Solar energy conversion with nanoheterostructures
Event details
| Date | 26.09.2013 |
| Hour | 16:30 › 17:30 |
| Speaker |
Prof. Juan Bisquert Professor of Applied Physics Photovoltaics and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain http://www.elp.uji.es/jb.php |
| Location | |
| Category | Conferences - Seminars |
Research in solar energy conversion employing nanoheterostructures covers a wide variety of material systems: dye sensitized solar cells, organic solar cells, quantum dot solar cells, solar fuel devices. We discuss the basic structure of solar energy converters, consisting on an absorber material with selective contacts that also perform specific charge transfer or catalytic reaction in order to convert carriers to electricity or fuel. The ideas of Fermi level splitting, high quantum efficiency, and fundamental physical efficiencies are reviewed. Then we address the mechanisms of the mentioned system, showing general features as well as specific properties that have been discovered using impedance spectroscopy methods and related techniques. Experimental information is derived from recombination resistance and capacitance of the cells, which provides key insights about the separation of energetic effects, and kinetics of recombination. In solution processed materials there is a strong convolution of the disorder in the energy axis with the charge transfer probability. Finally we discuss some recently discovered mechanism of quantum dot layer solar cells and perovskite solar cells.
Practical information
- General public
- Free
Organizer
- Dr Frank van Mourik
Contact
- Frank van Mourik
http://lsu.epfl.ch