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Epitaxial Nanostructured α-Quartz Films on Silicon: From the Material to New Devices
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Silica Aerogel-Encapsulated CsPbX3 Nanocrystals: A Robust Platform with Enhanced Optical Performance for

Xihui Pan1, Xuan Zhang1, Jun Xiong1

  • 1College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.

ACS Applied Materials & Interfaces
|June 17, 2026
PubMed
Summary

We developed a robust silica aerogel encapsulation for perovskite nanocrystals, significantly enhancing their stability for displays. This dual-protection method overcomes previous limitations, enabling vibrant and long-lasting color-gamut applications.

Keywords:
CsPbX3 perovskite nanocrystalsmolten-salt sinteringsilica aerogelswide-color gamut

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • All-inorganic halide perovskite nanocrystals (NCs) possess excellent optoelectronic properties but suffer from poor stability, hindering their use in displays.
  • Existing encapsulation methods often fail to provide adequate protection against environmental stressors like moisture and heat.

Purpose of the Study:

  • To develop a stable and scalable encapsulation strategy for perovskite nanocrystals (CsPbX3 NCs).
  • To improve the long-term stability and optical performance of NCs for wide-color-gamut display applications.

Main Methods:

  • A dual-encapsulation approach using low-cost silica aerogels (AGs) and an improved low-temperature molten-salt sintering method.
  • In situ formation of a secondary PbBr(OH) shell via alkaline treatment for enhanced chemical protection.
  • Characterization of the CsPbBr3@AGs(OH) composites' optical properties and stability under various stress conditions.

Main Results:

  • The CsPbBr3@AGs(OH) composites achieved a high photoluminescence quantum yield of 91% with intense green emission.
  • Demonstrated remarkable resistance to moisture, heat, and high-intensity irradiation, retaining 97.6% luminance after 1000h of blue-light exposure.
  • Achieved ultrawide color-gamut coverage (132.85% NTSC, 99.2% Rec.2020) using blue-, green-, and red-emitting NCs.

Conclusions:

  • The developed silica aerogel encapsulation provides a universal, low-cost, and scalable platform for stabilizing perovskite nanocrystals.
  • This dual-encapsulation strategy significantly enhances optical performance and long-term stability, paving the way for next-generation display technologies.
  • The method offers a promising solution for overcoming the stability challenges of perovskite nanocrystals in practical optoelectronic applications.