Optimization of nano-honeycomb structures for flexible w-LEDs

Huang Yu Lin, Yung Min Pai, Jing Xing Shi, Xin Yin Chen, Chunghsiang Lin, Chih Ming Weng, Tzu Yu Chen, Chien-Chung Lin, Martin David Brian Charlton, Yi-Pai Huang, Chyong-Hua Chen, Huang-Ming Chen, Hao-Chung Kuo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study presents the low cost fabrication of flexible white-light-emitting diodes (w-LEDs) with nano-honeycomb-structured phosphor films. Extending the dimensions of the nano-honeycomb structures improved the color uniformity of the flexible samples, and the 950-nm pattern sample demonstrated optimal color uniformity because this nano-pattern exhibited an excellent diffusion ability owing to its pitch size. In addition to color uniformity, the use of this nano-pattern improved the luminous efficiency. The 750-nm pattern exhibited the highest luminous efficiency (235.8 lm/W), which was approximately 7% higher than that exhibited by a non-patterned phosphor film sample. Thus, flexible w-LEDs with nano-honeycomb structure optimization have great potential to be used as next-generation lighting sources.

Original languageEnglish
Pages (from-to)20466-20476
Number of pages11
JournalOptics Express
Volume25
Issue number17
DOIs
StatePublished - 21 Aug 2017

Keywords

  • LIGHT-EMITTING-DIODES
  • SILICON SOLAR-CELLS
  • GUIDE PLATES
  • LARGE-AREA
  • IMPROVEMENT
  • EFFICIENCY
  • ELECTRONICS
  • FABRICATION
  • technology
  • UNIFORMITY

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