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JOURNAL OF APPLIED PHYSICS
Volume 101, Issue 9, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2721748
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The transport properties of a d-electron-based transparent conducting oxide, Nb-doped anatase Ti1-xNbxO2, were investigated as a function of the Nb content x. From optical resistivity spectra, the static effective mass was evaluated to be similar to 0.4m(0) in the low-carrier-concentration (n(e)) regime, which is approximately the same as those of conventional transparent conducting oxides (TCOs), and two orders of magnitude smaller than that reported for rutile TiO2. The Hall mobility at room temperature, which is maximized at around x=0.01 (n(e)similar to 10(21) cm(-3)), was found to be mainly dominated by optical phonon scattering unlike that of other TCOs. (c) 2007 American Institute of Physics.
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