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  DEPARTMENT  

George Leftheriotis

George Leftheriotis
Title:   Assistant Professor 
Sector:   The Applied Physics Division 
E-mail:   glefther[_at_]physics.upatras.gr 
Phone:   2610-996793, 997446    Fax:  2610 991980 
Address:     


Courses


C.V.

Dr George Leftheriotis is assistant professor in Renewable Energy Sources, at the Department of Physics, University of Patras.

He studied Physics at the University of Patras and was awarded the BSc degree in 1987. Having received an EU grant, he carried out postgraduate studies in the field of Wind Energy at Warwick University, UK. He received the MSc degree in Engineering (by research, with distinction) in 1989 with a thesis focused on the use of leading edge vortices produced by slender delta wings as wind power augmenters. In 1992 he received the PhD degree in Engineering  with a thesis concerning the design of wind turbines to operate within the delta wing vortices.

During the period 1995-2009 he has worked as a research fellow at the Energy and Environment Laboratory of Physics Department, University of Patras, taking part in five European research projects (Joule, Energie 4, TMR-LSF) and in more than ten national projects. In 2009 he obtained his present position.

During the last decade his research interests have switched to the development of materials and devices for renewable energy applications, such as low-e coatings, photovoltaics and electrochromics. He has worked on the production of novel materials and devices with vacuum and chemical techniques and on their optical, electrical and electrochemical characterization.

His research activity has led to the publication of 25 papers in refereed international journals, 27 contributions to international conferences and 16 to national conferences. He has contributed to the writing of chapters in two review books on renewable energy and chromogenic materials. He has about 300 citations (h-factor 11).


Scientific Interests
Renewable Energy Sourses
Renewable Energy Sources
Electrochromics, photoelectrochromics
Photovoltaics
Wind Energy


