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Updated: May 16, 2026

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Submicron Perovskite Quantum Dot Glass Microspheres for Micro-LED Displays.

Ye He1, Jiapeng Yang1, Shouying Mu1

  • 1College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China.

Advanced Materials (Deerfield Beach, Fla.)
|May 15, 2026
PubMed
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This summary is machine-generated.

Researchers developed stable perovskite quantum dot glass microspheres (PQDGMS) for micro-LED displays. These PQDGMS offer high quantum yield and excellent environmental stability, enabling efficient color conversion.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Quantum-dot (QD) color-conversion is key for full-color micro-LED displays.
  • Perovskite quantum dots (PQDs) are ideal but suffer from poor environmental stability.
  • This instability hinders their use in practical micro-LED applications.

Purpose of the Study:

  • To design novel, stable submicron-sized PQD glass microspheres (PQDGMS).
  • To achieve high quantum yield and excellent stability for micro-LED color conversion.
  • To overcome the limitations of PQDs in micro-LED display technology.

Main Methods:

  • A top-down strategy involving melt-quenching, secondary recrystallization, and submicronization was used.
  • Kilogram-scale (2 kg) PQDGMS were prepared.
Keywords:
color conversion pixelsmicro‐LEDperovskite quantum dotsself‐healing

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  • PQDs were passivated and self-healed by AgBr additive within a protective glass matrix.

    • Main Results:

    • PQDGMS demonstrated ultra-stability: >95% PL intensity after 10,000 h in water, >82% at 100°C, and >86% under 800 W m⁻² blue light for 240 h.
    • Color conversion pixels were fabricated using PQDGMS in a patterned glass substrate.
    • Fabricated green and red micro-LED chips achieved external quantum efficiencies of 24.8% and 16.7%, respectively.

    Conclusions:

    • Novel PQDGMS offer a promising solution for stable and efficient color conversion in micro-LED displays.
    • The glass matrix and AgBr additive provide excellent environmental and operational stability.
    • This advancement paves the way for practical, high-performance micro-LED display applications.