Excellent color quality of white-light-emitting diodes by embedding quantum dots in polymers material

Huang Yu Lin, Sheng Wen Wang, Chien-Chung Lin, Kuo Ju Chen, Hau Vei Han, Zong Yi Tu, Hsien Hao Tu, Teng-Ming Chen, Min Hsiung Shih, Po-Tsung Lee, Huang-Ming Chen, Hao-Chung Kuo

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

This study employs the polyfluorene composite (called Green B) with several colors of quantum dots to generate the high-color-rendering index (CRI) white LEDs. The Green B polymer is a good candidate to manufacture the hybrid w-LED because of its good quantum efficacy. The hybrid w-LEDs are fabricated by the mixing of Green B with yellow quantum dots and red quantum dots or orange quantum dots to obtain the correlated color temperatures of 3500 and 5500 K. The use of the hybrid polymer/QDs w-LEDs is proved to be beneficial as QD w-LEDs can improve the CRI up to 90 in 3500 K. The luminous efficiency of such devices can be as high as 17.2l m/W.

Original languageEnglish
Article number7138577
Number of pages7
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume22
Issue number1
DOIs
StatePublished - Jan 2016

Keywords

  • light-emitting diodes (LEDs)
  • quantum dots (QDs)

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