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Updated: May 22, 2025

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Rewritable Triple-Mode Light-Emitting Display.

Seokyeong Lee1, Jong Woong Park1, Jihye Jang1

  • 1Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea.

Nano-Micro Letters
|March 13, 2025
PubMed
Summary

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This summary is machine-generated.

This study introduces a rewritable triple-mode display using fluorescence, room-temperature phosphorescence, and electroluminescence. The display offers tunable light emissions and enables secure information encryption through multi-modal encoding.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Display Technology

Background:

  • Mode-selective light emission technologies are advancing, but rewritable displays with multiple emission modes remain limited.
  • Developing displays with stimuli-responsive light emission is crucial for novel applications.

Purpose of the Study:

  • To present a novel rewritable triple-mode light-emitting display.
  • To demonstrate stimuli-interactive fluorescence (FL), room-temperature phosphorescence (RTP), and electroluminescence (EL) in a single device.
  • To explore applications in high-security information encryption.

Main Methods:

  • Fabrication of a display using coplanar electrodes, a polymer composite with FL inorganic phosphors (EL/FL layer), and a polymer composite with solvent-responsive RTP additives (RTP layer).
Keywords:
Alternating-current electroluminescenceInformation encryptionMultimode luminescenceRoom-temperature phosphorescenceStimuli-responsive materials

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  • Activation of dual-mode emission (RTP and FL) via UV exposure.
  • Triggering triple-mode operation (FL, RTP, EL) by applying polar liquids and an AC field.
  • Demonstration of rewritability by manipulating liquid evaporation.
  • Development of a high-security full-color information encryption display.

    • Main Results:

    • The display successfully exhibits dual-mode (RTP/FL) and triple-mode (FL/RTP/EL) light emissions.
    • RTP mode can be selectively deactivated by water, enabling dual-mode FL and EL operation.
    • Mode-selective light emission is rewritable by controlling liquid evaporation.
    • A high-security information encryption display was demonstrated, requiring multi-modal matching for deciphering.

    Conclusions:

    • The developed triple-mode display offers a versatile platform for stimuli-responsive and rewritable light emission.
    • This technology addresses the demand for high-security personalized information display solutions.
    • The findings pave the way for advanced optoelectronic devices with multi-modal functionalities.