TY - JOUR
T1 - The contribution of intercalate to the electronic structure and transport properties for potassium-oxygen-graphite intercalation compounds
AU - Yamashita, Tetsuo
AU - Enoki, Toshiaki
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
Y1 - 1998
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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U2 - 10.1080/10587259808045343
DO - 10.1080/10587259808045343
M3 - Article
AN - SCOPUS:0031640320
SN - 1542-1406
VL - 310
SP - 243
EP - 248
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
ER -