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SUMMARY:Organic Semiconductor-polymer Dielectric Nanocomposites: Influence
  of the Guest-host Interactions on OFET Characteristics - Professor Stephe
 n Yeates\, School of Chemistry\, The University of Manchester
DTSTART:20090526T133000Z
DTEND:20090526T143000Z
UID:TALK18134@talks.cam.ac.uk
CONTACT:Dr. Z Chen
DESCRIPTION:Recent developments on solution blends of organic semiconducto
 rs in organic field effect transistor (OFETs) and sensors will be presente
 d. The advantages of such an approach are seen as improved formulation lat
 itude for printing\, cost effectiveness and greater control over morpholog
 y of the organic semiconductor active layer. By consideration of the inter
 action of the active organic semiconductor and the second polymer during t
 he film formation process\, whether it is itself a semiconductor or an ins
 ulator\, it is possible to generate a range of morphologies. When the acti
 ve semiconductor is vertically stratified to the active interface [1\,2] p
 ercolation thresholds at < 10 wt-% with respect to filed effect mobility a
 re observed whereas with less structured morphologies percolation threshol
 ds around 50 wt-% are obtained. 
LOCATION:Kapitza Building Seminar Room\, Cavendish Laboratory\, Department
  of Physics
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