Sökning: onr:"swepub:oai:DiVA.org:liu-123824" >
Photo-generated car...
Photo-generated carriers lose energy during extraction from polymer-fullerene solar cells
-
- Melianas, Armantas (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
-
- Etzold, Fabian (författare)
- Max Planck Institute Polymer Research, Germany
-
- Savenije, Tom J. (författare)
- Delft University of Technology, Netherlands
-
visa fler...
-
- Laquai, Frederic (författare)
- Max Planck Institute Polymer Research, Germany; King Abdullah University of Science and Technology, Saudi Arabia
-
- Inganäs, Olle (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
-
- Kemerink, Martijn (författare)
- Linköpings universitet,Komplexa material och system,Tekniska fakulteten,Eindhoven University of Technology, Netherlands
-
visa färre...
-
(creator_code:org_t)
- 2015-11-05
- 2015
- Engelska.
-
Ingår i: Nature Communications. - : Nature Publishing Group. - 2041-1723. ; 6:8778
- Relaterad länk:
-
https://liu.diva-por... (primary) (Raw object)
-
visa fler...
-
https://www.nature.c...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In photovoltaic devices, the photo-generated charge carriers are typically assumed to be in thermal equilibrium with the lattice. In conventional materials, this assumption is experimentally justified as carrier thermalization completes before any significant carrier transport has occurred. Here, we demonstrate by unifying time-resolved optical and electrical experiments and Monte Carlo simulations over an exceptionally wide dynamic range that in the case of organic photovoltaic devices, this assumption is invalid. As the photo-generated carriers are transported to the electrodes, a substantial amount of their energy is lost by continuous thermalization in the disorder broadened density of states. Since thermalization occurs downward in energy, carrier motion is boosted by this process, leading to a time-dependent carrier mobility as confirmed by direct experiments. We identify the time and distance scales relevant for carrier extraction and show that the photo-generated carriers are extracted from the operating device before reaching thermal equilibrium.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas