Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP27)
Publication date: 22nd October 2026
Thermal annealing of the active layer is a critical step during the fabrication of perovskite solar cells. The device performance is closely related to the quality of the perovskite film, which in turn is influenced by parameters like the temperature and time of the thermal annealing step.
To understand how the formation of the perovskite crystalline layer affects the device performance, simultaneous operando grazing-incidence wide-angle X-ray scattering and current-voltage sweeps were performed during the thermal annealing process. Two different perovskite compositions were compared, MAPbI3 and Cs0.05(FA0.83MA0.17)0.95Pb(I0.83Br0.17)3. Additionally, film morphology was analyzed by scanning electron microscopy at different stages of the annealing process. This study tracks how changes in crystallinity and morphology evolution are correlated with changes in the solar cell performance and highlights the importance of controlled environmental conditions during the fabrication process.
Quezada Borja J.D. & Kelly T.L; Evolution of Photovoltaic Performance in Perovskite Solar Cells During Thermal Annealing: An Operando Grazing-Incidence Wide-Angle X‑ray Scattering Study. ACS Appl. Energy Mater. 2025; 8 (24): 18058–18066. https://doi.org/10.1021/acsaem.5c03000
The Natural Science and Engineering Research Council of Canada (NSERC, RGPIN-2022-03138) is acknowledged for financial support. Part or all of the research described in this paper was performed at the Canadian Light Source, a national research facility of the University of Saskatchewan, which is supported by the Canada Foundation for Innovation (CFI), the Natural Sciences and Engineering Research Council (NSERC), the Canadian Institutes of Health Research (CIHR), the Government of Saskatchewan, and the University of Saskatchewan. The Saskatchewan Structural Sciences Centre (SSSC) is acknowledged for providing facilities to conduct this research. Canada Foundation for Innovation, NSERC, and the University of Saskatchewan support research at the SSSC.
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