High-efficiency GaN-based light-emitting diodes fabricated with metallic hybrid reflectors

Hyunsoo Kim, Sung Nam Lee, Yongjo Park, Tae Yeon Seong

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We report on high-efficiency GaN-based light-emitting diodes (LEDs) fabricated with metallic hybrid reflectors (MHRs). It is shown that the MHRs consisting of an injection part (with low p-contact resistance and intermediate reflectance) and a spreading part (with high p-contact resistance and good reflectance) can enhance current injection and overall light reflectivity. Compared with reference LEDs with single reflectors, LEDs fabricated with Ag-based MHRs give higher output power by 8.9% and a reduction in forward voltage by 0.02 V (at 20 mA), resulting in the improvement of the power efficiency by ∼10%.

Original languageEnglish
Pages (from-to)582-584
Number of pages3
JournalIEEE Electron Device Letters
Volume29
Issue number6
DOIs
Publication statusPublished - 2008 Jun

Keywords

  • Electrode
  • GaN
  • Light-emitting diode (LED)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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