Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.412
Publication date: 16th December 2024
Perovskites face significant stability challenges arising from both extrinsic factors like humidity and intrinsic issues linked to their ionic nature. These stability limitations hinder the long-term performance of perovskite-based devices. Mastering crystallization processes, whether in thin films or bulk, is a critical step in overcoming these obstacles. High-quality, highly crystalline materials are essential not only for enhanced stability but also for reliable characterization, which is key to understanding the mechanisms governing device operation.
Monocrystalline perovskites offer a compelling alternative to conventional thin films, benefiting from the absence of grain boundaries and their associated defects. Achieving these high-quality materials demands precise control over synthesis methods to improve both material properties and stability.
In this contribution, we will explore diverse synthesis approaches for perovskite single crystals, including the widely used inverse temperature crystallization (ITC) with seed-assisted growth, adaptations for multi-halide-core crystals and confined-growth methods. We will also introduce two innovative techniques: a continuous-flow reactor for large-scale crystal growth and a novel dry synthesis methodology for narrow-bandgap perovskites.
Furthermore, we will present advanced and non-conventional characterization techniques applicable to these materials, both as stand-alone crystals and in optoelectronic devices. Finally, we will demonstrate the remarkable stability of high-crystallinity perovskite single crystals, including their performance under extreme conditions such as gamma radiation, highlighting their potential for space applications.
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