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PRODID:https://murmitoyen.com/events/vanille/udem/
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UID:69e085d37282c
DTSTAMP:20260416T024643
DTSTART:20131118T113000
SEQUENCE:0
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DTEND:20131118T123000
URL:https://murmitoyen.com/events/vanille/udem/detail/283474
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Ultrafast interface dynamics – Guglielmo Lanzani\, Center for Nan
 o Science and Technology of IIT & Politecnico di Milano\, Italy
DESCRIPTION:Guglielmo Lanzani\, Center for Nano Science and Technology of I
 IT & Politecnico di Milano\, ItalyPump-probe spectroscopy is applied to se
 veral donor acceptor interfaces that are constituents of third generation 
 solar cells. Following photoexcitation of the donor states or hybrid inter
 face states this technique allows to track down the excitation path to a c
 harge separated state or recombination. Parameters ruling interface dynami
 cs\, such as morphology\, energy alignment or excess energy\, are studied.
  In the talk evidence for hot state dissociation\, occurring before vibrat
 ional relaxation\, will be brought for the case of low band gap polymer/fu
 llerene interface. Energy transfer in competition with charge transfer wil
 l be highlighted in standard P3HT/PCBM bulk heterojunction. Finally dynami
 cs in hybrid systems\, such as oxide/polymer will also be discussed.  Si
 te web du groupe de  Prof. Lanzani'sCette conférence est présentée par 
 le RQMP Versant Nord du Département de physique de l'Université de Mont
 réal et le Département de génie physique de Polytechnique Montréal.
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