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Related Concept Videos

Photoluminescence: Fluorescence and Phosphorescence01:23

Photoluminescence: Fluorescence and Phosphorescence

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Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
2.0K
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  3. Research Domains
  5. Engineering
  7. Materials Engineering
  9. Wearable Materials
  11. Large-scale, Stretchable, Self-protective, And Multifunctional Perovskite Luminescent Filament With Ultra-high Stability

Large-Scale, Stretchable, Self-Protective, and Multifunctional Perovskite Luminescent Filament with Ultra-High Stability

Liyan Yang1, Yunpeng Liu1, Xiaofang Li1

  • 1Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Wuhan, 430200, China.

Advanced Materials (Deerfield Beach, Fla.)
|March 18, 2024

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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
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Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
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Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

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View abstract on PubMed

Summary
This summary is machine-generated.

Ultra-stable perovskite luminescent filaments (PLFs) were developed using eco-friendly wet-spinning. These highly stretchable PLFs exhibit remarkable stability against moisture, heat, UV light, and chemicals, enabling advanced flexible electronic applications.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Lead halide perovskites offer excellent optoelectronic properties for flexible displays and wearable devices.
  • Their practical application is limited by poor stability against moisture, heat, and UV light.
  • Developing robust perovskite materials is crucial for advancing optoelectronic technologies.

Purpose of the Study:

  • To develop an ultra-stable and highly stretchable perovskite luminescent filament (PLF).
  • To investigate the stabilization mechanism of the PLF through in-situ encapsulation.
  • To explore the potential applications of the developed PLF in various fields.

Main Methods:

  • Facile, environmental-friendly wet-spinning technology utilizing solvent extraction.
  • In-situ encapsulation of CsPbX3 perovskite within a hydrophobic thermoplastic polyurethane (TPU) matrix.
Keywords:
PLhigh stabilityluminescent filamentmultifunction

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  • Comprehensive stability testing under various environmental stressors (humidity, heat, UV, pH, solvents).

    • Main Results:

    • Achieved ultra-high stretchability (≈2400%) and high photoluminescence quantum yield (PLQY) of 24.5%.
    • Demonstrated exceptional photoluminescence stability in ambient air, high humidity, at 50 °C, in water for 30 days, under UV for 300 min, and across a wide pH range (1-13).
    • Retained 80% of initial photoluminescence after five recycling cycles, showcasing durability.

    Conclusions:

    • The developed CsPbX3 PLF exhibits unprecedented stability and stretchability, overcoming key limitations of lead halide perovskites.
    • The in-situ encapsulation and Lewis base-acid interaction provide effective protection against degradation.
    • The PLF shows significant promise for multifunctional applications including flexible displays, sensors, and anti-counterfeiting systems.
    perovskite