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Advancing high-performance visible light communication with long-wavelength InGaN-based micro-LEDs.

Fu-He Hsiao1,2, Wen-Chien Miao1,2, Tzu-Yi Lee3

  • 1Semiconductor Research Center, Hon Hai Research Institute, Taipei, 11492, Taiwan.

Scientific Reports
|March 26, 2024
PubMed
Summary
This summary is machine-generated.

High-performance yellow and red micro-LEDs were developed using precise indium control in quantum wells. These advanced micro-light-emitting diodes (micro-LEDs) show potential for microdisplays and visible light communication.

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Semiconductor Physics

Background:

  • Micro-LED technology is crucial for next-generation displays and communication.
  • Achieving high efficiency and specific wavelengths (yellow, red) in micro-LEDs remains a challenge.

Purpose of the Study:

  • To demonstrate a method for fabricating high-performance yellow and red micro-LEDs.
  • To optimize indium content in hybrid quantum well structures for enhanced performance.

Main Methods:

  • Utilized a hybrid quantum well structure with six core technologies.
  • Precisely controlled indium composition within the quantum wells.
  • Fabricated 30 μm × 8 μm micro-LED arrays.

Main Results:

  • Achieved maximum external quantum efficiencies (EQE) of 11.56% for yellow and 5.47% for red micro-LEDs.
  • Demonstrated robust stripe bandwidth in the developed micro-LEDs.
  • Yellow micro-LEDs reached data rates over 1 Gbit/s (NRZ-OOK) and 1.5 Gbit/s (OFDM).

Conclusions:

  • Precise indium control in hybrid quantum wells enables high-performance long-wavelength micro-LEDs.
  • The developed InGaN-based micro-LEDs are suitable for full-color microdisplays.
  • These micro-LEDs show significant promise for visible light communication applications.