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Emergence of colloidal quantum-dot light-emitting technologies

Nature photonics, 2013-01, Vol.7 (1), p.13-23 [Peer Reviewed Journal]

Copyright Nature Publishing Group Jan 2013 ;ISSN: 1749-4885 ;EISSN: 1749-4893 ;DOI: 10.1038/nphoton.2012.328

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  • Title:
    Emergence of colloidal quantum-dot light-emitting technologies
  • Author: Shirasaki, Yasuhiro ; Supran, Geoffrey J ; Bawendi, Moungi G ; Bulovic, Vladimir
  • Subjects: Colloids ; Color ; Colour ; Devices ; Illumination ; Lighting ; Quantum dots ; solar (photovoltaic), solid state lighting, photosynthesis (natural and artificial), charge transport, optics, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing) ; Strategy
  • Is Part Of: Nature photonics, 2013-01, Vol.7 (1), p.13-23
  • Description: Since their inception 18 years ago, electrically driven colloidal quantum-dot light-emitting devices (QD-LEDs) have increased in external quantum efficiency from less than 0.01% to around 18%. The high luminescence efficiency and uniquely size-tunable colour of solution-processable semiconducting colloidal QDs highlight the potential of QD-LEDs for use in energy-efficient, high-colour-quality thin-film display and solid-state lighting applications. Indeed, last year saw the first demonstrations of electrically driven full-colour QD-LED displays, which foreshadow QD technologies that will transcend the optically excited QD-enhanced lighting products already available today. We here discuss the key advantages of using QDs as luminophores in LEDs and outline the operating mechanisms of four types of QD-LED. State-of-the-art visible-wavelength LEDs and the promise of near-infrared and heavy-metal-free devices are also highlighted. As QD-LED efficiencies approach those of molecular organic LEDs, we identify the key scientific and technological challenges facing QD-LED commercialization and offer our outlook for on-going strategies to overcome these challenges.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 1749-4885
    EISSN: 1749-4893
    DOI: 10.1038/nphoton.2012.328
  • Source: AUTh Library subscriptions: ProQuest Central
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