Proceedings of Online International Conference on Hybrid and Organic Photovoltaics (OnlineHOPV20)
Publication date: 22nd May 2020
The photoanodes consisting of TiO2 sensitized with the standard ruthenium compounds (RuP - absorber, RuOEC – catalyst) have been intensively examined to incorporate them into the water-splitting systems driven by solar radiation [1,2]. We show a clear dependency of the TiO2 conduction band position on the dye-TiO2 electron transfer rate. The former is related to the specific adsorption of different electrolyte ions onto the sensitized electrode since no direct-pH effect was found. Moreover, we have observed a fast component of electron transfer from the catalyst to the oxidized dye below 100 ps.
Funding: NCN (National Science Centre, Poland) under project 2015/18/E/ST4/00196
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