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DTSTAMP:20260416T043900
DTSTART:20130910T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/282980
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Enabling the Printed Plastic Electronics and Photovoltaics Future 
 – Aram Amassia\, KAUST
DESCRIPTION:Aram Amassian\, Assistant Professor of Materials Science and E
 ngineering\, Career Development SABIC Chair\, Solar Photovoltaics and Eng
 ineering Research Center\, Physical Sciences and Engineering Division\, Ki
 ng Abdullah University of Science and Technology (KAUST\, Thuwal 23955-69
 00\, Saudi ArabiaThe efficiency of organic semiconductors as light harvest
 ing materials in plastic solar cells or charge carrying materials in plas
 tic electronics depends greatly upon the molecular details\, including the
  packing structure\, the nanoscale morphology and the energetic landscape
  at interfaces. As such the manufacturing of solar cells and electronic d
 evices via high throughput printing and coating techniques will require a
 n extraordinary level of control of all aspects of thin film formation\, b
 ar none\, in order to achieve efficient modules and fast electronics. On 
 the solar cell front\, spin-coating is responsible for all record-breakin
 g solution-processed organic solar cells reported thus far\, but it is bot
 h extremely wasteful and incompatible with roll-to-roll manufacturing. On
  the electronics front\, drop-casting has traditionally been the lab-scal
 e method of choice\, but it is plagued by non-uniformity problems.I will p
 resent\, first\, our current understanding of the solution-to-solid phase 
 transformation process responsible for semiconductor thin film formation 
 in benchmark solution-processing techniques\, such as drop-casting\, blad
 e-coating and spin-coating. This has been enabled by significant effort ov
 er the past 4 years in the development of new in situ metrology strategie
 s. In the case of plastic electronics\, the use of the blade-coating proc
 ess is shown to yield performance far superior to other ones by virtue of
  different nucleation and growth behaviors of small-molecules which can t
 rump classical nucleation theory in some instances and promise to enable 
 high performance large-area electronics. This benefit is not fully observ
 ed in case of polymer systems\, requiring further effort on our behalf to 
 understand the performance gap achieved by different solution processes.S
 ite web du groupe de  Prof. Amassian'sCette conférence est présentée pa
 r le RQMP Versant Nord du Département de physique de l'Université de Mo
 ntréal et le Département de génie physique de Polytechnique Montréal.
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