Advancing brightness in colloidal quantum dot-based light-emitting diodes beyond boundaries of displays

Taesoo Lee; Byong Jae Kim; Hyunkoo Lee; Donghyo Hahm; Wan Ki Bae; Jaehoon Lim; Jeonghun Kwak

doi:10.1117/12.3000673

13 March 2024 Advancing brightness in colloidal quantum dot-based light-emitting diodes beyond boundaries of displays

Taesoo Lee, Byong Jae Kim, Hyunkoo Lee, Donghyo Hahm, Wan Ki Bae, Jaehoon Lim, Jeonghun Kwak

Proceedings Volume 12906, Light-Emitting Devices, Materials, and Applications XXVIII; 1290605 (2024) https://doi.org/10.1117/12.3000673
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Colloidal quantum dot (QD)-based light-emitting diodes (QLEDs) have achieved peak efficiency comparable to organic light-emitting diodes and are now poised for the development of full-color displays. Simultaneously, the potential of QLEDs is being explored for lasers, AR/VR, lighting, and industrial light sources demanding extended brightness. This study focuses on comprehensive strategies to enhance the brightness of QLEDs beyond the boundary of conventional display applications. Introduction of graded confinement potential into core/shell heterostructured QDs successfully mitigated nonradiative Auger recombination of charged or multiexcitons, often generated under high current density. A tailored top-emission device architecture on Si substrates enabled to extend the range of operational current over 10 A/cm2 . Our QLEDs achieved high brightness (>50 mW) comparable to class-3B lasers.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Taesoo Lee, Byong Jae Kim, Hyunkoo Lee, Donghyo Hahm, Wan Ki Bae, Jaehoon Lim, and Jeonghun Kwak "Advancing brightness in colloidal quantum dot-based light-emitting diodes beyond boundaries of displays", Proc. SPIE 12906, Light-Emitting Devices, Materials, and Applications XXVIII, 1290605 (13 March 2024); https://doi.org/10.1117/12.3000673

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