Fabrication and optical properties of blue LEDs with silica microsphere coating

K. Kusakabe*, S. Funazaki, K. Okamoto, S. Nishizawa, K. Ohkawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We report the enhancement of light extraction efficiency of InGaN-based blue light emitting diodes by using a surface light-scattering layer. A number of SiO2 microspheres embedded into a ZrO2 thin layer played a role of a light-scattering medium. Coating the light-scattering layer on device surface, the interference fringes of electroluminescence (EL) spectra were eliminated and the EL intensity around 440-450 nm was increased by a factor of 1.3.

Original languageEnglish (US)
Pages (from-to)25-28
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume4
Issue number1
DOIs
StatePublished - 2007
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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