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Submicron Structure Confined Polymers for High-Performance Intrinsically Stretchable Light-Emitting Diodes.

Wenkang Shi1,2, Chunyu Hua1,2, Yanyan Cao1,2

  • 1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|November 17, 2025
PubMed
Summary

Researchers developed intrinsically stretchable polymer light-emitting diodes (PLEDs) by incorporating microcrystalline elastomer. This innovation enhances luminescence and enables high-performance, skin-like wearable displays.

Keywords:
high external quantum efficiencylight outcoupling efficiencystretchable polymer light‐emitting diodessubmicron structures

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Polymer Chemistry

Background:

  • Stretchable polymer light-emitting diodes (PLEDs) are crucial for advanced wearable displays.
  • Achieving high stretchability, efficient luminescence, and easy integration simultaneously remains a significant challenge.

Purpose of the Study:

  • To develop intrinsically stretchable PLEDs with improved performance and integration capabilities.
  • To introduce a novel strategy for fabricating high-performance stretchable optoelectronic devices.

Main Methods:

  • Incorporation of microcrystalline elastomer into light-emitting polymer matrices.
  • Formation of submicron optical self-gain structures and nanofiber morphology via spatial nanoconfinement.
  • Fabrication of stretchable PLED arrays using electrohydrodynamic printing.

Main Results:

  • Achieved current efficiency (CE) of 13.70 cd A⁻¹, external quantum efficiency (EQE) of 4.70%, and low turn-on voltage of 3.70 V.
  • Demonstrated high luminance of 32,013 cd m⁻² at 9 V.
  • Fabricated 12 × 12 stretchable PLED arrays with excellent photoelectric stability under strain.

Conclusions:

  • The novel approach enables intrinsically stretchable PLEDs with enhanced crystallinity, carrier transport, and light outcoupling.
  • This method offers a promising pathway for creating high-performance, stretchable, and wearable electronic displays.