Effects of cell distance on the performance of GaN high-voltage light emitting diodes

Ray-Hua Horng, Kun Ching Shen, Yu Wei Kuo, Dong Sing Wuu

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The effect of spacing among cell LEDs in high voltage (HV) LEDs performance was investigated in this study. Four kinds of HV-LEDs with different spacing are presented. From the results of LEDs output power and luminance intensity distribution, the spacing certainly influences the light extraction of LEDs. The 110% enhanced output power and 10% increased Wall-plug efficiency HV-LED was demonstrated with using 80 μm spacing in compared with 20 μm due to the suppression of light absorbed by neighbor cell LEDs.

Original languageEnglish
JournalECS Solid State Letters
Volume1
Issue number5
DOIs
StatePublished - 1 Dec 2012

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