: 2021 International Conference on Solid State Devices and Materials (SSDM)
  • Int'l Joint Research
• [Presentation] High electron conductivity and extremely low thermal conductivity of layered SnS semiconductor by geometrical Pb doping (2021)
  • Author(s): Mari Hiramatsu, Xinyi He, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Electronic structures and electronic properties of 2-dimensional layered semiconductors, AETMN2 (AE = Sr, Ba; TM = Ti, Zr, Hf) (2021)
  • Author(s): Shigeru Kimura, Akihiro Shiraishi, Xinyi He, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Phonon-drag driven giant anisotropic thermopower in epitaxially strained LaNiO3 (110) ultra-thin films (2021)
  • Author(s): Masatoshi Kimura, Xinyi He, Takayoshi Katase, Terumasa Tadano, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Thermoelectric properties of non-equilibrium SnSe thin films stabilized by epitaxial strain (2021)
  • Author(s): Ryusei Higuchi, Takayoshi Katase, Kota Hanzawa, Shintaro Yasui, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] Origin of high-density hole doping by isovalent Te substitution in SnSe (2021)
  • Author(s): Xinyi He, Haoyun Zhang, Takumi Nose, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The Twelfth International Conference on the Science and Technology for Advanced Ceramics (STAC12)
  • Int'l Joint Research
• [Presentation] 300cm2/Vs以上の粒内正孔移動度を示す非平衡岩塩型(Sn,Ca)Seエピタキシャル薄膜 (2021)
  • Author(s): ホ シンイ, チェン ジンシュアイ, 片瀬 貴義, 井手 啓介, 平松 秀典, 細野 秀雄, 神谷 利夫
  • Organizer: 薄膜材料デバイス研究会 第18回研究集会
• [Presentation] 不活性電子対制御によるカルコゲナイド半導体の巨大電子物性変調 (2021)
  • Author(s): 片瀬貴義
  • Organizer: 日本磁気学会 第68回化合物新磁性材料専門研究会
• [Presentation] Ca2RuO4薄膜における電流誘起抵抗転移のRu欠損量依存性 (2021)
  • Author(s): 福地 厚，椿 啓司，石田 典輝，片瀬 貴義，神谷 利夫，有田 正志，高橋 庸夫
  • Organizer: 2021年第68回応用物理学会春季学術講演会
• [Presentation] 超ワイドギャップアモルファス酸化物半導体を用いたショットキーバリアダイオードの逆バイアス特性 (2021)
  • Author(s): 井手啓介、笠井悠莉華、片瀬貴義、平松秀典、細野秀雄、神谷利夫
  • Organizer: 2021年第68回応用物理学会春季学術講演会
• [Presentation] 準安定(Pb1-xSnx)Se薄膜の2次元-3次元構造転移と巨大電子物性変調 (2021)
  • Author(s): 高橋 雄大，片瀬 貴義、ホ シンイ，只野 央将，井手 啓介，吉田 秀人，河智 史朗，山浦 淳一，笹瀬 雅人、平松 秀典，細野 秀雄，神谷 利夫
  • Organizer: 2021年第68回応用物理学会春季学術講演会
• [Presentation] Electronic property modulation of transition metal oxides by electrochemical and strain engineering (2020)
  • Author(s): Takayoshi Katase
  • Organizer: 2020 International Conference on Solid State Devices and Materials (SSDM)
  • Int'l Joint Research / Invited
• [Presentation] トレードオフの相関を破る酸化物熱電材料の高出力化 (2020)
  • Author(s): 片瀬貴義、樋口雄飛、木村公俊、只野央将、藤岡淳、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 第17回 日本熱電学会学術講演会
• [Presentation] 超ワイドギャップa-Ga-O薄膜トランジスタへの水素プラズマ処理効果 (2020)
  • Author(s): 加藤昭宏、笠井悠莉華、井手啓介、片瀬貴義、平松秀典、細野秀雄、神谷利夫
  • Organizer: 薄膜材料デバイス研究会 第17回研究会「薄膜デバイスの原点」
• [Presentation] LaNiO3超薄膜の表面終端処理によるフォノンドラッグ熱電能の増強効果 (2020)
  • Author(s): 木村公俊、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 薄膜材料デバイス研究会 第17回研究会「薄膜デバイスの原点」
• [Presentation] LaNiO3極薄膜の金属-絶縁体転移に伴う巨大フォノンドラッグ熱電効果の発現 (2020)
  • Author(s): 木村公俊、樋口雄飛、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第40回電子材料研究討論会
• [Presentation] 2次元層状半導体AETMN2 (AE = Sr, Ba, TM = Ti, Zr, Hf)の高純度試料合成と電気・磁気特性 (2020)
  • Author(s): 白石明浩、ホー シンイ、渡邉脩人、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第40回電子材料研究討論会
