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Nanostructured colloidal quantum dots for efficient electroluminescence devices

  • Invited Review Paper
  • Published:
Korean Journal of Chemical Engineering Aims and scope Submit manuscript

Abstract

The exceptional quality of light generated from colloidal quantum dots has attracted continued interest from the display and lighting industry, leading to the development of commercial quantum dot displays based on the photoluminescence down-conversion process. Beyond this technical level, quantum dots are being introduced as emissive materials in electroluminescence devices (or quantum dot-based light-emitting diodes), which boast high internal quantum efficiency of up to 100%, energy efficiency, thinness, and flexibility. In this review, we revisit various milestone studies regarding the core/shell heterostructures of colloidal quantum dots from the viewpoint of electroluminescence materials. Development of nanostructured colloidal quantum dots advanced from core/shell heterostructure, core/thick shell formulation, and delicate control of confinement potential shape has demonstrated close correlation of the photophysical properties of quantum dots with the performance of electroluminescence device, which provided useful guidelines on the heterostructured quantum dots for mitigating or eliminating efficiency limiting phenomena in quantum dot light emitting diodes. To enable practical and high performance quantum dot-based electroluminescence devices in the future, integration of design concepts on the heterostructures with environmentally benign systems will be crucial.

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Authors and Affiliations

  1. SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Korea

    Wan Ki Bae

  2. Department of Chemical Engineering & Department of Energy System Research, Ajou University, Suwon, Gyeonggi-do, 16499, Korea

    Jaehoon Lim

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  1. Wan Ki Bae
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Correspondence to Jaehoon Lim.

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Jaehoon Lim is Assistant Professor within the department of chemical engineering and the department of energy system research in Ajou University, South Korea. He obtained B.S. (2007) and Ph. D. (2013) in Chemical and Biological Engineering from Seoul National University. He conducted postdoctoral research work within the Department of Electrical Engineering and Computer Science at Seoul National University (2013-2014) and within the Chemistry Division of Los Alamos National Laboratory (2013-2017). His current research centers on the synthesis and characterization of colloidal semiconductor nanocrystals and their applications in light-emitting diodes, lasing, solar energy conversion, and sensing.

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Bae, W.K., Lim, J. Nanostructured colloidal quantum dots for efficient electroluminescence devices. Korean J. Chem. Eng. 36, 173–185 (2019). https://doi.org/10.1007/s11814-018-0193-7

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  • DOI: https://doi.org/10.1007/s11814-018-0193-7

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