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Turren Cruz, Silver Hamill, 2024, "Microwave-Mediated Synthesis of Lead-Free Cesium Titanium Bromide Double Perovskite: A Sustainable Approach", https://doi.org/10.18150/PH6C7O, RepOD, V1
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Theoretical studies have identified cesium titanium bromide (Cs2TiBr6), a vacancy-ordered double perovskite, as a promising lead-free and earth-abundant candidate to replace Pb-based perovskites in photovoltaics. Our research is focused on overcoming the limitations associated with the current Cs2TiBr6 syntheses, which often involve high-vacuum and high-temperature evaporation techniques, high-energy milling, or intricate multistep solution processes conducted under an inert atmosphere, constraints that hinder industrial scalability. This study presents a straightforward, low-energy, and scalable solution procedure using microwave radiation to induce the formation of highly crystalline Cs2TiBr6 in a polar solvent. This methodology, where the choice of the solvent plays a crucial role, not only reduces the energy costs associated with perovskite production but also imparts exceptional stability to the resulting solid, in comparison with previous reports. This is a critical prerequisite for any technological advancement. The low-defective material demonstrates unprecedented structural stability under various stimuli such as moisture, oxygen, elevated temperatures (over 130 °C), and continuous exposure to white light illumination. In summary, our study represents an important step forward in the efficient and cost-effective synthesis of Cs2TiBr6, offering a compelling solution for the development of eco-friendly, earth-abundant Pb-free perovskite materials.
Granular materials,Materials, Oxygen, Perovskites, Stability
Microwave-Mediated Synthesis of Lead-Free Cesium Titanium Bromide Double Perovskite: A Sustainable Approach Emmanuel Reyes-Francis, Carlos Echeverría-Arrondo, Diego Esparza, Tzarara López-Luke, Tatiana Soto-Montero, Monica Morales-Masis, Silver-Hamill Turren-Cruz, Iván Mora-Seró, and Beatriz Julián-López Chemistry of Materials 2024 36 (3), 1728-1736 DOI: 10.1021/acs.chemmater.3c03108 https://doi.org/10.1021/acs.chemmater.3c03108 doi:
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