Electronic structure of proton conducting BaCe0.90Y0.10O3-δ

被引：37

作者：

Higuchi, T

Tsukamoto, T

Matsumoto, H

Shimura, T

Yashiro, K

Kawada, I

Mizusaki, J

Shin, S

Hattori, T

机构：

[1] Tokyo Univ Sci, Dept Appl Phys, Shinju Ku, Tokyo 1628601, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[3] Nagoya Univ, Ctr Integrated Res Sci & Engn, Nagoya, Aichi 4648603, Japan

[4] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[5] RIKEN, Hyogo 6795143, Japan

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 39-40期

关键词：

protonic conductor; BaCe1-xYxO3-delta; electronic structure; photoemission spectroscopy (PES); X-ray absorption spectroscopy (XAS); holes; X-RAY SPECTROSCOPY; PHOTOEMISSION-SPECTROSCOPY; PHASE-TRANSITIONS; PUMPING CAPACITY; BACEO3; SRCEO3; NONSTOICHIOMETRY; CAZRO3; RAMAN;

D O I：

10.1016/j.ssi.2005.09.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

The electronic structure of the protonic conductor Y-doped BaCeO3 (BaCe0.90Y0.10O3-delta) has been studied by soft-X-ray spectroscopy. The valence band of H-2-annealed BaCe0.90Y0.10O3-delta, which consists of the 0 2p states hybridized with Ce 4f states, shifts to the higher binding energy side by approximately 0.4 eV. In the air-annealed BaCe0.90Y0.10O3-delta, holes and acceptor levels are observed at the top of the valence band and just above E-F, respectively. Their intensities are lower in H-2-annealed BaCe0.90Y0.10O3-delta. These findings indicate directly that hydrogen doping compensates for the presence of the holes. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：2967 / 2970

页数：4

共 22 条

[1]

Phase transitions in BaCeO3:: neutron diffraction and Raman studies [J].