This study explores vibrationally assisted delayed fluorescence (VADF) in Mn-doped CsPbBr₃ nanocrystals using Förster resonance energy transfer (FRET). Mn doping enhances the FRET efficiency significantly due to an increase in host fluorescence efficiency, indicating an increase in the radiative pathways due to VADF. We observed that Mn facilitates efficient back-transfer of charge carriers, improving energy transfer to acceptor molecules such as Rhodamine 6G (R6G). The simplicity of tuning optical properties through Mn doping presents a promising method to enhance the energy efficiency in donor–acceptor systems for optoelectronic applications. However, further research on halide concentrations, acceptor molecules, and electron transfer mechanisms is necessary to optimize these systems for effective light energy harvesting.

中文翻译：

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利用振动辅助延迟荧光增强 Mn 掺杂 CsPbBr3 纳米晶的能量转移


本研究使用 Förster 共振能量转移 （FRET） 探索了 Mn 掺杂 CsPbBr₃ 纳米晶体中的振动辅助延迟荧光 （VADF）。由于宿主荧光效率的增加，Mn 掺杂显著提高了 FRET 效率，表明 VADF 导致的辐射途径增加。我们观察到 Mn 促进电荷载流子的有效反向转移，改善向受体分子（如罗丹明 6G （R6G））的能量转移。通过 Mn 掺杂调整光学特性的简单性为提高光电应用的供体-受体系统的能源效率提供了一种很有前途的方法。然而，有必要进一步研究卤化物浓度、受体分子和电子转移机制，以优化这些系统以实现有效的光能收集。