• [Presentation] 層状半導体AE2CuInO3Ch (AE :アルカリ土類、Ch :カルコゲン)の光電子物性と両極性伝導制御の可能性 (2020)
  • Author(s): 長達也、ホーシンイ、森大介、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第40回電子材料研究討論会
• [Presentation] 準安定(Pb1-xSnx)Se固溶体バルク試料の合成と2次元-3次元構造転移に伴う巨大電子物性変調 (2020)
  • Author(s): 西村優作、ホーシンイ、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第40回電子材料研究討論会
• [Presentation] 超ワイドギャップアルカリ土類酸化物への電子ドーピングの理論的検討 (2020)
  • Author(s): 橋本幸花、ホーシンイ、片瀬貴義、井手啓介、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第40回電子材料研究討論会
• [Presentation] Density functional study on electronic structure, defect formation and carrier doping control of AETMN2 (AE=Ca,Sr,Ba, TM=Ti,Zr,Hf) (2020)
  • Author(s): ホーシンイ、片瀬貴義、井手啓介、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第40回電子材料研究討論会
• [Presentation] Ca2RuO4エピタキシャル薄膜が示す電流誘起絶縁体-金属転移とその抵抗変化特性 (2020)
  • Author(s): 福地厚, 椿啓司, 石田典輝, 片瀬貴義, 神谷利夫, 高橋庸夫、有田正志
  • Organizer: 日本セラミックス協会 第40回電子材料研究討論会
• [Presentation] 電流誘起型金属絶縁体転移物質Ca2RuO4薄膜が示す高い安定性を持った抵抗スイッチング動作 (2020)
  • Author(s): 椿啓司, 石田典輝, 福地厚, 片瀬貴義, 神谷利夫, 有田正志, 高橋庸夫
  • Organizer: 第81回応用物理学会秋季学術講演会
• [Presentation] Ca2RuO4エピタキシャル薄膜における非線形伝導現象 (2020)
  • Author(s): 福地厚, 椿啓司, 石田典輝, 高橋庸夫, 片瀬貴義, 神谷利夫, 有田正志
  • Organizer: 日本物理学会 2020年秋季大会
• [Presentation] トレードオフの相関を破る酸化物熱電材料の高出力特性 (2020)
  • Author(s): 片瀬貴義、樋口雄飛、只野 央将，藤岡 淳，井手 啓介，平松 秀典，細野 秀雄，神谷 利夫
  • Organizer: 応用物理学会新領域、第10回強的秩序とその操作に関わる研究グループ研究会
• [Presentation] Power-factor enhancement by breaking trade-off relation of electrical conductivity and thermopower in strain-controlled transition metal oxide (2020)
  • Author(s): Takayoshi Katase, Yuhi Higuchi, Terumasa Tadano, Jun Fujioka, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: 日本セラミックス協会 第58回セラミックス基礎科学討論会
• [Presentation] 熱起電力と導電率のトレードオフの関係を破る酸化物熱電材料LaNiO3の高出力特性 (2020)
  • Author(s): 樋口 雄飛，片瀬 貴義，只野 央将，藤岡 淳，井手 啓介，平松 秀典，細野 秀雄，神谷 利夫
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] モット絶縁体LaNiO3超薄膜に発現する巨大フォノンドラッグ熱電効果 (2020)
  • Author(s): 木村 公俊，樋口 雄飛，片瀬 貴義，蓑原 誠人, 麻生 亮太郎, 吉田 秀人，井手 啓介， 平松 秀典，上田 茂典, 組頭 広志, 細野 秀雄，神谷 利夫
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] 層状結晶半導体SrTiN2の高純度試料合成と光電子輸送特性 (2020)
  • Author(s): 渡邉 脩人，白石 明浩，ホ シンイ, 片瀬 貴義，井手 啓介，松崎 功佑，平松 秀典，細野 秀雄，神谷 利夫
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] Sb添加SnSeのゼーベック・ホール係数の二重極性反転機構 (2020)
  • Author(s): 山本 千紘，ホ シンイ, 橋本 幸花, 片瀬 貴義，井手 啓介，平松 秀典，上田 茂典, 細野 秀雄，神谷 利夫
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] 二元同時スパッタ法で作製したAeSi2 膜(Ae= Ca, Sr, Ba)の構成相と電気特性 (2020)
  • Author(s): 青山航大、清水荘雄、倉持豪人、召田雅実、秋池良、井手啓介、片瀬貴義、神谷利夫、舟窪浩
  • Organizer: 日本セラミックス協会 第58回セラミックス基礎科学討論会
• [Presentation] 層状SnSeへのSbドーピングと二重極性反転現象 (2020)
  • Author(s): 山本千紘、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第58回セラミックス基礎科学討論会
• [Presentation] 水素ドープアモルファス酸化ガリウムを用いた薄膜トランジスタ (2020)
  • Author(s): 加藤昭宏，笠井悠莉華，井手啓介，片瀬貴義，平松 秀典，細野 秀雄，神谷 利夫
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] 硬X 線光電子分光を用いたLaNiO3 薄膜の電子構造の基板応力依存性 (2020)
  • Author(s): 山神 光平、池田 啓祐、Yujun Zhang、保井 晃、高木 康多、片瀬 貴義、神谷利夫、和達 大樹
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] 電流誘起金属絶縁体転移を示すCa2RuO4 薄膜の電流-電圧特性の評価 (2020)
  • Author(s): 椿 啓司，福地 厚，石田 典輝，有田 正志，片瀬 貴義，神谷 利夫，高橋 庸夫
  • Organizer: 第67回応用物理学会春季学術講演会
