Login / Signup

Luminescent Perovskite-Cross-Linked Polymer with Low Shrinkage and Excellent Stability.

Haoqing TengLi MaChenhui CuiZhen LiKexiang ChenXiaoqing MingYinzhou GuoQiang ZhangZhishen GeYilong ChengAizhao PanYanfeng Zhang
Published in: ACS applied materials & interfaces (2024)
When organic cross-linked polymers are combined with metal halide perovskite nanocrystals (PNCs) for realizing luminescent perovskite-polymer display materials, the stability of PNCs is enhanced and their shrinkage is suppressed. This work presents a feasible strategy for preparing CsPbBr 3 nanocrystals (NCs) within a polydicyclopentadiene (PDCPD) thermosetting cross-linked resin matrix simultaneously via a one-step reaction. The obtained PDCPD@PNCs composite exhibits narrow peak half-widths (15-20 nm), high light transmittance (80%), low curing volume shrinkage (1.4%), tunable tensile properties, excellent stability, and a photoluminescence quantum yield (PLQY) of 44.3%. The composite material exhibits long-term stability in water, acid, and base solutions for over 90 days, with the PL intensity being maintained at over 90%. Furthermore, the composite is highly resistant to polar organic solvents owing to the insolubility imparted by cross-linking. White LEDs (WLED) fabricated using the as-prepared composite demonstrate excellent potential as light sources in optical devices.
Keyphrases
  • energy transfer
  • room temperature
  • quantum dots
  • light emitting
  • ionic liquid
  • solar cells
  • high efficiency
  • high resolution
  • photodynamic therapy
  • high intensity
  • molecular dynamics
  • water soluble