Mechanism of Electrical Conductivity of Hydrogenated Zinc Oxide as a Novel Transparent Conductive Material

2011 Fiscal Year Final Research Report

• Project/Area Number: 21560695
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: OZAWA Kenichi 東京工業大学, 大学院・理工学研究科, 助教 (00282822)
• Project Period (FY): 2009 – 2011
• Keywords: 導電性透明材料 / 金属酸化物 / 水素 / 金属-半導体転移 / 二次元電子ガス / 電気伝導 / バンド構造 / シンクロトロン放射光

Research Abstract

An electronic structure of hydrogenated ZnO is investigated by surface-science techniques utilizing synchrotron radiation. Hydrogenation induces two-dimensional metallicity with a free-electron-like property and realizes a high electrical conductivity at the ZnO surface. The usefulness of hydrogenated ZnO as a novel transparent conductive material is proved.

Research Products

• [Journal Article] 化学修飾による酸化物半導体表面の金属化 (2012)
  • Author(s): 小澤健一
  • Journal Title: 化学工業 Volume: Vol.63, No.3 Pages: 207-212
• [Journal Article] Electron Donor Molecule on the Oxide Surface : Influence of Surface Termination of ZnO on Adsorption of Tetrathiafulvalene (2011)
  • Author(s): K. Ozawa, S. Munakata, K. Edamoto, K. Mase
  • Journal Title: The Journal of Physical Chemistry C Volume: Vol.115 Pages: 21843-21851
  • Peer Reviewed
• [Journal Article] Comparison of the surface electronic structures of H-adsorbed ZnO surfaces : An angleresolved photoelectron spectroscopy study (2011)
  • Author(s): K. Ozawa, K. Mase
  • Journal Title: Physical Review B Volume: Vol.83 Pages: 125406-1-8
  • Peer Reviewed
• [Journal Article] Metallization of ZnO(10-10) by adsorption of hydrogen, methanol, and water : Angle-resolved photoelectron spectroscopy (2010)
  • Author(s): K. Ozawa, K. Mase
  • Journal Title: Physical Review B Volume: Vol.81 Pages: 205322-1-6
  • Peer Reviewed
• [Journal Article] Angle-resolved photoelectron spectroscopy study of hydrogen adsorption on ZnO(10-10) (2010)
  • Author(s): K. Ozawa, K. Mase
  • Journal Title: Physica Status Solidi A Volume: Vol.207 Pages: 277-281
  • Peer Reviewed
• [Presentation] 光電子分光による固体表面研究の展開;基礎研究から応用研究まで (2012)
  • Author(s): 小澤健一
  • Organizer: 第29回フォトンファクトリーシンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2012-03-16
• [Presentation] 化学修飾による金属酸化物表面の金属化 (2011)
  • Author(s): 小澤健一
  • Organizer: 第31回表面科学学術講演会
  • Place of Presentation: 東京
  • Year and Date: 2011-12-16
• [Presentation] 光電子分光で探る金属酸化物表面: ZnO表面の古くて新しい問題を解く (2011)
  • Author(s): 小澤健一
  • Organizer: 第2回表面科学若手研究会
  • Place of Presentation: 和光
  • Year and Date: 2011-11-19
• [Presentation] Tetrathiafulvalene adsorption on ZnO : Impact on Surface Chemical Composition (2011)
  • Author(s): K. Ozawa, S. Munakata, K. Edamoto, K. Mase
  • Organizer: 11th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures
  • Place of Presentation: St. Petersburg, Russia
  • Year and Date: 2011-10-06
• [Presentation] 水素化による酸化物表面での二次元電子ガスの創出 (2011)
  • Author(s): 小澤健一
  • Organizer: 水素量子アトミクス研究会