• [Presentation] Ca2RuO4薄膜における電流/電場誘起金属絶縁体転移の観測 (2020)
  • Author(s): 福地厚, 椿啓司, 石田典輝, 有田正志, 片瀬貴義, 神谷利夫, 高橋庸夫
  • Organizer: 日本物理学会 第75回年次大会
• [Presentation] Unusually large power-factor enhancement by breaking thermoelectric trade-off relation in transition metal oxide (2019)
  • Author(s): Takayoshi Katase
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research / Invited
• [Presentation] トレードオフの相関を超えた巨大熱電変換性能 (2019)
  • Author(s): 片瀬貴義
  • Organizer: 令和元年度第2回プロセス研究会
  • Invited
• [Presentation] Epitaxial structure and phonon-drag thermoelectric properties of strain controlled LaNiO3 thin films (2019)
  • Author(s): Takayoshi Katase, Yuhi Higuchi, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 4th International Symposium on Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development (iLIM-4)
  • Int'l Joint Research
• [Presentation] 酸化物熱電材料のフォノンドラッグ効果 (2019)
  • Author(s): 片瀬貴義
  • Organizer: 日本材料科学会 第6回 マテリアルズ・インフォマティクス基礎研究会
  • Invited
• [Presentation] Epitaxial strain-induced enhancement of thermoelectric power-factors in strongly correlated transition metal oxide (2019)
  • Author(s): Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Enhanced thermoelectric power-factors by strain control in strongly correlated lanthanum titanate (2019)
  • Author(s): Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Biaxial-strain induced power-factor enhancement in metallic strongly correlated transition metal oxide LaNiO3 (2019)
  • Author(s): Yuhi Higuchi, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: 11th International Symposium on Transparent Oxide Thin Films for Electronics and Optics (TOEO-11)
  • Int'l Joint Research
• [Presentation] Synthesis and opto-electronic properties of layered oxychalcogenides, AE2CuInO3Ch (AE = Ca, Sr, Ba, and Ch = S, Se, Te) (2019)
  • Author(s): Tatsuya Cho, Daisuke Mori, Xiyi He, Keisuke Ide, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: 11th International Symposium on Transparent Oxide Thin Films for Electronics and Optics (TOEO-11)
  • Int'l Joint Research
• [Presentation] Epitaxial structure and thickness dependent phonon-drag thermoelectric properties of LaNiO3 thin film on LaAlO3 (001) substrate (2019)
  • Author(s): Masatoshi Kimura, Yuhi Higuchi, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: 11th International Symposium on Transparent Oxide Thin Films for Electronics and Optics (TOEO-11)
  • Int'l Joint Research
• [Presentation] Temperature dependence of thermoelectric properties of Ge1－xSnx layers grown by molecular beam epitaxy (2019)
  • Author(s): Masashi Kurosawa, Masaya Nakata, Keisuke Ide, Takayoshi Katase, and Toshio Kamiya
  • Organizer: The 4th International Symposium on Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development (iLIM-4)
  • Int'l Joint Research
• [Presentation] Expansion of Ba and Ca solubility limit into SrSi2 thin film and their thermoelectric properties (2019)
  • Author(s): Kodai Aoyama, Takao Shimizu, Hideto Kuramochi, Masami Mesuda, Ryo Akiike, Keisuke Ide, Takayoshi Katase, Toshio Kamiya, Yoshisato Kimura, and Hiroshi Funakubo
  • Organizer: 2019 MRS Fall Meeting & Exhibit
  • Int'l Joint Research
