Tongtong Kou, Qilin Wei, Xinxin Han, Tong Chang, Shiguo Han, Liang Wang, William W. Yu
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引用次数: 0
Abstract
Mn2+ doping provides an effective approach to modulate the photoluminescence (PL)and X-ray scintillation properties of metal halide perovskites (MHPs); however, strategies to achieve customizable luminescence through structural design remain challenging. Here, 1D CsCdBr3, 1D/0D Cs7Cd3Br13, and 0D Cs3CdBr5 hosts were precisely synthesized via reactant ratio control. The different host structures were designed to induce distinct Mn2+ coordination environments, resulting in structure-dependent red, yellow, and green emission. The effects of Mn2+ incorporation on the photoluminescence and X-ray scintillation of different hosts were systematically studied through combined experimental and theoretical approaches. Warm white light-emitting diode (LED) fabricated from a mixture of the three compounds exhibited high color rendering (Ra = 91.4), a correlated color temperature of 4201 K, and CIE coordinates of (0.37, 0.38), demonstrating high-performance solid-state lighting. Flexible scintillator films embedded in a polydimethylsiloxane (PDMS) matrix showed excellent radioluminescence stability and high spatial resolution under X-ray irradiation. Notably, CsCdBr3:Mn displayed superior X-ray imaging performance (23.6 lp/mm) due to its high atomic packing factor and density. This work establishes a host structure guided strategy for constructing specific Mn polyhedra, offering a promising approach to developing multifunctional, high-performance solid-state lighting and flexible X-ray scintillator materials.
Graphical abstract
The alternative text for this image may have been generated using AI.
期刊介绍：
Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field.
The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest.
Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials.
Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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