The Library
Modulating the exciton dissociation rate by up to more than two orders of magnitude by controlling the alignment of LUMO + 1 in organic photovoltaics
Tools
Ma, Haibo and Troisi, Alessandro (2014) Modulating the exciton dissociation rate by up to more than two orders of magnitude by controlling the alignment of LUMO + 1 in organic photovoltaics. The Journal of Physical Chemistry C, 118 (47). pp. 27272-27280. doi:10.1021/jp5098102 ISSN 1932-7447.
PDF
WRAP_0483109-ch-141116-2nd_ct-jpc_at25sept.pdf - Accepted Version - Requires a PDF viewer. Download (2026Kb) |
Official URL: http://dx.doi.org/10.1021/jp5098102
Abstract
Efficient organic solar cells require a high yield of exciton dissociation. Herein we investigate the possibility of having more than one charge-transfer (CT) state below the first optically bright Frenkel exciton state (FE) for common molecular donor (D)/acceptor (A) pairs and the role of the second-lowest CT state (CT2) in the exciton dissociation process. This situation, previously explored only for fullerene acceptors, is shown to be rather common for other D/A pairs. By considering a phenomenological model of a large aggregate, we reveal that the position of CT2 can remarkably modulate the exciton dissociation rate by up to more than two orders of magnitude. Thus, controlling the alignment of CT2 is suggested as a promising rule for designing new D/A heterojunctions.
Item Type: | Journal Article | ||||||
---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||
Library of Congress Subject Headings (LCSH): | Solar cells, Photovoltaic cells | ||||||
Journal or Publication Title: | The Journal of Physical Chemistry C | ||||||
Publisher: | American Chemical Society | ||||||
ISSN: | 1932-7447 | ||||||
Official Date: | 28 October 2014 | ||||||
Dates: |
|
||||||
Volume: | 118 | ||||||
Number: | 47 | ||||||
Page Range: | pp. 27272-27280 | ||||||
DOI: | 10.1021/jp5098102 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 15 November 2016 | ||||||
Date of first compliant Open Access: | 16 November 2016 | ||||||
Funder: | Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), European Research Council (ERC) | ||||||
Grant number: | 21373109 (NSFC), 615834 (ERC) |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year