• [Presentation] Epitaxial structure and phonon-drag thermoelectric properties of FeSb2 thin film on SrTiO3 (001) substrate (2019)
  • Author(s): Chihiro Yamamoto, Kota Hanzawa, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Power-factor enhancement by breaking trade-off relation of thermopower and electrical conductivity in epitaxially strained lanthanum nickelate (2019)
  • Author(s): Yuhi Higuchi, Takayoshi Katase, Keisuke Ide, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Thermoelectric property of MxSr1-xSi2 (M = Ca, Ba) film prepared by co-sputtering method (2019)
  • Author(s): Kodai Aoyama, Takao Shimizu, Hideto Kuramochi, Masami Mesuda, Ryo Akiike, Keisuke Ide, Takayoshi Katase, Toshio Kamiya, Yoshisato Kimura, and Hiroshi Funakubo
  • Organizer: The Fifth Asia-Pacific Conference on Semiconducting Silicates and Related Materials
  • Int'l Joint Research
• [Presentation] 引張歪から圧縮歪まで制御したLaNiO3薄膜の構造とフォノンドラッグ熱電特性 (2019)
  • Author(s): 片瀬貴義、樋口雄飛、木村公俊、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第39回電子材料研究討論会
• [Presentation] LaNiO3エピタキシャル極薄膜に発現する巨大フォノンドラッグ熱電能 (2019)
  • Author(s): 木村公俊、樋口雄飛、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 応用物理学会結晶工学分科会・電子材料若手交流会共催 第2回結晶工学xISYSE 合同研究会
• [Presentation] Stoichiometric and Oxygen-Deficient VO2 as Versatile Electrode for Organic Semiconductors (2019)
  • Author(s): Rongbin Wang, Takayoshi Katase, Ke-Ke Fu, Tianshu Zhai, Jiacheng Yang, Qiankun Wang, Hiromichi Ohta, Steffen Duhm, and Norbert Koch
  • Organizer: The 14th International symposium on Functional pi-electron systems (Berlin, Germany, 2019/6/2-7)
  • Int'l Joint Research
• [Presentation] アモルファス酸化物半導体を用いた新規デバイスの開拓 (2019)
  • Author(s): 井手啓介、金正煥、片瀬貴義、細野秀雄、神谷利夫
  • Organizer: 薄膜材料デバイス研究会 第16回研究集会「新時代に向けた薄膜材料のデバイス技術」
• [Presentation] Structures and Electronic States of Hydrogen in Inorganic Semiconductors with Different Anions (2019)
  • Author(s): Toshio Kamiya, Xinyi He, Zewen Xiao, Keisuke Ide, Takayoshi Katase, Hideo Hosono
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Metal-insulator transition in Ca2RuO4 thin films with a high sensitivity to electrical stiumuli (2019)
  • Author(s): Keiji Tsubaki, Atsushi Tsurumaki-Fukuchi, Takayoshi Katase, Toshio Kamiya, Masashi Arita, and Yasuo Takahashi
  • Organizer: The 3rd Workshop on Functional Materials Science (FMS2019)
  • Int'l Joint Research
• [Presentation] Single crystal growth of cubic SrGeO3 and estimation of intrinsic electron mobility (2019)
  • Author(s): Christian A. Niedermeier, Yu Kumagai, Keisuke Ide, Takayoshi Katase, Fumiyasu Oba, Hideo Hosono, and Toshio Kamiya
  • Organizer: 11th International Symposium on Transparent Oxide Thin Films for Electronics and Optics (TOEO-11)
  • Int'l Joint Research
• [Presentation] Optoelectrical properties and thin-film transistor operation of rare-earth-doped amorphous oxide semiconductors (2019)
  • Author(s): Keisuke Ide, Yuki Nishimagi, Naoto Watanabe, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: 11th International Symposium on Transparent Oxide Thin Films for Electronics and Optics (TOEO-11)
  • Int'l Joint Research
• [Presentation] Effect of hydrogen plasma treatment for ultra-wide bandgap amorphous oxide semiconductor, amorphous Ga-O (2019)
