Enhanced Fluorescence and Stability of Perovskite Nanocrystals via MOF-5 Encapsulation

Strategic Insights -

Scientists at Suzhou University of Science and Technology have made significant advancements in the field of nanotechnology by developing a new method to enhance the fluorescence and stability of perovskite nanocrystals. The researchers successfully synthesized CsPbBr3@MOF-5 composites through a physical mixing method, which exhibited improved photoluminescence quantum yield (PLQY) and stability compared to pristine CsPbBr3 NCs. The composites achieved a remarkable PLQY improvement from 22% to 56% and retained 55% of their initial PL intensity after 60 days of ambient storage. Additionally, the composite exhibited superior resistance to anion exchange when combined with CsPbBrxI3-x NCs.

Key Takeaways:

  • Researchers at Suzhou University of Science and Technology developed a new method to enhance the fluorescence and stability of perovskite nanocrystals by encapsulating them within hierarchical porous zinc-based metal-organic framework (MOF-5) composites.
  • The composites exhibited improved photoluminescence quantum yield (PLQY) and stability compared to pristine CsPbBr3 NCs, retaining 55% of their initial PL intensity after 60 days of ambient storage.
  • The composites achieved a remarkable PLQY improvement from 22% to 56% and exhibited superior resistance to anion exchange when combined with CsPbBrxI3-x NCs.
  • A white LED (WLED) device fabricated using CsPbBr3@MOF-5 composite and K2SiF6:Mn2+ (KSF) red phosphor exhibited a luminous efficiency of 20.71 lm/W, a correlated color temperature (CCT) of 5486 K, and a broad color gamut covering 133.3% of the National Television Standards Committee (NTSC) standard.
  • The research has been peer-reviewed and published in the journal Ceramics International.

Statistics:

  • 22%: Initial photoluminescence quantum yield (PLQY) of pristine CsPbBr3 NCs
  • 56%: Improved PLQY of CsPbBr3@MOF-5 composites
  • 55%: Retained PL intensity of CsPbBr3@MOF-5 composites after 60 days of ambient storage
  • 20.71 lm/W: Luminous efficiency of the white LED (WLED) device fabricated using CsPbBr3@MOF-5 composite and K2SiF6:Mn2+ (KSF) red phosphor
  • 133.3%: Broad color gamut of the white LED (WLED) device fabricated using CsPbBr3@MOF-5 composite and K2SiF6:Mn2+ (KSF) red phosphor

Sources:

  • "Enhanced Fluorescence and Stability of Cspbbr3 Perovskite Nanocrystals Via Mof-5 Encapsulation With Hierarchical Pore Structures." Ceramics International, vol. 51, no. 20, 2025, pp. 31818-31827. Elsevier Sci Ltd, 125 London Wall, London, England. (Elsevier - www.elsevier.com; Ceramics International - www.journals.elsevier.com/ceramics-international/)
  • NewsRx. Studies from Suzhou University of Science and Technology in the Area of Nanocrystals Described (Enhanced Fluorescence and Stability of Cspbbr3 Perovskite Nanocrystals Via Mof-5 Encapsulation With Hierarchical Pore Structures). Nanotechnology Weekly. October 20, 2025; p 4830.