Enhancement of light extraction efficiency of remote phosphor white light-emitting diode using a hemiellipsoidal antireflection subwavelength structure polyethylene terephthalate film

Yung Fang Chou, Chi Feng Chen, Shang Ping Ying, Yun Ying Yeh

Research output: Contribution to journalArticlepeer-review

Abstract

This study enhanced the light extraction efficiency(LEE)of a remote phosphor white LED by using a hemiellipsoidal antireflection subwavelength structure (ASS) polyethylene terephthalate (PET) film. The PET film was fabricated and combined with a hemiellipsoidal ASS on the surface of a remote phosphor white LED through a UV-curing adhesive process. The improvements in the LEE of the remote phosphorwhite LED with an ASS PET film are 11.76% and 23.26% compared with the remote phosphor white LED and conventional phosphor-converted white LED.

Original languageEnglish
Pages (from-to)292-297
Number of pages6
JournalOptoelectronics and Advanced Materials, Rapid Communications
Volume11
Issue number5-6
StatePublished - 1 May 2017

Keywords

  • Antireflection subwavelength structure
  • FDTD
  • Light extraction efficiency
  • Remote phosphor white LED

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