  • Author(s): Keisuke Ide, Yurika Kasai, Kosuke Takenaka, Yuichi Setsuhara, Atsushi Hiraiwa, Hiroshi Kawarada, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 4th International Symposium on Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development (iLIM-4)
  • Int'l Joint Research
• [Presentation] Low-temperature fabrication of phosphor thin-film and light emitting device using amorphous oxide semiconductor (2019)
  • Author(s): Keisuke Ide, Naoto Watanabe, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: International Conference on Materials and Systems for Sustainability 2019 (ICMaSS2019)
  • Int'l Joint Research
• [Presentation] Transition Metal-Doped Amorphous Oxide Semiconductor Thin-Film Phosphor, Chromium-Doped Amorphous Gallium Oxide (2019)
  • Author(s): Keisuke Ide, Yuki Futakado, Naoto Watanabe, Junghwan Kim, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Hydrogen doping and carrier transport properties of amorphous Ga-O (2019)
  • Author(s): Yurika Kasai, Keisuke Ide, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] SrGeO3 single crystal growth and optical phonon spectrum analysis (2019)
  • Author(s): Christian A. Niedermeier, Yu Kumagai, Keisuke Ide, Takayoshi Katase, Fumiyasu Oba, Hideo Hosono and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Low-temperature fabrication of direct-current driven electroluminescent device using amorphous oxide semiconductor thin-film phosphor (2019)
  • Author(s): Naoto Watanabe, Keisuke Ide, Takayoshi Katase, Junghwan Kim, Shigenori Ueda, Koji Horiba, Hiroshi Kumigashira, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Intrinsic and Extrinsic Defects in Layered Nitride Semiconductor", SrTiN2 (2019)
  • Author(s): Xinyi He, Zewen Xiao, Takayoshi Katase, Keisuke Ide, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Structural phase transition and optoelectronic properties of Ba(Sn,Ce)O3 oxide semiconductor solid-solution system (2019)
  • Author(s): Yutaro Kobayashi, Keisuke Ide, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
  • Int'l Joint Research
• [Presentation] Single crystal growth and intrinsic electron mobility of cubic SrGeO3 (2019)
  • Author(s): Christian A. Niedermeier, Yu Kumagai, Keisuke Ide, Takayoshi Katase, Fumiyasu Oba, Hideo Hosono and Toshio Kamiya
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Superconductivity at 48 K of heavily hydrogen-doped SmFeAsO epitaxial films grown by chemical topotactic reaction using CaH2 (2019)
  • Author(s): Jumpei Matsumoto, Kota Hanzawa, Masato Sasase, Silvia Haindl, Takayoshi Katase, Hidenori Hiramatsu, and Hideo Hosono
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Hydrogen doping in ultra-widegap amorphous oxide semiconductor, amorphous Ga-O (2019)
  • Author(s): Keisuke Ide, Yurika Kasai, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Light emitting diodes on glass using amorphous oxide semiconductor thin-film phosphors, rare-earth doped a-Ga-O (2019)
  • Author(s): Naoto Watanabe, Keisuke Ide, Takayoshi Katase, Junghwan Kim, Shigenori Ueda, Koji Horiba, Hiroshi Kumigashira, Hidenori Hiramatsu, Hideo Hosono, Toshio Kamiya
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Density Functional Study on Defects and Doping for Layered Ternary Nitride, SrTiN2 (2019)
