Doctor Leigh Sheppard
SENIOR LECTURER,
Solar Energy Technologies
Personal
Qualifications
- Doctor of Philosophy University of New South Wales
UWS Organisational Unit (School / Division)
- Solar Energy Technologies
Contact
| Email: | L.Sheppard@uws.edu.au |
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| Extension: | 1745 |
| Mobile: | |
| Location: | M8.G.28 Hawkesbury |
| Website: |
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Biography
Dr Sheppard is currently an Australian Research Fellow and co-leader of the Solar Energy Technologies Research Group. He is actively involved in the development of novel titanium dioxide based semiconductors as photoelectrode materials for solar-driven water splitting. Dr Sheppard has a PhD in Materials Science and Enegineering from the University of New South Wales, where his project was titled "Defect Chemistry and Charge Transport in Niobium-Doped Titanium Dioxide". Dr Sheppard also has a Bachelor of Engineering (Ceramic - Hon I). At present Dr Sheppard has 50 published refereed journal papers.
This information has been contributed by Doctor Sheppard.
Publications
Chapters in Books
- Nowotny, J., Sorrell, C., Bak, T. and Sheppard, L. (2005), 'Defect Disorder, Transport, and Photo-electrochemical Properties of Titanium Dioxide', Materials for Energy Conversion Devices, Woodhead Publishing Ltd 9781855739321.
Journal Articles
- Sheppard, L. and Bello Lamo, M. (2013), 'Solute diffusion of platinum in rutile titanium dioxide', Journal of the American Ceramic Society, 5.
- 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.
Conference Papers
- Nowotny, J., Bak, T., Nowotny, M. and Sheppard, L. (2006), 'Application of Defect Chemistry for Engineering of Photosensitive Oxide Semiconductors', Proceedings of SPIE, the International Society for Optical Engineering: Solar hydrogen and nanotechnology. Conference, .
- Sheppard, L., Bak, T., Atanacio, T., Nowotny, J. and Prince, K. (2006), 'Effect of Niobium Segregation on the Surface Properties of Titanium Dioxide', Proceedings of SPIE, the International Society for Optical Engineering: Solar hydrogen and nanotechnology. Conference, .
Research
Current Projects
| Title: | Spin-Polarized Scanning Tunneling Microscope: A Critical Instrument for Expanding the Functionality of State-of-the-Art Oxide MBE System [via UNSW - no funding to UWS] |
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| Years: | 2013-01-01 - 2013-12-31 |
| ID: | P00021018 |
| UWS Researchers: | Leigh Sheppard and Maria Nowotny |
| Funding: |
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| Title: | Improving Solar Energy Utilisation by Splitting Water with Visible Light |
| Years: | 2011-01-01 - 2014-06-30 |
| ID: | P00018302 |
| UWS Researchers: | Leigh Sheppard, Maria Nowotny and Marta Bello Lamo |
| Funding: |
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| Title: | An Innovative Solid-State Approach to Enhanced Solar-Hydrogen Production |
| Years: | 2009-01-01 - 2013-12-31 |
| ID: | P00016712 |
| UWS Researchers: | Leigh Sheppard |
| Funding: |
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Previous Projects
| Title: | Solar Technologies Group - Transition Project |
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| Years: | 2008-10-02 - 2009-10-01 |
| ID: | P00016511 |
| UWS Researchers: | Janusz Nowotny and Leigh Sheppard |
| Funding: |
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| Title: | Energy and water efficient greenhouse design and operation |
| Years: | 2009-10-28 - 2010-05-27 |
| ID: | P00017601 |
| UWS Researchers: | Bill Bellotti, Jonathon Allen and Leigh Sheppard |
| Funding: |
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| Title: | Facilities of thermophysical characterisations at nanometre scale for development of advanced materials, energy technologies and biomedical components [via UNSW - no funding to UWS] |
| Years: | 2010-01-01 - 2010-12-31 |
| ID: | P00017149 |
| UWS Researchers: | Janusz Nowotny and Leigh Sheppard |
| Funding: |
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| Title: | Epitaxial Growth Facility for Advanced Materials [via UNSW - no funding to UWS] |
| Years: | 2012-05-18 - 2013-05-17 |
| ID: | P00020383 |
| UWS Researchers: | Leigh Sheppard and Maria Nowotny |
| Funding: |
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| Title: | A State-of-the-art Magnetic Property Measurement Facility for the Development of Advanced Materials and Biomedical Technologies in the Sydney Basin [via UNSW - no funding to UWS] |
| Years: | 2012-03-16 - 2013-03-15 |
| ID: | P00020384 |
| UWS Researchers: | Leigh Sheppard |
| Funding: |
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| Title: | A Comprehensive Magneto-Thermophysical Property Measurement System for the Development of Advanced Materials, Energy and Biomedical Technologies [via UNSW - no funding to UWS] |
| Years: | 2011-01-01 - 2011-12-31 |
| ID: | P00018996 |
| UWS Researchers: | Leigh Sheppard and Maria Nowotny |
| Funding: |
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