Fabrication of Flexible White Light-Emitting Diodes from Photoluminescent Polymer Materials with Excellent Color Quality

Huang Yu Lin, Chin Wei Sher, Chih Hao Lin, Hsien Hao Tu, Xin Yin Chen, Yi Chun Lai, Chien-Chung Lin*, Huang-Ming Chen, Pei-Chen Yu, Hsin-Fei Meng, Gou Chung Chi, Keiji Honjo, Teng-Ming Chen, Hao-Chung Kuo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

This study developed flexible light-emitting diodes (LEDs) with warm white and neutral white light. A simple ultraviolet flip-chip sticking process was adopted for the pumping source and combined with polymer and quantum dot (QD) films technology to yield white light. The polymer-blended flexible LEDs exhibited higher luminous efficiency than the QD-blended flexible LEDs. Moreover, the polymer-blended LEDs achieved excellent color-rendering index (CRI) values (Ra = 96 and R9 = 96), with high reliability, demonstrating high suitability for special applications like accent, down, or retrofit lights in the future. In places such as a museum, kitchen, or surgery room, its high R9 and high CRI characteristics can provide high-quality services.

Original languageEnglish
Pages (from-to)35279-35286
Number of pages8
JournalACS Applied Materials and Interfaces
Volume9
Issue number40
DOIs
StatePublished - 11 Oct 2017

Keywords

  • color-rendering index
  • flexible device
  • light-emitting diode
  • polyfluorene
  • quantum dots

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