The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds

Tetsuo Yamashita; Toshiaki Enoki; Takayuki Miyamae; Takafumi Miyazaki

doi:10.1080/10587259808045343

The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds

Tetsuo Yamashita, Toshiaki Enoki, Takayuki Miyamae, Takafumi Miyazaki

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

Abstract

The ultraviolet photoelectron spectra measurements for 1st and 2nd stage potassium-oxygen-graphite intercalation compounds (KO_x-GICs) were carried out for the electronic structure around the Fermi level E_F. The dependence of the photoelectron spectra upon the incident photon energy suggests the presence of the oxygen electronic states around E_F. The temperature dependence of the thermoelectric power (TEP) of KO_x-GICs reveals the positive TEP below around 150 K for 1st stage compound, which suggests the contribution of hole carriers to the transport properties in contrast to the expectation of negative TEP endorsed by the donor type character of KO_x-GICs. These experimental findings prove the contribution of intercalate to the electronic structure and transport properties.

Original language	English
Pages (from-to)	243-248
Number of pages	6
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume	310
DOIs	https://doi.org/10.1080/10587259808045343
Publication status	Published - 1998
Externally published	Yes

Keywords

Electronic structure
Graphite intercalation compounds
Photoelectron spectra
Thermoelectric power

ASJC Scopus subject areas

Condensed Matter Physics

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10.1080/10587259808045343

Cite this

Yamashita, T., Enoki, T., Miyamae, T., & Miyazaki, T. (1998). The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds. Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 310, 243-248. https://doi.org/10.1080/10587259808045343

The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds. / Yamashita, Tetsuo; Enoki, Toshiaki; Miyamae, Takayuki et al.

In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 310, 1998, p. 243-248.

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

Yamashita, T, Enoki, T, Miyamae, T & Miyazaki, T 1998, 'The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds', Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, vol. 310, pp. 243-248. https://doi.org/10.1080/10587259808045343

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title = "The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds",

abstract = "The ultraviolet photoelectron spectra measurements for 1st and 2nd stage potassium-oxygen-graphite intercalation compounds (KOx-GICs) were carried out for the electronic structure around the Fermi level EF. The dependence of the photoelectron spectra upon the incident photon energy suggests the presence of the oxygen electronic states around EF. The temperature dependence of the thermoelectric power (TEP) of KOx-GICs reveals the positive TEP below around 150 K for 1st stage compound, which suggests the contribution of hole carriers to the transport properties in contrast to the expectation of negative TEP endorsed by the donor type character of KOx-GICs. These experimental findings prove the contribution of intercalate to the electronic structure and transport properties.",

keywords = "Electronic structure, Graphite intercalation compounds, Photoelectron spectra, Thermoelectric power",

author = "Tetsuo Yamashita and Toshiaki Enoki and Takayuki Miyamae and Takafumi Miyazaki",

note = "Funding Information: The authors wish to thank Dr. k Moore Eor supplying HOPG samples. We are grateful to JSPS research feuowShips for support of this research. This work is partially supported by the Grant-in-Aidf or Scientilic Rcsearch No. 68404048 and OS230211 h mthe Ministry of Education, Science and Culture, Japan.",

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doi = "10.1080/10587259808045343",

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AU - Miyamae, Takayuki

AU - Miyazaki, Takafumi

N1 - Funding Information: The authors wish to thank Dr. k Moore Eor supplying HOPG samples. We are grateful to JSPS research feuowShips for support of this research. This work is partially supported by the Grant-in-Aidf or Scientilic Rcsearch No. 68404048 and OS230211 h mthe Ministry of Education, Science and Culture, Japan.

PY - 1998

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N2 - The ultraviolet photoelectron spectra measurements for 1st and 2nd stage potassium-oxygen-graphite intercalation compounds (KOx-GICs) were carried out for the electronic structure around the Fermi level EF. The dependence of the photoelectron spectra upon the incident photon energy suggests the presence of the oxygen electronic states around EF. The temperature dependence of the thermoelectric power (TEP) of KOx-GICs reveals the positive TEP below around 150 K for 1st stage compound, which suggests the contribution of hole carriers to the transport properties in contrast to the expectation of negative TEP endorsed by the donor type character of KOx-GICs. These experimental findings prove the contribution of intercalate to the electronic structure and transport properties.

AB - The ultraviolet photoelectron spectra measurements for 1st and 2nd stage potassium-oxygen-graphite intercalation compounds (KOx-GICs) were carried out for the electronic structure around the Fermi level EF. The dependence of the photoelectron spectra upon the incident photon energy suggests the presence of the oxygen electronic states around EF. The temperature dependence of the thermoelectric power (TEP) of KOx-GICs reveals the positive TEP below around 150 K for 1st stage compound, which suggests the contribution of hole carriers to the transport properties in contrast to the expectation of negative TEP endorsed by the donor type character of KOx-GICs. These experimental findings prove the contribution of intercalate to the electronic structure and transport properties.

KW - Electronic structure

KW - Graphite intercalation compounds

KW - Photoelectron spectra

KW - Thermoelectric power

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The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds

Abstract

Keywords

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