Driving Force and Dielectric Constants: What Quantum Dot Acceptors Can Teach Us About Organic Solar Cell Performance

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• Prof. David Ginger, University of Washington, USA
• Thursday 27 September 2012, 14:30-15:30
• Kapitza Building Seminar Room, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact Dr. Girish Lakhwani.

Low bandgap quantum dots are interesting materials for many applications in solar energy harvesting. Aside from carrier multiplication schemes, quantum dots offer broadband absorption, precisely tailored band edge positions, and higher dielectric constants than traditional organic acceptors. In addition to exploring the operating mechanisms of low bandgap quantum dot / polymer bulk heterojunction blends, we compare quantum dot acceptors with conventional fullerene acceptors to better understand the relationship between free carrier yield, local dielectric constants, and the driving force for charge transfer at the donor/acceptor interface.

This talk is part of the Optoelectronics Group series.

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