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Utilizing Energy Tr...
Utilizing Energy Transfer in Binary and Ternary Bulk Heterojunction Organic Solar Cells
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- Feron, K. (author)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO),University of Newcastle
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- Cave, J. M. (author)
- University of Bath
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- Thameel, M. N. (author)
- University of Newcastle,University of Anbar
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- O'Sullivan, C. (author)
- University of Newcastle
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- Kroon, Renee, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Andersson, Mats, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Zhou, X. J. (author)
- University of Newcastle
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- Fell, C. J. (author)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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- Belcher, W. J. (author)
- University of Newcastle
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- Walker, A. B. (author)
- University of Bath
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- Dastoor, P. (author)
- University of Newcastle
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(creator_code:org_t)
- 2016-08-04
- 2016
- English.
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In: ACS Applied Materials & Interfaces. - : American Chemical Society (ACS). - 1944-8252 .- 1944-8244. ; 8:32, s. 20928-20937
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Abstract
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- Energy transfer has been identified as an important process in ternary organic solar cells. Here, we develop kinetic Monte Carlo (KMC) models to assess the impact of energy transfer in ternary and binary bulk heterojunction systems. We used fluorescence and absorption spectroscopy to determine the energy disorder and Forster radii for poly(3-hexylthiophene-2,5-diyl), [6,6]-phenyl-C61-butyric acid methyl ester, 4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl]squaraine (DIBSq), and poly(2,5-thiophene-alt-4,9-bis(2-hexyldecyl)-4,9-dihydrodithieno[3,2-c:3 ',2'-h][1,5]naphthyridine-5,10-dione). Heterogeneous energy transfer is found to be crucial in the exciton dissociation process of both binary and ternary organic semiconductor systems. Circumstances favoring energy transfer across interfaces allow relaxation of the electronic energy level requirements, meaning that a cascade structure is not required for efficient ternary organic solar cells. We explain how energy transfer can be exploited to eliminate additional energy losses in ternary bulk heterojunction solar cells, thus increasing their open-circuit voltage without loss in short-circuit current. In particular, we show that it is important that the DIBSq is located at the electron donor acceptor interface; otherwise charge carriers will be trapped in the DIBSq domain or excitons in the DIBSq domains will not be able to dissociate efficiently at an interface. KMC modeling shows that only small amounts of DIBSq (
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- binary photovoltaic
- ternary organic solar cells
- Monte Carlo
- exciton dissociation
- energy level optimization
- energy transfer
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Feron, K.
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Cave, J. M.
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Thameel, M. N.
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O'Sullivan, C.
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Kroon, Renee, 19 ...
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Andersson, Mats, ...
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show more...
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Zhou, X. J.
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Fell, C. J.
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Belcher, W. J.
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Walker, A. B.
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Dastoor, P.
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
- Articles in the publication
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ACS Applied Mate ...
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Chalmers University of Technology