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Solar Cells for a Bright Future
Flexible Solar Cells
Dye-Sensitized Solar Cells
Small-Molecule Solar Cells
Mapping Solar Cells
Solid-State Dye-Sensitized Solar Cells
Organic Solar Cells on Precision Fabric
Dye-Sensitized Solar Cell with TiO2 Inverse-Opal Photoelectrodes
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Tailor-Made Optoelectrical MaterialsDue to their excellent performance in organic solar cells and the high hole mobilities in field-effect transistors polythiophenes represent a widely used π-conjugated system in organic electronics. However, linear polythiophenes are associated with high anisotropic properties due to their one-dimensional molecular architecture. The problem of anisotropy can be circumvented by architectures with higher dimensionalities. Ludwigs and co-workers from the University of Freiburg introduce a versatile one-pot synthesis towards hyperbranched polythiophenes based on oxidative coupling of branched monomers with FeCl3 in chloroform. Small variations in building units and architecture lead to large differences of absorption and photoluminescence properties allowing the tailor made design of functional materials with potential applications in optoelectronics.
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