Doctor Leigh Sheppard

Journal Articles

• Sheppard, L., Sheppard, L., Dittrich, T., Nowotny, M. and Nowotny, M. (2012), 'The impact of niobium surface segregation on charge separation in niobium-doped titanium dioxide', Journal of Physical Chemistry C, 7.
• Sheppard, L., Dittrich, T., Nowotny, J. and Bak, T. (2010), 'Surface photovoltage studies of nonstoichiometric rutile titanium dioxide', Applied Physics Letters, .
• Nowotny, M., Bak, T., Nowotny, J. and Sheppard, L. (2010), 'Semiconducting properties of single crystal TiO2 in the n-p transition region', Journal of the Australian Ceramic Society, 4.
• Sheppard, L., Atanacio, A., Bak, T., Nowotny, J., Nowotny, M. and Prince, K. (2009), 'Niobium diffusion in niobium-doped titanium dioxide', Journal of Solid State Electrochemistry, 7.
• Bak, T., Nowotny, J., Nowotny, M. and Sheppard, L. (2009), 'Dynamics of TiO2-based photoelectrochemical cell', Ionics, 9.
• Hossain, F., Murch, G., Sheppard, L. and Nowotny, J. (2008), 'Optical properties of anatase and rutile titanium dioxide: An initio calculations for pure and anion-doped materials', Journal of Physics and Chemistry of Solids, 1009.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2008), 'Effect of cooling on electrical conductivity of Titanium Dioxide', Physica Status Solidi. B, 12.
• Bak, T., Nowotny, M., Nowotny, J. and Sheppard, L. (2008), 'Effect of Prolonged oxidation on the semiconducting properties of titanium dioxide', Journal of Physical Chemistry (C), 10.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2008), 'Mobility of charge carriers in titanium dioxide', Journal of Physical Chemistry C, 7.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2008), 'Defect Chemistry and electrical conductivity of titanium dioxide. 1. Defect diagrams', Journal of Physical Chemistry C, 12.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2008), 'Defect chemistry and electrical conductivity of TiO2. 2. Effect of aliovalent ions', Journal of Physical Chemistry C, 9.
• Sheppard, L., Bak, T. and Nowotny, J. (2008), 'Electrical properties of niobium doped Titanium dioxide III. Thermoelectric Power', Journal of Physical Chemistry C, 7.
• Nowotny, M., Sheppard, L., Bak, T. and Nowotny, J. (2008), 'Defect chemistry of TiO2. Applicationof Defect engineering in processing TiO2 photocatalysts', Journal of Physical Chemistry C, 26.
• Bak, T., Nowotny, M., Sheppard, L. and Nowotny, J. (2008), 'Charge Transport in Cr-doped titanium dioxide', Journal of Physical Chemistry C, 8.
• Sheppard, L., Bak, T., Nowotny, J. and Nowotny, M. (2008), 'Effect of Oxygen Activity on Niobium Segregation in Niobium-Doped Titanium Dioxide', Australasian Ceramic Society. Journal, 5.
• Nowotny, J., Bak, T., Sheppard, L. and Nowotny, M. (2008), 'Reactivity of Titanium Dioxide with Oxygen at Room Temperature and the Related Charge Transfer', American Chemical Society. Journal, 10.
• Tributsch, H., Bak, T., Nowotny, J. and Sheppard, L. (2008), 'Photoreactivity models for titanium dioxide with water', Energy Materials: Materials Science and Engineering for Energy Systems, 11.
• Sheppard, L., Atanacio, A., Bak, T., Nowotny, J. and Prince, K. (2007), 'Application of Secondary Ion Mass Spectrometry in Studies of Niobium Segregation in Niobium-Doped Titanium Dioxide', Australasian Ceramic Society. Journal, 6.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2007), 'Defect chemistry of titanium dioxide effect of interfaces', Australasian Ceramic Society. Journal, 7.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2007), 'Titanium dioxide for solar-hydrogen I. Functional properties', International Journal of Hydrogen Energy, 21.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2007), 'Titanium dioxide for solar-hydrogen II. Defect chemistry', International Journal of Hydrogen Energy, 14.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2007), 'Titanium dioxide for solar-hydrogen III: Kinetic effects at elevated temperatures', International Journal of Hydrogen Energy, 7.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2007), 'Titanium dioxide for solar-hydrogen IV. Collective and local factors in photoreactivity', International Journal of Hydrogen Energy, 9.
• Sheppard, L., Bak, T., Nowotny, J. and Nowotny, M. (2007), 'Titanium dioxide for solar-hydrogen V. Metallic-type conduction of Nb-doped TiO2', International Journal of Hydrogen Energy, 4.
