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DTSTAMP:20260411T053010
DTSTART:20181121T110000
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URL:https://murmitoyen.com/events/vanille/udem/detail/838375-conference-de-
 chimie-avec-le-professeur-ingo-salzmann-de-lruniversite-concordia
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Conférence de chimie avec le professeur Ingo Salzmann de l’Unive
 rsité Concordia
DESCRIPTION:Conférence de chimie avec le professeur Ingo Salzmann de l
 ’Université Concordia  
\n 
\nTitre: '' Structure and energetics of 
 doped organic semiconductors  ''
\n 
\nEndroit : Pavillon Roger-Gaudry\,
  salle S-142
\n 
\nHeure : 11:00 AM
\n 
\nHôte : Professeur William Ske
 ne
\n 
\nRésumé :
\nDoping organic semiconductors (OSCs) for enabling 
 new functionality and improving opto-electronic device performance is done
  by adding strong molecular acceptors as p-dopants to the OSC host. I will
  discuss the broad range of phenomena observed upon molecularly p-doping c
 onjugated polymers (CPs) and molecules (COMs)\, where two different compet
 ing scenarios emerged: (i) integer-charge transfer between OSC and dopant 
 forming ion pairs (IPAs)\, and (ii)\, partial charge transfer with the eme
 rgence of OSC/dopant ground-state charge transfer complexes (CPXs). As pro
 totypical representatives for these two scenarios\, IPA formation in F4TCN
 Q-doped poly(3-hexylthiophene) (P3HT) is juxtaposed to CPX formation found
  for its parent oligomer\, and the respective doping-induced modification 
 of the density of states (DOS) is generally discussed and experimentally a
 ssessed by photoelectron spectroscopy. I will further focus on the determi
 nation of the thin-film structure of COMs/CPs\, its modification through d
 oping and its impact on the degree of charge transfer between OSC and dopa
 nt. Correlating Grazing-incidence X-ray diffraction with infrared spectros
 copy for thermally annealed films finally provides insight into the comple
 x growth behavior of p-doped P3HT.
\n 
\nInformations supplémentaires
\n
  
\nAnnonce PDF de la conférence
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