Abstract
We present a side-by-side comparison of the stability of three different types of benchmark solution-processed organic solar cells (OSCs), subject to thermal cycling stress conditions. We study the in situ performance during 5 complete thermal cycles between −100 and 80 °C and find that all the device types investigated exhibit superior stability, albeit with a distinct temperature dependence of device efficiency. After applying a much harsher condition of 50 thermal cycles, we further affirm the robustness of the OSC against thermal cycling stress. Our results suggest that OSCs could be a promising candidate for applications with large variations and rapid change in the operating temperature such as outer space applications. Also, a substantial difference in the efficiency drops from high to low temperature for different systems is observed. It suggests that maintaining optimum performance with minimal variations with operating temperature is a key challenge to be addressed for such photovoltaic applications.
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ACKNOWLEDGMENTS
The authors would like to acknowledge the funding support from the Welsh Assembly Government funded Sêr Cymru Solar Project, the European Commission’s CHEETAH Project (FP7-Energy-2013—Grant No. 609788) and EPSRC Grant Nos. EP/M025020/1 and EP/K030671/1. ZL thanks the Welsh Assembly Government Sêr Cymru II fellowship scheme for funding.
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Lee, H.K.H., Durrant, J.R., Li, Z. et al. Stability study of thermal cycling on organic solar cells. Journal of Materials Research 33, 1902–1908 (2018). https://doi.org/10.1557/jmr.2018.167
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DOI: https://doi.org/10.1557/jmr.2018.167