Fabrication of a Highly Stable White Light-Emitting Diode with Multiple-Layer Colloidal Quantum Dots

Shun Chieh Hsu, Li Ann Ke, Hsiu Ching Lin, Teng-Ming Chen, Huang Yu Lin, Yu Ze Chen, Yu Lun Chueh, Hao-Chung Kuo, Chien-Chung Lin

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

A hybrid design by combination of colloidal quantum dots and a traditional light-emitting diode is demonstrated to realize a high-quality white source. The cadmium telluride quantum dots are wrapped in the sodium chloride ionic crystal to prevent from environmental corrosion. Three different colors (red, yellow, and green) are picked to provide a better color rendering capability. The single color layer sequence in the package can be properly designed to obtain the best spectrum output. A stable (over 1500 h of continuous operation) and high color rendering index (>92) quantum dot white light-emitting diode can be demonstrated.

Original languageEnglish
Article number7875439
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume23
Issue number5
DOIs
StatePublished - 10 Mar 2017

Keywords

  • colloidal quantum dots
  • lifetime estimation
  • Light emitting diodes
  • nanocrystals

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