Enhancing light conversion efficiency of YAG:Ce phosphor substrate using nanoimprinted functional structures

Daihong Huh, Wonjoong Kim, Kwan Kim, Soomin Son, Jaemin Park, Sucheol Ju, Dongwoo Chae, Seungho Baek, Heon Lee

Research output: Contribution to journalArticle

Abstract

A phosphor substrate converts a moderate amount of blue light to green light to produce white light. In this study, we have successfully demonstrated the enhancement of the light extraction efficiency of YAG:Ce phosphor substrate using a simple imprint process. Spin-on-glass materials were used to fabricate a pattern on the surface of a phosphor substrate, and nano- and micro-scale patterns were formed to test the performance according to the size of pattern. The light extraction efficiency of the phosphor substrate with a micro-cone pattern increased by 33.2% compared with the flat phosphor substrate.

Original languageEnglish
Article number144003
JournalNanotechnology
Volume31
Issue number14
DOIs
Publication statusPublished - 2020 Jan 21

Keywords

  • Functional pattern
  • Micro-cone
  • Moth-eye
  • Nanoimprint lithography
  • Phosphor

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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