Investigating the Dynamics of Quantum Dot based Light-emitting Diodes with different emission wavelength

Langenickel, Joern; Weis, Alexander L.; Martin, Joerg; Otto, Thomas; Kühn, Harald

doi:10.1109/ssi52265.2021.9466960

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2024

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“…Quantum dot (QD) based light-emitting diodes (LEDs) have emerged as a promising technology due to their high brightness, tunable emission spectra, and low power consumption [1][2][3] for various application fields. 4,5 Compared to organic emitters, the intrinsic spectra reached by emitting QD films can be significantly narrowed. But, the spectral and angular width of the QD-LEDs emission pattern might still be too large for sensing and lighting applications, along with the continuous search for improved outcoupling appraoches 6 to increase the external efficiency of the device.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of quantum dot based LEDs with enhanced emission properties by micro cavities

Langenickel,

Rodríguez,

Martin

et al. 2024

Light-Emitting Devices, Materials, and Applications XXVIII

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This paper presents a novel approach to enhance the performance of Quantum dot (QD) based light-emitting diodes (LEDs) by incorporating Bragg resonator substrates. By depositing QD-LED layer stacks on tailored Bragg resonator substrates, the emission spectrum of red-emitting QD-LEDs is narrowed to less than 20 nm, and the emission pattern becomes more directional. Additionally, the modulation characteristics of QD-LEDs on Bragg-substrates are investigated. These findings demonstrate the potential to improve the usability of QD-LEDs in displays, lighting, and sensing applications.

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