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Specific features of optical properties of Mn-rich metal halide perovskite nanocrystals
Optical Materials. 2026. Vol. 178. P. 118221.
Гущина В. А.
In press
Mn2+-doped perovskite nanocrystals (NCs) have recently emerged as promising phosphors for wide-gamut displays and white light-emitting diodes (WLEDs). In addition to their promising optical properties, these materials offer an environmental advantage: Mn replaces toxic Pb in perovskite structure, mitigating concerns associated with lead-based functional materials. This work investigates the optical properties of CsPb1-xMnxCl3 nanocrystals with high manganese content, reaching a molar fraction (x) of up to 0.68 (68%). We show that increasing Mn2+ concentration systematically widens the bandgap of these NCs, leading to a blueshift in the absorption edge and a corresponding shift in the excitonic photoluminescence (PL). The Mn2+-related emission band centered at ∼600 nm remained stable, exhibiting a spectral redshift of less than 10 nm across the entire concentration series. The full PL intensity stayed nearly constant within the 80-300 K temperature range, highlighting the improved temperature stability of Mn-rich NCs.
Research target:
Chemistry
Engineering and Technology
Chemical Technologies
Materials Technologies
Nanotechnologies
Language:
English
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