Sökning: WFRF:(Melianas Armantas)
> (2014) >
Dispersion-Dominate...
Dispersion-Dominated Photocurrent in Polymer:Fullerene Solar Cells
-
- Melianas, Armantas (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan,Center of Organic Electronics (COE)
-
- Pranculis, Vytenis (författare)
- Center for Physical Sciences and Technology, Lithuania
-
- Devižis, Andrius (författare)
- Center for Physical Sciences and Technology, Lithuania
-
visa fler...
-
- Gulbinas, Vidmantas (författare)
- Center for Physical Sciences and Technology, Lithuania
-
- Inganäs, Olle (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
-
- Kemerink, Martijn (författare)
- Linköpings universitet,Komplexa material och system,Tekniska högskolan,Department of Applied Physics, Eindhoven University of Technology, MB, Eindhoven, The Netherlands
-
visa färre...
-
(creator_code:org_t)
- 2014-04-22
- 2014
- Engelska.
-
Ingår i: Advanced Functional Materials. - Weinheim, Germany : Wiley-VCH Verlagsgesellschaft. - 1616-301X .- 1616-3028. ; 24:28, s. 4507-4514
- Relaterad länk:
-
https://pure.tue.nl/...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Organic bulk heterojunction solar cells are often regarded as near-equilibrium devices, whose kinetics are set by well-defined charge carrier mobilities, and relaxation in the density of states is commonly ignored or included purely phenomenologically. Here, the motion of photocreated charges is studied experimentally with picosecond time resolution by a combination of time-resolved optical probing of electric field and photocurrent measurements, and the data are used to define parameters for kinetic Monte Carlo modelling. The results show that charge carrier motion in a prototypical polymer:fullerene solar cell under operational conditions is orders of magnitude faster than would be expected on the basis of corresponding near-equilibrium mobilities, and is extremely dispersive. There is no unique mobility. The distribution of extraction times of photocreated charges in operating organic solar cells can be experimentally determined from the charge collection transients measured under pulsed excitation. Finally, a remarkable distribution of the photocurrent over energy is found, in which the most relaxed charge carriers in fact counteract the net photocurrent.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- solar cell; organic solar cell; dispersion; photocurrent; charge carrier relaxation; Monte Carlo simulations
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas