Scientific Reports (Mar 2024)

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

  • Fu-He Hsiao,
  • Wen-Chien Miao,
  • Tzu-Yi Lee,
  • Yi-Hua Pai,
  • Yu-Ying Hung,
  • Daisuke Iida,
  • Chun-Liang Lin,
  • Chi-Wai Chow,
  • Gong-Ru Lin,
  • Kazuhiro Ohkawa,
  • Hao-Chung Kuo,
  • Yu-Heng Hong

DOI
https://doi.org/10.1038/s41598-024-57132-9
Journal volume & issue
Vol. 14, no. 1
pp. 1 – 11

Abstract

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Abstract This study showcases a method for achieving high-performance yellow and red micro-LEDs through precise control of indium content within quantum wells. By employing a hybrid quantum well structure with our six core technologies, we can accomplish outstanding external quantum efficiency (EQE) and robust stripe bandwidth. The resulting 30 μm × 8 micro-LED arrays exhibit maximum EQE values of 11.56% and 5.47% for yellow and red variants, respectively. Notably, the yellow micro-LED arrays achieve data rates exceeding 1 Gbit/s for non-return-to-zero on–off keying (NRZ-OOK) format and 1.5 Gbit/s for orthogonal frequency-division multiplexing (OFDM) format. These findings underscore the significant potential of long-wavelength InGaN-based micro-LEDs, positioning them as highly promising candidates for both full-color microdisplays and visible light communication applications.