Abstract Mn doped cesium lead halide perovskite nanocrystals (NCs) have potential application for white light emitting diodes. However, the emission of doped NCs is limited to trap-mediated energy transfer. The Mn doped CsPbCl3 NCs with corporation of rubidium (Rb+) ions (Mn:Cs1-xRbxPbCl3 NCs, x = 0, 0.1, 0.2, 0.3, and 0.4) were synthesized. The effect of the optical and structural properties of Mn:Cs1-xRbxPbCl3 NCs were studied by steady-state and time-resolved photoluminescence spectroscopy. The photoluminescence quantum yields and lifetimes of Mn doped CsPbCl3 NCs with different Rb+ contents were obtained. It was found that the Mn doped CsPbCl3 NCs with Rb+ content of 0.1 exhibited the highest Mn2+ emission quantum yield up to 63.18%. Interestingly, the temperature-dependent PL spectra demonstrated the enhanced Mn2+ emission of Mn doped CsPbCl3 NCs at low temperature of 80 K. The experimental result indicated the Mn2+ emission of Mn doped CsPbCl3 NCs was enhanced by incorporating Rb+ ions.

中文翻译：

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通过掺入铷离子增强 CsPbCl3 钙钛矿纳米晶体的锰发射

摘要 Mn 掺杂铯卤化铅钙钛矿纳米晶体（NCs）在白光发光二极管中具有潜在的应用价值。然而，掺杂 NCs 的发射仅限于陷阱介导的能量转移。合成了与铷 (Rb+) 离子结合的 Mn 掺杂的 CsPbCl3 NCs（Mn:Cs1-xRbxPbCl3 NCs，x = 0、0.1、0.2、0.3 和 0.4）。通过稳态和时间分辨光致发光光谱研究了 Mn:Cs1-xRbxPbCl3 NCs 的光学和结构特性的影响。获得了具有不同Rb+含量的Mn掺杂CsPbCl3 NCs的光致发光量子产率和寿命。结果表明，Rb+ 含量为 0.1 的 Mn 掺杂的 CsPbCl3 NCs 表现出最高的 Mn2+ 发射量子产率，高达 63.18%。有趣的是，