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Light-induced degradation of fullerenes in organic solar cells: a case study on TQ1:PC71BM
Nanjing Tech University, China; Linkoping University .
Linköping University .
Nanjing Tech University, China.
Linkoping University.
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2018 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 6, no 25, p. 11884-11889Article in journal (Refereed) Published
Abstract [en]

The stability of organic solar cells (OSCs) is critical for practical applications of this emerging technology. Unfortunately, in spite of intensive investigations, the degradation mechanisms in OSCs have not been clearly understood yet. In this report, we employ a range of spectroscopic and transport measurements, coupled with drift-diffusion modelling, to investigate the light-induced degradation mechanisms of fullerene-based OSCs. We find that trap states formed in the fullerene phase under illumination play a critical role in the degradation of the open-circuit voltage (V-OC) in OSCs. Our results indicate that the degradation is intrinsic to the fullerenes in OSCs and that alternative acceptor materials are desired for the development of stable OSCs.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2018. Vol. 6, no 25, p. 11884-11889
Keywords [en]
highly efficient, oxygen, films, interlayer, photodegradation
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Physics
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URN: urn:nbn:se:kau:diva-68925DOI: 10.1039/c8ta03112fISI: 000436516700031OAI: oai:DiVA.org:kau-68925DiVA, id: diva2:1242904
Available from: 2018-08-29 Created: 2018-08-29 Last updated: 2018-08-29

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Moons, Ellen

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