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    Toward Full-Color Electroluminescent Quantum Dot Displays
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    • Jiwoong Yang
      Jiwoong Yang
      Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
      More by Jiwoong Yang
      Orcidhttp://orcid.org/0000-0002-2346-8197
    • Moon Kee Choi
      Moon Kee Choi
      Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
      More by Moon Kee Choi
      Orcidhttp://orcid.org/0000-0003-4536-3393
    • U Jeong Yang
      U Jeong Yang
      Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
      More by U Jeong Yang
    • Seo Young Kim
      Seo Young Kim
      Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
      More by Seo Young Kim
    • Young Seong Kim
      Young Seong Kim
      Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
      School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
      More by Young Seong Kim
    • Jeong Hyun Kim
      Jeong Hyun Kim
      Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
      School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
      More by Jeong Hyun Kim
    • Dae-Hyeong Kim*
      Dae-Hyeong Kim
      Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
      School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
      *Email: [email protected]
      More by Dae-Hyeong Kim
      Orcidhttp://orcid.org/0000-0002-4722-1893
    • Taeghwan Hyeon*
      Taeghwan Hyeon
      Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
      School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
      *Email: [email protected]
      More by Taeghwan Hyeon
      Orcidhttp://orcid.org/0000-0001-5959-6257
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    Nano Letters

    Cite this: Nano Lett. 2021, 21, 1, 26–33
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    https://doi.org/10.1021/acs.nanolett.0c03939
    Published December 1, 2020
    Copyright © 2020 American Chemical Society
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    Abstract

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    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.

    Copyright © 2020 American Chemical Society

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