High efficiency AlGaInN-based light emitting diode in the 360-380 nm wavelength range

  • Hisao Sato
  • , Hong Xing Wang
  • , Daisuke Sato
  • , Ryohei Takaki
  • , Naoki Wada
  • , Tetsuya Tanahashi
  • , Kenji Yamashita
  • , Shunsuke Kawano
  • , Takashi Mizobuchi
  • , Akihiko Dempo
  • , Kenji Morioka
  • , Masahiro Kimura
  • , Suguru Nohda
  • , Tomoya Sugahara
  • , Shiro Sakai

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

High performance LEDs emitting in the wavelength range 360-380 nm, are fabricated on sapphire substrates by one-time metalorganic chemical vapor deposition (MOCVD) without using epitaxial lateral overgrowth (ELO) or similar techniques. By improving layer structures and growth conditions, the output power of the LEDs was much improved. The light output power of the LEDs at an injection current of 20 mA is 3.2 mW, 2.5 mW and 1 mW at wavelengths of 378 nm, 373 nm and 363 nm, which correspond to an external quantum efficiency of 4.8%, 3.8% and 1.4%, respectively.

Original languageEnglish
Pages (from-to)102-105
Number of pages4
Journalphysica status solidi (a)
Volume200
Issue number1
DOIs
StatePublished - Nov 2003
Externally publishedYes

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