Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.416
Publication date: 16th December 2024
Thanks to their high absorption coefficient and ideal band-gap [1], lead halide perovskite materials are strong candidates for the next generation of solar cells, achieving certified power conversion efficiencies of over 26%. However, the development of perovskite-based solar cells is impeded by obstacles such as degradation of the perovskite layer by light, oxygen, and moisture. Addressing these challenges while advancing sustainability is critical for their widespread adoption.
Photoluminescence (PL) is a valuable tool for studying photoexcited carrier processes in solar cells. However, measuring the steady-state and time-resolved PL of perovskite thin films reveals the complex and sometimes surprising behaviors of these materials [2–4]. Here, we discuss the use of PL studies to understand the stability and performance of perovskite materials, particularly in evaluating alterations to manufacture and materials to improve sustainability. This includes the use of sustainable solvent systems and material substitutions, such as carbon electrodes as alternatives to gold. These studies are complemented by XRD and SEM analyses to investigate the effects of material and process changes on morphology, uniformity, and photovoltaic device performance.
Here, we discuss the work of the Applied Photochemistry Group at the SPECIFIC Innovation and Knowledge Centre, Swansea University, towards advancing the understanding of photostability and photochemistry of perovskite solar cells. By addressing sustainability challenges, particularly through solvent and material innovations, this research supports the transition from lab-scale to production-scale manufacture of environmentally responsible perovskite PV.
This work was made possible by support from UKRI and the EU Horizon Europe Framework Programme (101122277), the Engineering and Physical Science Research Council (EP/S001336/1) and through the funding of the SPECIFIC Innovation and Knowledge Centre by EPSRC (EP/N020863/1) and the Welsh Government (CRISP22-301). Work presented has also been funded with UK aid from the UK government via the Transforming Energy Access platform.
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