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SUMMARY:Driving Force and Dielectric Constants: What Quantum Dot Acceptors
  Can Teach Us About Organic Solar Cell Performance - Prof. David Ginger\, 
 University of Washington\, USA
DTSTART:20120927T133000Z
DTEND:20120927T143000Z
UID:TALK40132@talks.cam.ac.uk
CONTACT:Dr. Girish Lakhwani
DESCRIPTION:Low bandgap quantum dots are interesting materials for many ap
 plications in solar energy harvesting. Aside from carrier multiplication s
 chemes\, 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 band
 gap quantum dot / polymer bulk heterojunction blends\, we compare quantum 
 dot acceptors with conventional fullerene acceptors to better understand t
 he relationship between free carrier yield\, local dielectric constants\, 
 and the driving force for charge transfer at the donor/acceptor interface.
LOCATION:Kapitza Building Seminar Room\, Cavendish Laboratory\, Department
  of Physics
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