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DTSTART:20180115T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/788486-organic-semico
 nductors-photochromic-compounds-come-into-the-limelight-emanuele-orgiu-inr
 s
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Organic Semiconductors & Photochromic Compounds Come Into The Limel
 ight - Emanuele Orgiu (INRS)
DESCRIPTION:Organic Semiconductors & Photochromic Compounds Come Into The L
 imelightEmanuele OrgiuCentre Énergie Matériaux TélécommunicationsInsti
 tut national de la recherche scientifique (INRS)
\nAbstract: 
\nSince the
  late '70s\, organic semiconductors have been garnering scientific and tec
 hnological interest as key active materials for low-cost\, flexible and la
 rge-area electronics. To date\, outstanding advances on both material and 
 processing side are paving the way towards a mature technology which will 
 ultimately meet the many expectations and efforts built up over the years.
  Unfortunately\, Organic Electronics cannot compete by its own or compleme
 nt the silicon-based electronics in integrating multiple functions in a sm
 all area unless novel solutions are brought into play.
\nWithin this semin
 ar\, I will summarize some recent progress in combining small molecules\, 
 fullerene derivatives as well as polymer semiconductors with photochromic 
 molecules as a most promising approach to fill this scientific and technol
 ogical gap by developing multifunctional optoelectronic devices such as me
 mories and inverters.
\nPhotochromic molecules are small organic molecules
  capable of undergoing reversible photo-isomerization between two (meta)st
 able states which are associated with markedly different properties such a
 s change in dipole moment\, HOMO-LUMO gap\, redox potential\, tunneling ba
 rrier to mention some. The structurally controlled incorporation of photoc
 hromic molecules can be done at various interfaces of a device\, including
  the electrode/semiconductor or dielectric/semiconductor interface or even
  as a binary mixture in the active layer\, in order to impart a light resp
 onsive nature to the device by modulating via light stimuli fundamental ph
 ysico-chemical properties such as charge injection and transport in the de
 vice.
\nThis seminar will focus on some of my more recent attempts [1-3] t
 o bridge the organic semiconductors and the photochromic molecules worlds 
 while outlining some future goals that are still to be pursued to develop 
 highperforming multi-gated devices.
\nReferences
\n[1] Orgiu\, E. et al. 
 Nat Chem 2012\, 4\, 675.
\n[2] T. Leydecker\, M. Herder\, E. Pavlica\, G.
  Bratina\, S. Hecht\, E. Orgiu*\, P. Samorì\, Nat Nanotech\, 2016\, 11\, 
 769.
\n[3] M. El Gemayel\, K. Börjesson\, M. Herder\, D. T. Duong\, J. A
 . Hutchison\, C. Ruzié\, G. Schweicher\, A. Salleo\, Y. Geerts\, S. Hecht
  \, E. Orgiu*\, P. Samorì\, Nat Commun\, 2015\, 6\, 6330.
\nBio: Emanuele
  Orgiu is Associate Professor at INRS-EMT (Québec\, CA) and Assistant Pro
 fessor at University of Strasbourg (ISIS\, FR). He holds a Ph.D. in Physic
 s of organic devices (2008\, University of Cagliari) and works in the fiel
 ds of materials science and physics\,with a focus on interfaces and transp
 ort in both 2D-material and organic semiconductor-based (nano)devices.He i
 s member of the Young Academy of Europe(2016)\, was a Fulbright Fellowship
  (2007)\, received the MIT-Under35 France Award(2013).
\nTo know more abou
 t Prof. Orgiu research activities\, you can consult his web page.
\n Cett
 e conférence est présentée par le RQMP Versant Nord du Département 
 de physique de l'Université de Montréal et de Génie physique de la P
 olytechnique.
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