Toward Full-Color Electroluminescent Quantum Dot Displays

Jiwoong Yang, Moon Kee Choi, U. Jeong Yang, Seo Young Kim, Young Seong Kim, Jeong Hyun Kim, Dae Hyeong Kim, Taeghwan Hyeon

Research output: Contribution to journalReview articlepeer-review

144 Scopus citations

Abstract

Colloidal quantum dots (QDs) exhibit unique characteristics such as facile color tunability, pure color emission with extremely narrow bandwidths, high luminescence efficiency, and high photostability. In addition, quantum dot light-emitting diodes (QLEDs) feature bright electroluminescence, low turn-on voltage, and ultrathin form factor, making them a promising candidate for next-generation displays. To achieve the overarching goal of the full-color display based on the electroluminescence of QDs, however it is essential to enhance the performance of QLEDs further for each color (e.g., red, green, and blue; RGB) and develop novel techniques for patterning RGB QD pixels without cross-contamination. Here, we present state-of-the-art material, process, and device technologies for full-color QLED-based displays. First, we highlight recent advances in the development of efficient red-, green-, and blue-monochromatic QLEDs. In particular, we focus on the progress of heavy-metal-free QLEDs. Then, we describe patterning techniques for individual RGB QDs to fabricate pixelated displays. Finally, we briefly summarize applications of such QLEDs, presenting the possibility of full-color QLED-based displays.

Original languageEnglish
Pages (from-to)26-33
Number of pages8
JournalNano Letters
Volume21
Issue number1
DOIs
StatePublished - 13 Jan 2021

Bibliographical note

Publisher Copyright:
©

Keywords

  • electroluminescence
  • full-color display
  • high-resolution patterning
  • light-emitting diode
  • quantum dot

Fingerprint

Dive into the research topics of 'Toward Full-Color Electroluminescent Quantum Dot Displays'. Together they form a unique fingerprint.

Cite this