Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.426
Publication date: 16th December 2024
Halide perovskites are exciting materials for next-generation optoelectronic devices including solar cells, LEDs and X-ray detectors and they show intriguing photophysical behaviour. Here, I will outline our group's recent results on the photophysics of perovskites on different length scales. This work includes nanoscale quantum behaviour at low temperature in bulk thin films, recombination seen deep within, and at interfaces of, single crystals in X-ray detector devices, charge transfer pathways in 2D perovskites with electroactive molecules and charge and energy transfer at the interface between high quality 2D/3D heterojunctions. I will show how the multimodal toolboxes can shed important light on these processes by connecting the photophysical findings directly with structural, chemical and morphological properties. This information sheds light on sources of unwanted non-radiative recombination processes, and opportunities for further functionality tuning through different compositions, structures and heterojunctions. These findings are only possible when considering physically realistic models, and such models and appropriate fitting approaches are discussed in detail.