High-Efficiency Luminescence of Mn²⁺-Doped Two-Dimensional Hybrid Metal Halides and X-Ray Detection.

ABSTRACT: Mn²⁺ 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 Mn²⁺-doped 2D PEA₂CdCl₄ 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% Mn²⁺-doped crystal showed orange-red emission with 90.85% PLQY, attributed to efficient host-to-Mn²⁺ energy transfer and ⁴T₁→⁶A₁ transition. Prototype LEDs exhibited stable emission, while PDMS films demonstrated flexibil

SUBMITTER: Fan Y 

PROVIDER: S-EPMC12114107 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature