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5 October 2023 Controlling phase transitions in 2D perovskites
Connor Bischak
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Proceedings Volume PC12650, Physical Chemistry of Semiconductor Materials and Interfaces XXII; PC1265008 (2023) https://doi.org/10.1117/12.2676958
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
Ruddlesden-Popper (2D) perovskites offer exciting possibilities for various applications that leverage their electronic and thermodynamic properties, including solar cells, light-emitting diodes, transistors, thermal energy storage, and barocaloric cooling. While numerous methods exist for controlling their electronic properties, only a few techniques exist for fine-tuning their thermodynamic properties. In this study, we present a novel approach to controlling the phase transition temperature of RP 2D perovskites through the incorporation of alkyl organic cations with varying chain lengths. Using temperature-dependent grazing incidence wide-angle X-ray scattering (GIWAXS) and photoluminescence (PL) spectroscopy, we also demonstrate how the phase transition in the organic layer affects the structure of the inorganic lattice, influencing PL intensity and wavelength. Our findings offer valuable design principles for controlling phase transitions in 2D perovskites, which can enable the development of solid-solid phase change materials and barocaloric cooling applications.
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Connor Bischak "Controlling phase transitions in 2D perovskites", Proc. SPIE PC12650, Physical Chemistry of Semiconductor Materials and Interfaces XXII, PC1265008 (5 October 2023); https://doi.org/10.1117/12.2676958
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KEYWORDS
Perovskite
Electrical properties
Thermodynamics
Photoluminescence
Scattering
Solar cells
Solar energy
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