Journal
APPLIED PHYSICS EXPRESS
Volume 1, Issue 11, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1143/APEX.1.111203
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Elements Science and Technology Project
- New Energy and Industrial Technology Development Organization (NEDO)
- Chemistry Innovation
- Grant-in-Aid for Young Scientists (B)
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We have investigated electronic band structure of a transparent conducting oxide, Nb-doped anatase TiO2 (TNO), by means of first-principles band calculations and photoemission measurements. The band calculations revealed that Nb 4d orbitals are strongly hybridized with Ti 3d ones to form a d-nature conduction band, without impurity states in the in-gap region, resulting in high carrier density exceeding 10(21) cm(-3) and excellent optical transparency in the visible region. Furthermore, we confirmed that the results of valence band and core-level photoemission measurements are consistent with prediction by the present band calculations. (C) 2008 The Japan Society of Applied Physics
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