InGaN-based single-chip multicolor light-emitting diodes

Takashi Azuhata, Takefumi Homma, Yoshikazu Ishikawa, Shige Fusa Chichibu

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A light-emitting diode (LED) driving technique to realize single-chip multicolor LEDs was proposed. The technique utilizes one of the characteristics of InGaN-based visible LEDs, the current-induced spectral blueshift. By applying pulsed current, which had two pulses of different amplitude in a cycle, to an InGaN single-quantum-well green LED, the light of two wavelengths corresponding to bluegreen and green was emitted from the same point, and the emission color of the LED was controlled continuously from bluegreen to green by adjusting only the pulse widths.

Original languageEnglish
Pages (from-to)L497-L498
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number5 B
Publication statusPublished - 2003 May 15
Externally publishedYes


  • InGaN
  • LED
  • Multicolor
  • Pulsed current
  • Single chip
  • Spectral blueshift

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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