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SUMMARY:Formation of solution-processed organic semiconductor thin films f
 or electronic and photovoltaic applications - Prof. Aram Amassian\, Organi
 c Electronics and Photovoltaics (OEPV) Lab\, Materials Science and Enginee
 ring Program\, Physical Sciences and Engineering Division\, King Abdullah 
 University of Science and Technology (KAUST)
DTSTART:20121030T110000Z
DTEND:20121030T120000Z
UID:TALK41330@talks.cam.ac.uk
CONTACT:Dr. Girish Lakhwani
DESCRIPTION:As solution-processing of organic semiconductors emerges as a 
 viable manufacturing process\, supported by recent reports of high perform
 ance organic thin film transistors (OTFTs) and solar cells\, there is incr
 easing urgency to speed up the development of scalable\, robust and reprod
 ucible manufacturing processes. Complementing traditional trial-and-error 
 methods with rigorous in situ investigations and predictive computational 
 modeling (farther down the road) should help to achieve rapid optimization
  and performance improvements on industrially relevant scalable processes.
  Fundamental understanding of the underlying mechanisms of laboratory-base
 d solution processes\, such as drop-\, spin- and blade-casting is therefor
 e a crucial and informative first step\, since these processes have yielde
 d most of the record-breaking device performances reported to date in the 
 organic electronics and photovoltaics. This talk will present a status upd
 ate of my group’s multidisciplinary efforts at KAUST and through strateg
 ic collaborations to understand\, control\, and ultimately model these pro
 cesses. I will begin by discussing drop- and spin-casting of small-molecul
 e thin films and contrast the nucleation and growth processes within these
  processes to a significantly different behavior observed in blade-cast fi
 lms in the context of OTFT applications. I will also share recent findings
  related to the formation of polymer-molecule blends via spin-casting\, an
 d highlight preliminary results suggesting that experimentally validated c
 omputer-assisted process development and optimization may not be so far of
 f into our future.
LOCATION:Kapitza Building Seminar Room\, Cavendish Laboratory\, Department
  of Physics
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