Carrier motion in as-spun and annealed P3HT:PCBM blends revealed by ultrafast optical electric field probing and Monte Carlo simulations
(2014) In Physical Chemistry Chemical Physics 16(6). p.2686-2692- Abstract
- Charge transport dynamics in solar cell devices based on as-spun and annealed P3HT:PCBM films are compared using ultrafast time-resolved optical probing of the electric field by means of field-induced second harmonic generation. The results show that charge carriers drift about twice as far during the first 3 ns after photogeneration in a device where the active layer has been thermally annealed. The carrier dynamics were modelled using Monte-Carlo simulations and good agreement between experimental and simulated drift dynamics was obtained using identical model parameters for both cells, but with different average PCBM and polymer domain sizes. The calculations suggest that small domain sizes in as-spun samples limit the carrier... (More)
- Charge transport dynamics in solar cell devices based on as-spun and annealed P3HT:PCBM films are compared using ultrafast time-resolved optical probing of the electric field by means of field-induced second harmonic generation. The results show that charge carriers drift about twice as far during the first 3 ns after photogeneration in a device where the active layer has been thermally annealed. The carrier dynamics were modelled using Monte-Carlo simulations and good agreement between experimental and simulated drift dynamics was obtained using identical model parameters for both cells, but with different average PCBM and polymer domain sizes. The calculations suggest that small domain sizes in as-spun samples limit the carrier separation distance disabling their escape from geminate recombination. (Less)
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https://lup.lub.lu.se/record/4319151
- author
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Chemistry Chemical Physics
- volume
- 16
- issue
- 6
- pages
- 2686 - 2692
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000329926700050
- scopus:84892621540
- pmid:24384829
- ISSN
- 1463-9084
- DOI
- 10.1039/c3cp54605e
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 1746db98-6638-4e7d-9526-339694874792 (old id 4319151)
- date added to LUP
- 2016-04-01 13:33:48
- date last changed
- 2022-03-21 19:13:59
@article{1746db98-6638-4e7d-9526-339694874792, abstract = {{Charge transport dynamics in solar cell devices based on as-spun and annealed P3HT:PCBM films are compared using ultrafast time-resolved optical probing of the electric field by means of field-induced second harmonic generation. The results show that charge carriers drift about twice as far during the first 3 ns after photogeneration in a device where the active layer has been thermally annealed. The carrier dynamics were modelled using Monte-Carlo simulations and good agreement between experimental and simulated drift dynamics was obtained using identical model parameters for both cells, but with different average PCBM and polymer domain sizes. The calculations suggest that small domain sizes in as-spun samples limit the carrier separation distance disabling their escape from geminate recombination.}}, author = {{Abramavicius, Vytautas and Vithanage, Dimali and Devizis, Andrius and Infahsaeng, Yingyot and Bruno, Annalisa and Foster, Samuel and Keivanidis, Panagiotis E. and Abramavicius, Darius and Nelson, Jenny and Yartsev, Arkady and Sundström, Villy and Gulbinas, Vidmantas}}, issn = {{1463-9084}}, language = {{eng}}, number = {{6}}, pages = {{2686--2692}}, publisher = {{Royal Society of Chemistry}}, series = {{Physical Chemistry Chemical Physics}}, title = {{Carrier motion in as-spun and annealed P3HT:PCBM blends revealed by ultrafast optical electric field probing and Monte Carlo simulations}}, url = {{http://dx.doi.org/10.1039/c3cp54605e}}, doi = {{10.1039/c3cp54605e}}, volume = {{16}}, year = {{2014}}, }