Electrical properties of niobium-doped titanium dioxide. 1. Defect disorder

L. R. Sheppard; T. Bak; J. Nowotny

doi:10.1021/jp0637025

Electrical properties of niobium-doped titanium dioxide. 1. Defect disorder

L. R. Sheppard
, T. Bak
, J. Nowotny

University of New South Wales

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

61 Citations (Scopus)

Abstract

The present work reports the electrical conductivity and thermoelectric power for Nb-doped TiO₂ at elevated temperatures (1073-1298 K) in the gas phase of controlled oxygen activity, 10^-14 Pa < p(O ₂) < 75 kPa. It is shown that in reduced conditions the Nb-doped TiO₂ exhibits metallic-type conductivity. This finding paves the way for the development of high-performance photoelectrodes with substantially reduced internal energy losses during charge transport. The present work also determined the equilibrium constant for the formation of oxygen vacancies and titanium vacancies for Nb-doped TiO₂.

Original language	English
Pages (from-to)	22447-22454
Number of pages	8
Journal	Journal of Physical Chemistry B
Volume	110
Issue number	45
DOIs	https://doi.org/10.1021/jp0637025
Publication status	Published - 16 Nov 2006
Externally published	Yes

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abstract = "The present work reports the electrical conductivity and thermoelectric power for Nb-doped TiO2 at elevated temperatures (1073-1298 K) in the gas phase of controlled oxygen activity, 10-14 Pa < p(O 2) < 75 kPa. It is shown that in reduced conditions the Nb-doped TiO2 exhibits metallic-type conductivity. This finding paves the way for the development of high-performance photoelectrodes with substantially reduced internal energy losses during charge transport. The present work also determined the equilibrium constant for the formation of oxygen vacancies and titanium vacancies for Nb-doped TiO2.",

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AU - Sheppard, L. R.

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Y1 - 2006/11/16

N2 - The present work reports the electrical conductivity and thermoelectric power for Nb-doped TiO2 at elevated temperatures (1073-1298 K) in the gas phase of controlled oxygen activity, 10-14 Pa < p(O 2) < 75 kPa. It is shown that in reduced conditions the Nb-doped TiO2 exhibits metallic-type conductivity. This finding paves the way for the development of high-performance photoelectrodes with substantially reduced internal energy losses during charge transport. The present work also determined the equilibrium constant for the formation of oxygen vacancies and titanium vacancies for Nb-doped TiO2.

AB - The present work reports the electrical conductivity and thermoelectric power for Nb-doped TiO2 at elevated temperatures (1073-1298 K) in the gas phase of controlled oxygen activity, 10-14 Pa < p(O 2) < 75 kPa. It is shown that in reduced conditions the Nb-doped TiO2 exhibits metallic-type conductivity. This finding paves the way for the development of high-performance photoelectrodes with substantially reduced internal energy losses during charge transport. The present work also determined the equilibrium constant for the formation of oxygen vacancies and titanium vacancies for Nb-doped TiO2.

UR - https://www.scopus.com/pages/publications/33751215840

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ER -

Electrical properties of niobium-doped titanium dioxide. 1. Defect disorder

Abstract

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