Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.485
Publication date: 16th December 2024
Bismuth-based semiconductors, including the double perovskite Cs₂AgBiBr₆ but also perovskite-inspired materials such as bismuth oxyhalides, show great promise for sustainable light-energy conversion due to their low toxicity, abundance, and tunable electronic properties. This presentation will explore strategies to enhance the efficiency, stability, and scalability of these materials in photoelectrocatalytic and photovoltaic applications. Methods like automated film production, surface modifications, and heterojunction formation have been employed to improve the performance of BiOI and BiOBr in water splitting and hydrogen evolution reactions. A continuous automated film production method for BiOI photoelectrodes was introduced, significantly improving the reproducibility and efficiency of large-scale production. Surface modifications and heterojunction formation have been explored to optimize PEC performance, with enhanced water oxidation and hydrogen evolution reactions observed. Additionally, the lead-free double perovskite Cs₂AgBiBr₆ was optimized for use in solar cells with improved efficiency through interface engineering and low-cost carbon-based electrodes. These advancements position bismuth-based semiconductors as viable, eco-friendly alternatives for energy conversion technologies.
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