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SUMMARY:Exciton transfer in semiconducting carbon nanotube photovoltaics s
 tudied with 2D White-Light Spectroscopy
DTSTART:20171005T163000
DTEND:20171005T173000
DTSTAMP:20260501T035255Z
UID:95ac6c93c3d6508054e0d034c5ec7edd7594366bd59622e139de4960
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Martin Zanni\n\nUniversity of Wisconsin - Madison\nUSA\n
 It has recently become possible to purify carbon nanotubes into semiconduc
 ting thin films\, making it possible to use them in photovoltaic\, transis
 tor\, and photodetector applications. Individual carbon nanotubes are well
  known to have exceptional transport and optical properties\, but their pr
 operties in bulk materials are unknown. They are a new mesoscale material.
  In this talk\, I will report a method that we have developed\, called two
 -dimensional white light spectroscopy (2D WL) and its application to study
  energy transfer in thin films and photovoltaics made from semiconducting 
 carbon nanotubes. We observe exciton hopping\, exciton dissociation\, and 
 anti-correlated energy levels\, and the implications of these measurements
  on the development of carbon nanotube photovoltaics.
LOCATION:BCH 2201 https://plan.epfl.ch/?room==BCH%202201
STATUS:CONFIRMED
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