• Nowotny, J., Bak, T., Burg, T., Nowotny, M. and Sheppard, L. (2007), 'Effect of Grain Boundaries on Semiconducting Properties of TiO2 at Elevated Temperatures', The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, 10.
• Nowotny, J., Bak, T., Sheppard, L. and Sorrell, C. (2007), 'Solar-Hydrogen: A Solid-State Chemistry Perspective', Advances in Solar Energy, 47.
• Sheppard, L. (2007), '75 Years of Climate Change, & Renewable Research Unchanged', AQ: Australian Quarterly, 3.
• Sheppard, L., Atanacio, T., Bak, T., Nowotny, J. and Prince, K. (2007), 'Bulk Diffusion of Niobium in Single Crystal TiO2', The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical, 5.
• Hossain, F., Murch, G., Sheppard, L. and Nowotny, J. (2007), 'Ab initio electronic structure calculation of oxygen vacancies in rutile titanium dioxide', Solid State Ionics, 7.
• Sheppard, L. and Nowotny, J. (2007), 'Materials for Hydrogen Energy', Advances in Applied Ceramics, .
• Sheppard, L. and Nowotny, J. (2007), 'Materials for photoelectrochemical energy conversion', Advances in Applied Ceramics, 12.
• Sugihara, S. and Sheppard, L. (2007), 'Development and basic study of TiO2 coatings', Advances in Applied Ceramics, 4.
• Sheppard, L., Bak, T. and Nowotny, J. (2007), 'Reactivity of TiO2 with water and oxygen: surface science perspective', Advances in Applied Ceramics, 8.
• Burg, T., Bak, T., Nowotny, J., Sheppard, L. and Sorrell, C. (2007), 'Effect of sintering on microstructure of TiO2 ceramics', Advances in Applied Ceramics, 6.
• Nakajima, T., Sheppard, L., Atanacio, A., Prince, K. and Nowotny, J. (2007), 'Niobium segregation in TiO2', Advances in Applied Ceramics, 7.
• Sheppard, L., Zhou, M., Atanacio, A., Bak, T., Nowotny, J. and Prince, K. (2007), 'Determination of niobium diffusion in titania and zirconia using secondary ion mass spectrometry', Advances in Applied Ceramics, 6.
• Hossain, F., Murch, G., Sheppard, L. and Nowotny, J. (2007), 'Reactivity of ideal and defected rutile TiO2 (110) surface with oxygen', Advances in Applied Ceramics, 6.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2006), 'TiO2 Surface Active Sites for Water Splitting', The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical, 4.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2006), 'Defect Disorder of Titanium Dioxide', The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical, 8.
• Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2006), 'Chemical diffusion in metal oxides. Example of TiO2', Ionics: international journal of ionics, 17.
• Bak, T., Nowotny, J., Nowotny, M. and Sheppard, L. (2006), 'Reactivity at the oxygen/titania interface and the related charge transfer', Ionics: international journal of ionics, 5.
• Sheppard, L., Bak, T. and Nowotny, J. (2006), 'Electrical Properties of Niobium-Doped Titanium Dioxide. I. Defect Disorder', The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical, 8.
• Sheppard, L., Bak, T. and Nowotny, J. (2006), 'Electrical Properties of Niobium-Doped Titanium Dioxide. II. Equilibration Kinetics', The Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical, 7.
• Sheppard, L., Bak, T. and Nowotny, J. (2006), 'Metallic TiO2', Physica Status Solidi. A: Applications and Materials, .
• Sheppard, L., Barnes, M., Kumar, S., Gerson, A., Ball, C., Bak, T., Nowotny, J. and Sorrell, C. (2006), 'Effect of Nb on the Structure of TiO2 Thin Films', Thin Solid Films, 6.
• Murch, G., Hossain, F., Sheppard, L. and Nowotny, J. (2006), 'The effect of defect disorder on the electronic structure of rutile TiO2-x', Defect and Diffusion Forum, 12.
• Nowotny, J., Sorrell, C., Sheppard, L. and Bak, T. (2005), 'Solar-hydrogen: Environmentally safe fuel for the future', International Journal of Hydrogen Energy, 24.
• Nowotny, J., Sorrell, C., Bak, T. and Sheppard, L. (2005), 'Solar-hydrogen: Unresolved problems in solid-state science', Solar Energy, 10.
• Bak, T., Burg, T., Kang, S., Nowotny, J., Rekas, M., Sheppard, L., Sorrell, C. and + 3 Externals, . (2003), 'Charge Transport in Polycrystalline Titanium Dioxide', Journal of Physics and Chemistry of Solids, 7.