Abstract
Colloidal nanocrystals (NCs) are widely used in various applications, such as in electronic devices, phosphors, lasers, magnets, and catalysts. The synthesis of uniform nanomaterials with controlledsizes, shapes, and compositions is crucial to understand their size-, shape-, and composition-dependent physical and chemical properties precisely. Herein, we described the chemistry of novel materials for synthesizing lead-free cesium bismuth bromide NCs with precise control of their compositions. Colloidal NCs were synthesized via an injection-free heating-up method in the presence of a solvent mixture with a high boiling point. We systematically modified the structure and composition of perovskite or perovskite-related NCs to investigate the photoluminescence properties of uniform and phase-pure cesium bismuth bromide NCs, depending on their compositions.
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