Chemistry Letters, Vol.47, No.11, 1354-1356, 2018
Preparing Effective Panchromatic Hybrid Sensitizers Composed of Inorganic Quantum Dots and Organic Dyes
To make an effective panchromatic photo-sensitizer unit, inorganic lead sulfide (PbS) and cadmium sulfide (CdS) quantum dots (QDs) were deposited sequentially over mesoporous TiO2 film by the successive ionic layer adsorption and reaction (SILAR) process and then two molecular dyes were adsorbed successively to boost the response in the near-IR and visible regions, respectively. Using a cobalt (II/III) redox mediator, the photovoltaic performances of these hybrid sensitizer-anchored photo-anodes were tested to demonstrate a gradual increase in panchromatic response after the addition of each sensitizer.