AlGaInP light-emitting diodes with stripe patterned omni-directional reflector

Y. J. Lee, T. C. Lu, H. C. Kuo, S. C. Wang, M. J. Liou, C. W. Chang, T. C. Hsu, M. H. Hsieh, M. J. Jou, B. J. Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An n-side-up AlGaInP-based light-emitting diode (LED) with a stripe-patterned omni-directional reflector (ODR) was fabricated by adopting the adhesive-layer bonding scheme. Comparing to the conventional ODR LED, the stripe-patterned ODR LED significantly enhanced the output power with an only slight higher forward voltage. This improvement was analyzed by the scanning near-field optical microscope (SNOM) and could be attributable to the geometrical shape of stripe patterns that redirects the guided light towards to the escaping cone of the LED surface. The optimized dimension of stripe patterns was also calculated by simply modeling a LED dice with a stripe-patterned ODR structure, according to optical ray-tracing method.

Original languageEnglish
Pages (from-to)643-645
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number2 A
DOIs
Publication statusPublished - 2006 Feb 8

Keywords

  • AlGaInP
  • Omni-directional reflector (ODR)
  • Scanning near-field optical microscope (SNOM)

ASJC Scopus subject areas

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

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