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Initial photo-degra...
Initial photo-degradation of PCDTBT:PC 70 BM solar cells studied under various illumination conditions : Role of the hole transport layer
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- Züfle, Simon (author)
- Fluxim AG, Switzerland; Institute of Computational Physics, ZHAW, Switzerland
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- Hansson, Rickard, 1987- (author)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013)
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- Katz, Eugene A. (author)
- The Ben-Gurion University of the Negev, Israel
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- Moons, Ellen, professor, 1966- (author)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013)
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(creator_code:org_t)
- Elsevier, 2019
- 2019
- English.
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In: Solar Energy. - : Elsevier. - 0038-092X .- 1471-1257. ; 183:1, s. 234-239
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- ncapsulated organic solar cells often show a burn-in behaviour under illumination. This burn-in manifests itself as a rapid performance loss followed by a much slower progression of the degradation. Here we investigate the burn-in for PCDTBT:PC 70 BM solar cells under a wide range of illumination intensities. We find that increasing the sunlight concentration from 1 Sun to up to 100 Suns does not change the degradation behaviour, i.e. the dependence of all principal photovoltaic parameters on the dose of solar exposure (in Sun hours). This suggests that the degradation mechanisms under solar concentration (≤100 Suns) are the same as those observed under 1 Sun. This result makes it possible to use concentrated sunlight for accelerated stability assessment of these devices. We also find that devices with PEDOT:PSS as hole transport material show a rapid drop in open-circuit voltage of around 100 mV during the first Sun hour of light exposure. By replacing PEDOT:PSS with MoO 3 this initial process can be prevented and only the much slower part of the photo-degradation takes place.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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