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Full-colour quantum dot displays fabricated by transfer printing

Nature photonics, 2011-03, Vol.5 (3), p.176-182 [Peer Reviewed Journal]

Copyright Nature Publishing Group Mar 2011 ;ISSN: 1749-4885 ;EISSN: 1749-4893 ;DOI: 10.1038/nphoton.2011.12

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  • Title:
    Full-colour quantum dot displays fabricated by transfer printing
  • Author: Lee, Sang Jin ; Choi, Byoung Lyong ; Chae, Jungseok ; Kim, Kinam ; Lee, Eun Kyung ; Kim, Jong Min ; Kuk, Young ; Kim, Jung Woo ; Lee, Sang Yoon ; Kim, Do Hwan ; Kwon, Jang-Yeon ; Amaratunga, Gehan ; Cho, Kyung-Sang ; Kim, Tae-Ho
  • Subjects: Displays ; Illumination ; Lighting ; Nanostructure ; Networks ; Optoelectronic devices ; Quantum dots ; Transfer printing
  • Is Part Of: Nature photonics, 2011-03, Vol.5 (3), p.176-182
  • Description: Light-emitting diodes with quantum dot luminophores show promise in the development of next-generation displays, because quantum dot luminophores demonstrate high quantum yields, extremely narrow emission, spectral tunability and high stability, among other beneficial characteristics. However, the inability to achieve size-selective quantum dot patterning by conventional methods hinders the realization of full-colour quantum dot displays. Here, we report the first demonstration of a large-area, full-colour quantum dot display, including in flexible form, using optimized quantum dot films, and with control of the nano-interfaces and carrier behaviour. Printed quantum dot films exhibit excellent morphology, well-ordered quantum dot structure and clearly defined interfaces. These characteristics are achieved through the solvent-free transfer of quantum dot films and the compact structure of the quantum dot networks. Significant enhancements in charge transport/balance in the quantum dot layer improve electroluminescent performance. A method using plasmonic coupling is also suggested to further enhance luminous efficiency. The results suggest routes towards creating large-scale optoelectronic devices in displays, solid-state lighting and photovoltaics.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 1749-4885
    EISSN: 1749-4893
    DOI: 10.1038/nphoton.2011.12
  • Source: ProQuest Central
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