6‐3: Quantum Dot LEDs: Problems &amp; Prospects

Titov, Alexandre; Acharya, Krishna Prasad; Wang, Chenggong; Hyvonen, Jake; Tokarz, Jean; Holloway, Paul H.

doi:10.1002/sdtp.11556

Cited by 10 publications

(10 citation statements)

References 5 publications

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“…For semiconductor‐based LED, η inj is mainly affected by doping (like GaN LED), whereas for the OLED and QLED, it is mainly affected by modulating carriers’ transport layer (like ETL of OLED and QLED). [ 44 ] After injection, the carriers undergo the recombination process. Depending on the recombination channel, the recombination could be either radiative or nonradiative (e.g., Auger recombination and polyphonic recombination).…”

Section: Fundamental Mechanisms Of Nanoantenna‐enhanced Ledmentioning

confidence: 99%

Nanoantenna‐Enhanced Light‐Emitting Diodes: Fundamental and Recent Progress

Wang

et al. 2021

Laser & Photonics Reviews

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Light‐emitting diodes (LEDs) are a promising solution for energy‐saving illumination, terminal display technology, and visible light communication. Driven by the vast markets of these emergent applications, the everlasting demand for LED devices is to continuously improve the luminous efficiency and lifetime while minimizing costs. The luminous efficiency of LEDs can be improved from various perspectives including materials, nanofabrication, encapsulation, and other fields, mainly to increase the internal quantum efficiency of the active layer, the light extraction efficiency, the directionality of luminous emission, and the photoluminescence of color‐converting layer. A nanoantenna is a delicately designed functional structure with strong capabilities in decay rate enhancement, light regulation, and other unique optical and electrical characteristics, which fully meet the needs of LED emission enhancement. Starting from the mechanism of nanoantennas, how to enhance LEDs by nanoantennas made of metals, dielectrics, and mixtures of both is discussed. By considering some practical cases, the review of the enhanced functionalities of LEDs under the function of nanoantenna are provided. On top of that, the great potential of nanoantennas for the use in micro‐ and nanostructures, layered structures, and other new LED geometries, and for the active control of LEDs using reprogrammable nanoantennas is also put forward.

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Section: Fundamental Mechanisms Of Nanoantenna‐enhanced Ledmentioning

confidence: 99%

Nanoantenna‐Enhanced Light‐Emitting Diodes: Fundamental and Recent Progress

Wang

et al. 2021

Laser & Photonics Reviews

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“…Colloidal quantum dot light-emitting diodes (QLEDs) have drawn much attention due to its unique properties (i.e. tunable color emission spectrum, narrow emission bandwidth and low driving voltage, simple fabrication process) and these advantages make QLED be considered a candidate for next generation display technology [1][2][3][4][5][6][7][8][9][10][11]. For real application, the device performance is important.…”

Section: Objective and Backgroundmentioning

confidence: 99%

65‐3: Green Top‐emission Quantum Dot Light‐emitting Diodes (TE‐QLED) with Normal and Inverted Structure

Lin

Lee

Ding

et al. 2020

Symp Digest of Tech Papers

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In this work, green top emission quantum dot light-emitting diodes with different structure, that are normal and inverted structure, were demonstrated. The device characterization of these two device are compared. The QLED with inverted structure exhibits better device performance than normal one. Current efficiency is improved from 26.9 to 42.5 cd/A, as well as the external quantum efficiency is improved from 5.32 to 9.42 %. Operational lifetime of inverted structure is longer and more reliable than normal structure by ~10-times.

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“…Quantum-dot light-emitting-diode (QLED) is a promising display technology and has attracted lots of attention due to its superior properties of high color purity [1,2]. Recently, red and green QLED is catching up to OLED in efficiency.…”

Section: Introductionmentioning

confidence: 99%

65‐4: Investigation on Blue Quantum‐Dot Light‐Emitting Diode with Positive Aging Treatment

Lin

Chen

Ding

et al. 2021

Symp Digest of Tech Papers

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We have demonstrated a high efficiency blue quantum‐dot light‐emitting diode (QLED) with positive aging treatment. While device was statically stored 602 hrs, the external quantum efficiency (EQE) of QLED increased from 4.8% to 7.8%, which resulted from the enhancement in electron injection at quantum dot (QD)/ electron transporting layer (ETL) interface. It was confirmed by the measurement of the depth profile of X‐ray photoelectron spectroscopy (XPS). It indicated that cathode material, aluminum (Al), diffused into ETL material, zinc oxide (ZnO), leading to aluminium zinc oxide (AZO) alloy, Al doped ZnO.

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6‐3: Quantum Dot LEDs: Problems & Prospects

Cited by 10 publications

References 5 publications

Nanoantenna‐Enhanced Light‐Emitting Diodes: Fundamental and Recent Progress

Nanoantenna‐Enhanced Light‐Emitting Diodes: Fundamental and Recent Progress

65‐3: Green Top‐emission Quantum Dot Light‐emitting Diodes (TE‐QLED) with Normal and Inverted Structure

65‐4: Investigation on Blue Quantum‐Dot Light‐Emitting Diode with Positive Aging Treatment

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