All-Inorganic Manganese-Based CsMnCl3 Nanocrystals for X-Ray Imaging

Lead-based halide perovskite nanomaterials with excellent optical properties have aroused great attention in the fields of solar cells, light-emitting diodes, lasing, X-ray imaging, etc. However, the toxicity of lead prompts researchers to develop alternatives to cut down the usage of lead. Herein, all-inorganic manganese-based perovskite derivatives, CsMnCl3 nanocrystals (NCs), with uniform size and morphology have been synthesized successfully via a modified hot-injection method. These NCs have a direct bandgap of 4.08 eV and a broadband emission centered at 660 nm. Through introducing modicum lead (1%) into the CsMnCl3 NCs, the photoluminescence intensity greatly improves, and the quantum yield (PLQY) increases from 0.7% to 21%. Furthermore, the CsMnCl3:1%Pb NCs feature high-efficiency of X-ray absorption and radioluminescence, which make these NCs promising candidates for X-ray imaging.

Automated summary

Lead-based halide perovskite nanomaterials with excellent optical properties have been widely studied for applications in solar cells, light-emitting diodes, lasing, and X-ray imaging. However, the toxicity of lead has led researchers to explore alternative materials. In this study, all-inorganic manganese-based perovskite derivatives were successfully synthesized, and the introduction of a small amount of lead greatly improved photoluminescence intensity and quantum yield. These nanomaterials also showed high-efficiency X-ray absorption and radioluminescence, making them promising candidates for X-ray imaging.