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La XaRMAE i l'IREC organitzen la conferència: Understanding carrier dynamics in water splitting with metal oxide semiconductors

Understanding carrier dynamics in water splitting with metal oxide semiconductors

 

Sixto Giménez
Grup de Dispositius Fotovoltaics i Optoelectrònics Departament de Física, Universitat Jaume I 12071 Castelló -- Spain

 

July 3rd, 2013
Catalonia Institute for Energy Research (IREC)
Venue: University of Barcelona
Spain

 

In the last years, water splitting with metal oxide semiconductors has attracted a great deal of attention as a promising technology to provide fuels with the only input of sunlight. Metal oxide semiconductors appear as candidate systems to photo-oxidize water and nanostructuring strategies together with the addition of co-catalysts have been widely employed in order to increase the energy conversion efficiency. In this context, the basic understanding of the traffic of carriers leading to the interfacial electrochemical reactions is a key issue to rationalize the both synthetic routes for materials development and device engineering. In the present talk, we will focus on the interpretation of carrier dynamics based on physical modeling of photoelectrochemical devices fed by experimental results obtained from electrochemical characterization (cyclic voltammetry and impedance spectroscopy). We will examine the role of surface states on water oxidation with Fe2O3 and the effect of catalytic layers of Cobalt and Irididum based systems.

                                                  Bosch i gimpera     dursi