Exciton transfer in semiconducting carbon nanotube photovoltaics studied with 2D White-Light Spectroscopy
Event details
Date | 05.10.2017 |
Hour | 16:30 › 17:30 |
Speaker |
Prof. Martin Zanni
University of Wisconsin - Madison USA |
Location | |
Category | Conferences - Seminars |
It has recently become possible to purify carbon nanotubes into semiconducting thin films, making it possible to use them in photovoltaic, transistor, and photodetector applications. Individual carbon nanotubes are well known to have exceptional transport and optical properties, but their properties 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.
Practical information
- General public
- Free
Organizer
Contact
- Annick Gaudin Delmonaco