High-Efficiency Luminescence of Mn2+-Doped Two-Dimensional Hybrid Metal Halides and X-Ray Detection
Year: 2025
Type: article
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 flexibility and PMMA films showed excellent X-ray imaging capability. This work demonstrates Mn2+ doping as an effective strategy to enhance luminescence in 2D perovskites, with potential applications in flexible optoelectronics and X-ray scintillators.
Source: Nanomaterials
DOI: 10.3390/nano15100713
Institution: Guangxi University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,896
Awards: G1300616604, G1382006463, G1617850927, G1895650480, G269491382, G3514008195, G4357141975, G4668929764, G4988311781, G4995399025, G5026643825, G5220606949, G5356015242, G5720176659, G5992801180, G6261949544, G6996979561, G7153601298, G7662137110, G7785015962, G7934843281, G7936378552, G8756508333, G8992079868
OpenAlex ID: W4410236201