Fan Yue, Wang Yingyun, Bai Yunlong, Zou Bingsuo, Zeng Ruosheng
School of Physical Science and Technology, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China.
Nanomaterials (Basel). 2025 May 9;15(10):713. doi: 10.3390/nano15100713.
Mn doping in metal halide perovskites enables host-to-dopant energy transfer, creating new emission pathways for optoelectronic applications. However, achieving high-efficiency luminescence in 2D systems remains challenging. We synthesized Mn-doped 2D PEACdCl via the hydrothermal method, characterizing its properties through PL spectroscopy, quantum yield measurements, and DFT calculations. Flexible films were fabricated using PDMS and PMMA matrices. The 15% Mn-doped crystal showed orange-red emission with 90.85% PLQY, attributed to efficient host-to-Mn energy transfer and T→A transition. Prototype LEDs exhibited stable emission, while PDMS films demonstrated flexibility and PMMA films showed excellent X-ray imaging capability. This work demonstrates Mn doping as an effective strategy to enhance luminescence in 2D perovskites, with potential applications in flexible optoelectronics and X-ray scintillators.
在金属卤化物钙钛矿中掺杂锰可实现从主体到掺杂剂的能量转移，为光电子应用创造新的发射途径。然而，在二维体系中实现高效发光仍然具有挑战性。我们通过水热法合成了锰掺杂的二维PEACdCl，并通过光致发光光谱、量子产率测量和密度泛函理论计算对其性质进行了表征。使用聚二甲基硅氧烷（PDMS）和聚甲基丙烯酸甲酯（PMMA）基质制备了柔性薄膜。15%锰掺杂的晶体呈现橙红色发射，量子产率为90.85%，这归因于从主体到锰的高效能量转移以及三重态到单重态的跃迁。原型发光二极管表现出稳定的发射，而PDMS薄膜展现出柔韧性，PMMA薄膜则显示出优异的X射线成像能力。这项工作证明了锰掺杂是增强二维钙钛矿发光的有效策略，在柔性光电子学和X射线闪烁体方面具有潜在应用。
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