New fuel for Organic Solar Cells?
Researchers from CNST of IIT, in collaboration with Konarka and Politecnico di Milano, discovered a new mechanism at the heart of the physics governing Organic Solar Cells (OSC). Theoretical calculations predict efficiencies of up to 20% for OSC, but experimental evidence shows different results.
By studying a new class of promising materials, which recently brought OSC to the new record efficiency of 10%, Grancini and co-authors found where the hidden energy may lie. They discovered that in such class of materials the conversion of light into electrical power happens via an ultrafast process, a mechanism which is different from what was expected and experimentally verified in other materials of common use in OSC. This discovery could open a new point of view in the engineering of molecules and organic compounds for organic solar cells.
The study was published on Nature Materials (Nature Materials 12, 29–33 (2013) doi:10.1038/nmat3502).