Tuesday, November 8, 2011, 11:00 am — Building 735 - Seminar Room, 2nd floor
Despite the long history of organic electronics, there has been only very little understanding how the chemistry of a particular compound relates to the properties of the final device. The main difficulty is that processes at all length scales equally contribute to the final efficiency. In solar cells, for example, the global morphology (micro- and nanometers) assists percolation of charges to the electrodes; the local molecular arrangement (on the Angstrom and nm scale) facilitates charge hopping, increasing the charge mobility. Finally, the electronic structure is tuned to achieve efficient photon harvesting, as well as creation, diffusion and dissociation of excitons. Theory and simulation on different length scales can help to understand these fundamental processes by linking self-organizing, structural, and electronic properties together.
Hosted by: Mark Hybertsen
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