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26 August 2016 Significance of light-soaking effect in proper analysis of degradation dynamics of organic solar cells
Michał Dusza, Wiesław Strek, Filip Granek
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Journal of Photonics for Energy, Vol. 6, Issue 3, 035503 (August 2016). https://doi.org/10.1117/1.JPE.6.035503
Abstract
One of the issues in the organic solar-cell technology that needs attention before mass production is its low long-term stability. These devices need often to be exposed to the light to improve their photovoltaic properties. This effect, known as light soaking, is the cause of challenges related to correct measurements and proper determination of the device lifetime. Lifetime determination and investigation of failure mechanisms of solar-cell devices require reliable measurement approaches. This paper presents the systematic studies on proper analysis of degradation dynamics of organic solar cells (OSCs) taking into account the light-soaking effect. Five groups of organic solar-cell annealed at various conditions (110°C to 170°C and nonannealed) were under investigation for 100 days. Measurement procedure for proper investigation of light-soaking effect is proposed. Solar-cell efficiency improvement, due to light-soaking effect, in range 8% to 27% was observed for as fabricated devices. After 100 days of study, the light soaking-related efficiency improvement increased up to over 100% of initial efficiency. Device lifetimes strongly depend on measurement methods, which were applied. Our results show the importance of taking into account the changes in magnitude of the light-soaking effect in measurements and degradation studies of OSCs.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Michał Dusza, Wiesław Strek, and Filip Granek "Significance of light-soaking effect in proper analysis of degradation dynamics of organic solar cells," Journal of Photonics for Energy 6(3), 035503 (26 August 2016). https://doi.org/10.1117/1.JPE.6.035503
Published: 26 August 2016
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Cited by 7 scholarly publications.
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KEYWORDS
Solar cells
Photovoltaics
Organic photovoltaics
Crystals
Annealing
Measurement devices
Temperature metrology
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