  • Place of Presentation: 仙台
  • Year and Date: 2011-08-23
• [Presentation] (2011)
  • Author(s): 小澤健一,宗像紫織,枝元一之,江森万里,杉田真理,坂間弘,間瀬一彦
  • Organizer: 第28回フォトンファクトリーシンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2011-07-12
• [Presentation] 単結晶ZnO表面へのLewis塩基分子の吸着 (2011)
  • Author(s): 小澤健一,江森万里,杉田真理,坂間弘,間瀬一彦
  • Organizer: 第24回日本放射光学会年回・放射光科学合同シンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2011-01-09
• [Presentation] ZnO表面へのテトラチアフルバレン分子の吸着 (2010)
  • Author(s): 小澤健一,宗像紫織,枝元一之,間瀬一彦
  • Organizer: 第6回放射光表面科学部会・顕微ナノ材料科学研究会合同シンポジウム
  • Place of Presentation: 東京
  • Year and Date: 2010-12-10
• [Presentation] 酸化亜鉛表面への水およびメタノール分子の吸着:表面ミラー指数依存性 (2010)
  • Author(s): 小澤健一,江森万里,杉田真理,坂間弘,間瀬一彦
  • Organizer: 第30回表面科学学術講演会
  • Place of Presentation: 吹田
  • Year and Date: 2010-09-14
• [Presentation] Surface Metallization of ZnO by Molecular Adsorption (2010)
  • Author(s): K. Ozawa, K. Mase
  • Organizer: 18th International Vacuum Congress
  • Place of Presentation: Beijin, China
  • Year and Date: 2010-08-24
• [Presentation] H-induced Metallization of Single Crystal ZnO : Dependence on the Atomic Composition of the Substrate Surface (2010)
  • Author(s): K. Ozawa, K. Mase
  • Organizer: 37th International Conference on Vacuum Ultraviolet and X-ray Physics
  • Place of Presentation: Vancouver, Canada
  • Year and Date: 2010-07-12
• [Presentation] 分子吸着による酸化亜鉛表面の金属化 (2010)
  • Author(s): 小澤健一,間瀬一彦
  • Organizer: 第90日本化学会春季年会
  • Place of Presentation: 東大阪
  • Year and Date: 2010-03-27
• [Presentation] ZnO表面における水素吸着誘起金属化の表面依存性 (2010)
  • Author(s): 小澤健一,間瀬一彦
  • Organizer: 第65回日本物理学会年次大会
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-21
• [Presentation] ZnO表面の水素誘起金属化における表面構造依存性 (2010)
  • Author(s): 小澤健一,間瀬一彦
  • Organizer: 第27回フォトンファクトリーシンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2010-03-09
• [Presentation] 新BL-13A(高輝度VUV・SX分光ビームライン)専用角度分解光電子分光装置の高度化 (2010)
  • Author(s): 小澤健一,馬場暁久,櫻井岳暁,坂本一之,菊地貴司,間瀬一彦
  • Organizer: 第23回日本放射光学会年回・放射光科学合同シンポジウム
  • Place of Presentation: 姫路
  • Year and Date: 2010-01-09
• [Presentation] 酸化亜鉛表面の吸着誘起金属化現象 (2009)
  • Author(s): 小澤健一,間瀬一彦
  • Organizer: 第29回表面科学学術講演会
  • Place of Presentation: 東京
  • Year and Date: 2009-10-28
• [Presentation] Characterization of Hydrogen-induced Metallic State on the ZnO Surfaces (2009)
  • Author(s): K. Ozawa, K. Mase
  • Organizer: 11th International Conference on Electronic Spectroscopy and Structure
  • Place of Presentation: Nara, Japan
  • Year and Date: 2009-10-07
• [Presentation] 分子ドーピングによる酸化亜鉛の二次元金属化 (2009)
  • Author(s): 小澤健一,間瀬一彦
  • Organizer: 第5回放射光表面科学部会シンポジウム
  • Place of Presentation: 奈良
  • Year and Date: 2009-10-05
• [Presentation] Hydrogen-induced metallization of the ZnO surface (2009)
  • Author(s): K. Ozawa, K. Mase
  • Organizer: 12th International Conference on the Formation of Semiconductor Interfaces
  • Place of Presentation: Weimar, Germany
  • Year and Date: 2009-07-07