Electronic structure in the band-gap region of protonic conductor SrZr 0.90Y0.10O3-δ

Tohru Higuchi; Hiroshige Matsumoto; Tetsuo Shimura; Keiji Yashiro; Tatsuya Kawada; Junichiro Mizusaki; Shik Shin; Takeyo Tsukamoto

doi:10.1143/JJAP.43.5419

Electronic structure in the band-gap region of protonic conductor SrZr _0.90Y_0.10O_3-δ

Tohru Higuchi, Hiroshige Matsumoto, Tetsuo Shimura, Keiji Yashiro, Tatsuya Kawada, Junichiro Mizusaki, Shik Shin, Takeyo Tsukamoto

Advanced Energy Conversion Systems Thrust

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The electronic structure in the band-gap region of protonic conductor SrZr_0.90Y_0.10O_3-δ was studied by soft-X-ray absorption spectroscopy (XAS). The O 1s XAS spectrum of air-annealed SrZr_0.90Y_0.10O_3-δ exhibits three distinct features, namely, the holes on top of the valence band, acceptor-induced level just above the Fermi level and Zr 4d defect-induced level at the bottom of the conduction band, which are lower in the O 1s XAS spectrum of wet-annealed SrZr_0.90Y_0.10O_3-δ. These findings directly indicate that the doped hydrogen compensates the presence of the holes.

Original language	English
Pages (from-to)	5419-5420
Number of pages	2
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	43
Issue number	8 A
DOIs	https://doi.org/10.1143/JJAP.43.5419
Publication status	Published - Aug 2004

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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Electronic structure in the band-gap region of protonic conductor SrZr _0.90Y_0.10O_3-δ. / Higuchi, Tohru; Matsumoto, Hiroshige; Shimura, Tetsuo; Yashiro, Keiji; Kawada, Tatsuya; Mizusaki, Junichiro; Shin, Shik; Tsukamoto, Takeyo.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 43, No. 8 A, 08.2004, p. 5419-5420.

Research output: Contribution to journal › Article › peer-review

Higuchi, Tohru ; Matsumoto, Hiroshige ; Shimura, Tetsuo ; Yashiro, Keiji ; Kawada, Tatsuya ; Mizusaki, Junichiro ; Shin, Shik ; Tsukamoto, Takeyo. / Electronic structure in the band-gap region of protonic conductor SrZr _0.90Y_0.10O_3-δ. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2004 ; Vol. 43, No. 8 A. pp. 5419-5420.

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abstract = "The electronic structure in the band-gap region of protonic conductor SrZr0.90Y0.10O3-δ was studied by soft-X-ray absorption spectroscopy (XAS). The O 1s XAS spectrum of air-annealed SrZr0.90Y0.10O3-δ exhibits three distinct features, namely, the holes on top of the valence band, acceptor-induced level just above the Fermi level and Zr 4d defect-induced level at the bottom of the conduction band, which are lower in the O 1s XAS spectrum of wet-annealed SrZr0.90Y0.10O3-δ. These findings directly indicate that the doped hydrogen compensates the presence of the holes.",

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AU - Yashiro, Keiji

AU - Kawada, Tatsuya

AU - Mizusaki, Junichiro

AU - Shin, Shik

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