Development of semiconductor tandem junctions and photocatalytic devices

The aim of this topic is to develop and study semiconductor tandem junctions and water oxidation catalysts for an artificial water splitting device. Two main scientific challenges will be addressed: i) to synthesize and optimize highly structured semiconductor heterojunctions that combine efficient light absorption with good charge separation and transport, and ii) to study the mechanism of water oxidation catalysis on both oxide and molecular catalysts. The project will be carried out by two groups, one at TU Delft (Van de Krol) and one in Leiden University (Koper), in close collaboration with other groups in Leiden and Amsterdam who will deliver components for the water splitting device.

The project will be a success if:
- We have been able to identify the key steps in the mechanism of oxygen evolution, both on oxide electrodes and molecular catalysts, and if we have been able to translate that into a catalyst that may be incorporated in the device.
− We have been able to develop an inorganic semiconductor heterojunction that efficiently combines light absorption and charge separation, to be functionalized with water oxidation and/or reduction catalysts developed in this and other projects, that can serve as the basis for a hybrid water splitting device.
− We have been able to develop suitable nanostructured scaffolds to which the molecular catalysts, antennae systems and charge separators to be developed in the other projects can be attached to form a hybrid organic-inorganic tandem device.

The work in this project is primarly done at Delft University of Technology, Dept. Chemical Engineering and Leiden University, Leiden Institute of Chemistry, Gorlaeus Laboratories


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