TY - JOUR
T1 - Electronic structure of protonic conductor BaCe0.90Y 0.10O3-δ Probed by soft-X-ray spectroscopy
AU - Higuchi, Tohru
AU - Matsumoto, Hiroshige
AU - Shimura, Tetsuo
AU - Yashiro, Keiji
AU - Kawada, Tatsuya
AU - Mizusaki, Junichiro
AU - Shin, Shik
AU - Tsukamoto, Takeyo
PY - 2004/6/1
Y1 - 2004/6/1
N2 - The electronic structure of the protonic conductor Y-doped BaCeO 3 (BaCe0.90Y0.10O3-δ) has been studied by photoemission spectroscopy and X-ray absorption spectroscopy. The Fermi level (EF) of H2-annealed BaCe0.90Y 0.10O3-δ shifts to the conduction band side by approximately 0.4 eV. The holes and acceptor level are observed at the top of the valence band and just above EF, respectively. Their intensities are lower in the H2-annealed BaCe0.90Y 0.10O3-δ, indicating that doped hydrogen enters hole and acceptor states. These findings indicate that the electronic structure of the protonic conductor BaCe0.90Y0.10O3-δ obeys the rigid-band model.
AB - The electronic structure of the protonic conductor Y-doped BaCeO 3 (BaCe0.90Y0.10O3-δ) has been studied by photoemission spectroscopy and X-ray absorption spectroscopy. The Fermi level (EF) of H2-annealed BaCe0.90Y 0.10O3-δ shifts to the conduction band side by approximately 0.4 eV. The holes and acceptor level are observed at the top of the valence band and just above EF, respectively. Their intensities are lower in the H2-annealed BaCe0.90Y 0.10O3-δ, indicating that doped hydrogen enters hole and acceptor states. These findings indicate that the electronic structure of the protonic conductor BaCe0.90Y0.10O3-δ obeys the rigid-band model.
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U2 - 10.1143/jjap.43.l731
DO - 10.1143/jjap.43.l731
M3 - Article
AN - SCOPUS:3242759841
SN - 0021-4922
VL - 43
SP - L731-L734
JO - Japanese Journal of Applied Physics, Part 2: Letters
JF - Japanese Journal of Applied Physics, Part 2: Letters
IS - 6 A
ER -