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SUMMARY:Dynamical Monte Carlo Modelling of OLEDs - Prof. Alison Walker\, D
 epartment of Physics\, University of Bath\, UK
DTSTART:20121030T143000Z
DTEND:20121030T153000Z
UID:TALK41084@talks.cam.ac.uk
CONTACT:Dr. Girish Lakhwani
DESCRIPTION:At Bath\, we have developed a model of organic devices that li
 nks morphology to device characteristics. The model\, based on the dynamic
 al Monte Carlo approach pioneered in surface physics\, allows us to includ
 e interaction processes between different species on many different timesc
 ales. In this talk I will show how we have used this approach to model the
  influence of interlayers\, layers added to improve efficiency and lifetim
 e\, on organic light emitting devices\, OLEDs. Our model distinguishes bet
 ween triplet and singlet excitons and allows for the interactions of these
  species (triplet-triplet annihilation\, triplet-singlet annihilation\, tr
 iplet-polaron quenching). I will show our predictions for emission zone pr
 ofiles in a polymer device and discuss how we can gain insight into what d
 etermines changes in OLED efficiency with current and how in the longer te
 rm this approach can be used to address degradation.
LOCATION:Kapitza Building Seminar Room\, Cavendish Laboratory\, Department
  of Physics
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