Nano-NEMCA phenomena investigated by means of electron spectroscopy

通过电子能谱研究纳米 NEMCA 现象

• 批准号: 16079205
• 负责人: YAMAGUCHI Shu
• 金额: $ 33.02万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2008
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16079205/
• 关键词: ナノイオニクス; 固体イオ二クス; 空間電荷層; ショットキー障壁; 軟X線分光法; NEMCA; 電極反応; 混成電位; 固体イオニクス

電子分光を用いた物理的手法と電気化学的測定を織り交ぜて,ヘテロ界面近傍における電子構造の変調と電気化学的特性,特に速度論的性質に現れる化学特性の変化を検討した.正逆光電子分光,軟X線分光,共鳴電子分光の各種方法を組み合わせて酸化物表面でのバンド屈曲および表面準位形成による電子状態の変化を明らかにした.これらの手法と電気化学的測定で得られる特性との相関を検討した.BaPr_<1-x>Yb_xO_3の伝導特性は電子-ホールペアの強い相互作用による特異な電子構造に起因し,Pt微粒子を粒界に分散させたCe_<1-x>Gd_xO_2における伝導度の向上は界面への酸素空孔注入メカニズムで説明した.さらに,電気化学的に分極した状態下での硬X 線光電子分光の測定手法を確立し,電子-イオン混合伝導体の不定比性変化に伴う変化を観察した.

Electron spectroscopy uses physical methods and electrochemistry to determine electron structure, electron structure and electrochemistry properties near the electron interface, especially velocity theory properties, and chemical properties. A combination of various methods for positive electron spectroscopy, soft X-ray spectroscopy, and resonance electron spectroscopy has been developed to clarify the electronic state of surface buckling and surface alignment formation on acidified materials. The conductivity of BaPr_ Yb_xO_3 is due to the electron-electron interaction and the specific <1-x>electronic structure. The dispersion of Pt particles in the grain boundary is due to the conductivity of Ce_<1-x>Gd_xO_2 and the upward interface is due to the acid hole injection. In addition, the determination method of hard X-ray photoelectron spectroscopy under the polarization state of electrochemistry has been established, and the heterogeneous transformation of electron-electron mixed conductors has been observed.

项目成果

Unoccupied Electronic State of SrTi1-xNbxO3 Observed by Inverse-Photoemission Spectroscopy

• DOI: 10.1143/jjap.43.7623
• 发表时间: 2004-11
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: T. Higuchi;Y. Tezuka;T. Hattori;S. Yamaguchi;Shik Shin;T. Tsukamoto

Electronic Structure of Ce1-xNdxO2-δProbed by Soft-X-Ray Spectroscopy

软X射线光谱探测Ce1-xNdxO2-δ的电子结构

• 发表时间: 2004
• 期刊: Jpn. J. Appl. Phys 43
• 作者: T. Higuchi;S. Yamaguchi;K. Kobayashi;T. Hattori;S. Shin;他
• 通讯作者: 他

Synthesis and characterization of Y-doped BaZrO_3 oxide protonic nanoceramics and thin films by sol-gel method

溶胶-凝胶法合成Y掺杂BaZrO_3氧化物质子纳米陶瓷及薄膜并表征

• 发表时间: 2006
• 作者: R. B. Cervera;Y. Oyama;K. Kobayashi;S. Yamaguchi
• 通讯作者: S. Yamaguchi

Phase relation in BaO-ZrO_2-LnO_<1.5> (Ln=Y, Sc) system and chemical stability of doped BaZrO_3

BaO-ZrO_2-LnO_<1.5> (Ln=Y, Sc)体系中的相关系及掺杂BaZrO_3的化学稳定性

• 发表时间: 2006
• 作者: Y. Oyama;A. Kojima;K. Tanaka;S. Yamaguchi
• 通讯作者: S. Yamaguchi

Proton incorporation and defect chemistry of Yb-doped BaPrO3

Yb 掺杂 BaPrO3 的质子掺入和缺陷化学

• 发表时间: 2007
• 期刊: Solid State Ionics 178
• 作者: S. Mimuro;S. Shibako;Y. Oyama;K. Kobayashi;T. Higuchi;S. Shin;S. Yamaguchi
• 通讯作者: S. Yamaguchi