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Tuesday 13 November 2007, 14:30-15:30
Photophysics of molecular materials for photovoltaics
- 👤 Speaker: Dr. S.C.J. Meskers, Molecular Materials and Nanosystems, Eindhoven University of Technology
- 📅 Date & Time: Tuesday 13 November 2007, 14:30 - 15:30
- 📍 Venue: Small Lecture Theatre, Cavendish Laboratory, Department of Physics
Abstract
In organic photovoltaics, usually combination of two molecular materials is used as active layer. After excitation one of these materials acts as electron donor and the other as electron acceptor. Photons that are aborbed by these layers can be converted very efficiently into charge carriers collected at the electrode at zero bias voltage(efficiency >50 %)Molecular materials generally have a low dielectric constant (relative dielectric constant 3-4) and it is not obvious how the photogenerated electron is separated from the hole against the Coulombic attraction. In this seminar I will discuss spectroscopic studies aimed at clearifying the origin of the high short circuit photocurrent in organic photovolatics.
Series This talk is part of the Optoelectronics Group series.
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