Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.476
Publication date: 16th December 2024
Perovskite nanocrystals (NCs) are emerging as promising materials for next-generation light-emitting diodes (LEDs) and scintillators, offering significant potential for optoelectronics and radiation detection [1,2]. This presentation explores recent advancements and challenges in developing perovskite-based materials for these applications. We focus on Ruddlesden–Popper (RP) interfaces in mixed halide perovskites (MHPs), which play a critical role in optimizing device performance [1,2]. Using aberration-corrected high-angle annular dark-field scanning transmission electron microscopy, we examine atomic-level defects and strain at these interfaces, revealing how halide migration affects the structural integrity and electroluminescence of MHP-based devices. In addition to lead halide perovskite NCs, we explore the growing interest in low-dimensional, lead-free copper halide perovskite (CHP) NCs for scintillation applications [3]. By employing mechanochemical methods, we synthesize 1D and 0D CHP NCs and investigate their scintillation properties, including decay times and Stokes shifts. Our findings show that tuning the I:Br composition ratio enhances scintillation performance, providing insights into the design of fast-decaying, ultrasensitive X-ray detectors. The presentation will also highlight ongoing research into nanophotonic structures, such as photonic crystals and plasmonic structures, that enhance light emission via Purcell effects, offering the potential for faster, brighter LEDs and scintillators in future technologies [4].
S.M. acknowledges the support by the European Commission (agreement no. 945339) and the Polish National Science Centre under the Marie Skłodowska-Curie COFUND grant (POLONEZ BIS 2) under agreement no: UMO-2022/45/P/ ST3/04170. M.D.B. acknowledges funding from National Science Center, Poland, under grant OPUS-24 no. 2022/47/ B/ST5/01966.
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