  • Author(s): Xinyi He, Zewen Xiao, Takayoshi Katase, Keisuke Ide, Hideo Hosono, and Toshio Kamiya
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Structural phase transition and opto-electronic properties of oxide semiconductor solid solution, (Ba,Sr)(Sn,Ti)O3 (2019)
  • Author(s): Yutaro Kobayashi, Keisuke Ide, Takayoshi Katase, Hidenori Hiramatsu, Hideo Hosono, and Toshio Kamiya
  • Organizer: Materials Research Meeting 2019
  • Int'l Joint Research
• [Presentation] Observation of Field-Induced Resistive Phase Transition in Ca2RuO4 Thin Films (2019)
  • Author(s): Atsushi Tsurumaki-Fukuchi, Keiji Tusubaki, Takayoshi Katase, Toshio Kamiya, Masashi Arita, and Yasuo Takahashi
  • Organizer: 26th International Workshop on Oxide Electronics (iWOE 26)
  • Int'l Joint Research
• [Presentation] Superconductivity at 48 K in heavily hydrogen-doped SmFeAsO epitaxial thin films (2019)
  • Author(s): Jumpei Matsumoto, Kota Hanzawa, Masato Sasase, Silvia Haindl, Takayoshi Katase, Hidenori Hiramatsu, and Hideo Hosono
  • Organizer: 14th Eurpoean Conference on Applied Superconductivity (EUCAS)
  • Int'l Joint Research
• [Presentation] Silicon doping and N2 ambient annealing effects on Zn3N2 thin film transistors (2019)
  • Author(s): Kaiwen Li, Keisuke Ide, Takayoshi Katase, Toshio Kamiya, Dong Lin, Jinhua Ren, Qun Zhang
  • Organizer: 薄膜材料デバイス研究会 第16回研究集会「新時代に向けた薄膜材料のデバイス技術」
• [Presentation] アモルファス酸化ガリウムを用いたショットキーバリアダイオード特性と光応答 (2019)
  • Author(s): 笠井悠莉華、井手啓介、片瀬貴義、平松秀典、細野秀雄、神谷利夫
  • Organizer: 薄膜材料デバイス研究会 第16回研究集会「新時代に向けた薄膜材料のデバイス技術」
• [Presentation] 希土類添加アモルファス酸化物蛍光体薄膜の作製と発光素子への応用 (2019)
  • Author(s): 井手啓介、渡邉脩人、片瀬貴義、笹瀬雅人、金正煥、上田茂典、堀場弘司、組頭広志、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第39回電子材料研究討論会
• [Presentation] アモルファス酸化ガリウム薄膜への電子ドーピングとショットキーダイオード (2019)
  • Author(s): 笠井悠莉華、井手啓介、片瀬貴義、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第39回電子材料研究討論会
• [Presentation] 層状半導体AE2CuInO3Ch (AE = Ca,Sr,Ba, Ch =S,Se,Te)の光電子輸送特性 (2019)
  • Author(s): ホシンイ、長達也、森大介、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第39回電子材料研究討論会
• [Presentation] 層状半導体BaHfN2の合成と光電子物性 (2019)
  • Author(s): 白石明浩、ホシンイ、渡邉脩人、片瀬貴義、井手啓介、平松秀典、細野秀雄、神谷利夫
  • Organizer: 日本セラミックス協会 第39回電子材料研究討論会
• [Presentation] 1111型鉄系超伝導体エピタキシャル薄膜への高濃度水素添加と48 Kの高温超伝導 (2019)
  • Author(s): 松本 惇平、半沢 幸太、笹瀬 雅人、Silvia Haindl、片瀬 貴義、平松 秀典、細野 秀雄
  • Organizer: 第80回応用物理学会秋季学術講演会
• [Presentation] 固相エピタキシャル成長Ca2RuO4薄膜における電流依存金属絶縁体転移の観測 (2019)
  • Author(s): 椿 啓司，福地 厚，片瀬 貴義，神谷 利夫，有田 正志，高橋 庸夫
  • Organizer: 第80回応用物理学会秋季学術講演会
• [Presentation] 二元同時スパッタ法で作製したAeSi2膜の作製 (2019)
  • Author(s): 青山 航大，清水 荘雄，倉持 豪人，召田 雅実、秋池 良，井手 啓介，片瀬 貴義，神谷 利夫，木村 好里，舟窪 浩
  • Organizer: 第80回応用物理学会秋季学術講演会
• [Presentation] 窒化銅薄膜をチャネルに用いたアンバイポーラ型トランジスタの作製 (2019)
  • Author(s): 松崎功佑，片瀬貴義，細野 秀雄
  • Organizer: 第66回応用物理学会春季学術講演会
• [Book] Chapter 6, Novel Structured Metallic and Inorganic Materials (2019)
  • Author(s): Toshio Kamiya, Hidenori Hiramatsu, Keisuke Ide, Takayoshi Katase, Hideo Hosono
  • Total Pages: 13
  • Publisher: Springer Singapore
  • ISBN: 9789811376115
• [Remarks] Reserach map
  • URL: https://researchmap.jp/katase
• [Remarks] researchmap
  • URL: https://researchmap.jp/katase/