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SUMMARY:Molecular semiconductors for LEDs and solar cells: designing aroun
 d the Coulomb interaction (SCS and LACUS)
DTSTART:20171120T163000
DTEND:20171120T173000
DTSTAMP:20260930T201207Z
UID:664c8a8b56d83a125d508c5833cffdd96078540ab5cff91e940d24cc
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Richard Friend\nUniversity of Cambridge\nUK\nPi-conjugat
 ed organic molecules and polymers now provide a set of well-performing sem
 iconductors that support devices\, including light-emitting diodes (LEDs) 
 as used in smart-phone displays and lighting\, field-effect transistors (F
 ETs) and photovoltaic diodes (PVs).  These are attractive materials to ma
 nufacture\, particularly for large-area applications where they can be pro
 cessed by direct printing\, so that the cost of materials and processing c
 an be very low.   This practical success is made possible by breakthroug
 hs in the understanding and engineering of the underlying semiconductor sc
 ience.  The physics of organic semiconductors is often controlled by larg
 e electron-hole Coulomb interactions and by large spin exchange energies.
   Management of excited state spin is fundamental for efficient LED and s
 olar cells operation. I will discuss in particular recent progress in the 
 control of emissive spin singlet excited states and non-emissive spin trip
 let excited states.
LOCATION:BCH 2201 https://plan.epfl.ch/?room==BCH%202201
STATUS:CONFIRMED
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