Publications
  1. G. Leftheriotis and C. G. Carpenter, Development of a procedure for the design of a wind turbine to operate in the vortex field generated by a slender delta wing
    Wind Engineering, 14 , 153, 1990
  2. G. Leftheriotis and C. G. Carpenter, Investigation of the vortex field generated by a slender delta wing
    Wind Engineering, 14, 141, 1990
  3. G. Leftheriotis and C. G. Carpenter, Investigation of Reynolds number effects on the design of a delta wing vortex wind turbine
    Wind Engineering, 15 , 8, 1991
  4. G. Leftheriotis and C. G. Carpenter, Investigation of the delta wing- turbine system suitability for large scale applications
    Wind Engineering, 15 , 16, 1991
  5. G. Leftheriotis and C. G. Carpenter, Development of a wind turbine to operate in the vortex filed generated by a slender delta wing
    Journal of Wind Engineering and Industrial Aerodynamics, 39 , 417, 1992
  6. G. Leftheriotis, P. Yianoulis, D. Patrikios, Deposition and optical properties of optimised ZnS/Ag/ZnS thin films for energy saving applications
    Thin Solid Films, 306 , 92, 1997
  7. S. Papaefthimiou, G. Leftheriotis, P. Yianoulis, Electrochromic phenomena in transition metal oxide thin films prepared by thermal evaporation
    Ionics, 4 , 321, 1998
  8. P. W. Griffiths, M. Di Leo, P. Cartwright, P. C. Eames, P. Yianoulis, G. Leftheriotis and B. Norton, Fabrication of evacuated glazing at low temperatures
    Solar Energy, 63 , 243, 1998
  9. G. Leftheriotis, P. Yianoulis, Characterisation and stability of low emittance multiple coatings for glazings applications
    Solar Energy Materials and Solar Cells, 58 , 185, 1999
  10. S. Papaefthimiou, G. Leftheriotis and P. Yianoulis, Study of electrochromic incorporating WO3, MoO3, WO3-MoO3 and V2O5 coatings
    Thin Solid Films, 343-344 , 180, 1999
  11. G. Leftheriotis, S. Papaefthimiou, P. Yianoulis, Development of multilayer transparent conductive coatings
    Solid State Ionics, 136-137 , 655, 2000
  12. G. Leftheriotis, S. Papaefthimiou, P. Yianoulis, Integrated low emittance-electrochromic devices incorporating ZnS/Ag/ZnS coatings as transparent conductors
    Solar Energy Materials and Solar Cells, 61 , 107, 2000
  13. G. Leftheriotis, P. Yianoulis, Thermal properties of building materials evaluated by a dynamic simulation of a test cell
    Solar Energy, 69 , 295, 2000
  14. S. Papaefthimiou, G. Leftheriotis, P. Yianoulis, Advanced electrochromic devices based on WO3 thin films
    Electrochimica Acta, 46 , 2145, 2001
  15. A. Siokou , G. Leftheriotis, S. Papaefthimiou, P. Yianoulis, Effect of the tungsten and molybdenum oxidation states on the thermal coloration of amorphous WO3 and MoO3 films
    Surface Science, 482-5 , 294, 2001
  16. G. Leftheriotis, S. Papaefthimiou, P. Yianoulis, A. Siokou, Effect of the tungsten oxidation states in the thermal coloration and bleaching of amorphous WO3 films
    Thin Solid Films, 384 , 298, 2001
  17. S. Papaefthimiou, G. Leftheriotis and P. Yianoulis, Study of WO3 films with textured surfaces for improved electrochromic performance
    Solid State Ionics, 139 , 135, 2001
  18. G. Leftheriotis, S. Papaefthimiou, P. Yianoulis, A. Siokou, D. Kefalas, Structural and electrochemical properties of opaque sol–gel deposited WO3 layers
    Applied Surface Science, 218 , 275, 2003
  19. A. Siokou, S. Ntais, S. Papaefthimiou, G. Leftheriotis and P. Yianoulis, Influence of the substrate on the electrochromic characteristics of lithiated α-WO3 layers
    Surface Science, 566–568 , 1168, 2004
  20. G. Leftheriotis, S. Papaefthimiou and P. Yianoulis, The effect of water on the electrochromic properties of WO3 films prepared by vacuum and chemical methods
    Solar Energy Materials and Solar Cells, 83 , 115, 2004
  21. S. Papaefthimiou, G. Leftheriotis, P. Yianoulis, T.J. Hyde, P.C. Eames, Y. Fang, P.-Y. Pennarun, P. Jannasch, Development of electrochromic evacuated advanced glazing
    Energy and Buildings, 38 , 1455, 2006
  22. A. Siokou, S. Ntais, V. Dracopoulos, S. Papaefthimiou, G. Leftheriotis, P. Yianoulis, Substrate related structural, electronic and electrochemical properties of evaporated CeOx ion storage layers
    Thin Solid Films, 514 , 87, 2006
  23. G. Leftheriotis, S. Papaefthimiou , P. Yianoulis, Dependence of the estimated diffusion coefficient of LixWO3 films on the scan rate of cyclic voltammetry experiments
    Solid State Ionics, 178 , 259, 2007
  24. G. Leftheriotis and P. Yianoulis , Development of electrodeposited WO3 films with modified surface morphology and improved electrochromic properties
    Solid State Ionics 179 , 2192, 2008
  25. G. Leftheritotis, G. Syrrokostas, P. Yianoulis, Development of photoelectrochromic devices for dynamic solar control in buildings
    Solar Energy Materials and Solar Cells 94 , 2304, 2010
  26. M. Giannouli, G. Leftheriotis, The effect of precursor aging on the morphology and electrochromic performance of electrodeposited tungsten oxide films
    Solar Energy Materials and Solar Cells 95, 1932, 2011
  27. G. Syrrokostas, A. Siokou, G. Leftheriotis and P. Yianoulis, Degradation mechanisms of Pt counter electrodes for dye sensitized solar cells
    Solar Energy Materials and Solar Cells 103, 119, 2012
  28. G. Leftheritotis, G. Syrrokostas, P. Yianoulis, Partly covered photoelectrochromic devices with enhanced coloration speed and efficiency
    Solar Energy Materials and Solar Cells 96, 86, 2012