P‐88: Efficiency Improvement of Top‐Emission Green Quantum‐Dot Light‐Emitting Diode with Dielectric‐Metal‐Dielectric Cathode

Lin, Bo‐Yen; Chen, Chia‐Hsun; Lin, Kun-Rong; Lee, Chun-Yu; Chiu, Tien‐Lung; Lee, Jiun-Haw

doi:10.1002/sdtp.15763

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Compared with the BE device, the integrated emission enhancement due to the microcavity effect achieves 2.9. Remarkably, the optimized device exhibits the highest luminance intensity for green QLED and outperforms any previously reported QLED in current efficiency 7,21,[30][31][32][33] , which is important in augmented reality, virtual reality, and outdoor displays.…”

Section: Qled Performancementioning

confidence: 68%

Ultrabright and stable top-emitting quantum-dot light-emitting diodes with negligible angular color shift

Li,

et al. 2024

Nat Commun

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Top emission can enhance luminance, color purity, and panel-manufacturing compatibility for emissive displays. Still, top-emitting quantum-dot light-emitting diodes (QLEDs) suffer from poor stability, low light outcoupling, and non-negligible viewing-angle dependence because, for QLEDs with non-red emission, the electrically optimum device structure is incompatible with single-mode optical microcavity. Here, we demonstrate that by improving the way of determining reflection penetration depths and creating refractive-index-lowering processes, the issues faced by green QLEDs can be overcome. This leads to advanced device performance, including a luminance exceeding 1.6 million nits, a current efficiency of 204.2 cd A−1, and a T95 operational lifetime of 15,600 hours at 1000 nits. Meanwhile, our design does not compromise light outcoupling as it offers an external quantum efficiency of 29.2% without implementing light extraction methods. Lastly, an angular color shift of Δu’v’ = 0.0052 from 0° to 60° is achieved by narrowing the emission linewidth of quantum dots.

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Section: Qled Performancementioning

confidence: 68%

Ultrabright and stable top-emitting quantum-dot light-emitting diodes with negligible angular color shift

Li,

et al. 2024

Nat Commun

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“…This methodology enhanced the current efficiency by suppressing the viewing angle dependence and color shift. Furthermore in 2022, Lin et al 24 introduced Yb (ytterbium) as cathode blocking layer which refined the thermal stability of TEOLEDs. The element Yb inhibits the migration of Ag atoms in cathode layer at high temperature.…”

Section: Classification Of Oledmentioning

confidence: 99%

Review—Advancements and Perspectives of Organic LED: In Depth Analysis of Architectural Design, Characteristics Parameters, Fabrication Techniques, and Applications

Yadav

Mittal

Negi

2023

ECS J. Solid State Sci. Technol.

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This article presents a review on various aspect of organic light emitting diodes (OLEDs), such as their working, various categorization, impact of fabrication methodologies (organic vapor phase deposition, vacuum thermal evaporation, inkjet printing etc.) that are low-cost and their applications in serval domains like medical, sensor, display, lighting etc. Three categorizations of OLED are discussed with respect to circuit, architecture and color of emission. Different layers of multi-layered structures such as injection layer, transport layer, block layers are also reviewed and their impacts are analyzed and compared. Moreover, an experimental fabrication technique for flexible substrate is reviewed that highlights low-cost fabrication method. In this technique, dynamic viscosity and contact angle are measured using rotational viscometer and contact angle meter, respectively. The result illustrates sheet resistance and effective opening ratio of 3.8 ohms per square and 82.5%, correspondingly. Additionally, various performance parameters like luminescence, external quantum efficiency, and current efficiency are compared. The paper also incorporates recent advancement in organic thin film transistors along with some OTFT driven OLED devices.

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Architectural design, fabrication techniques, characteristics parameters and different applications for OLED along with some OTFT driven OLEDs: A review

Yadav

Mittal

Negi

2024

MGC

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In consumer electronics, Organic LED (OLED) has become mainstream display technology. Using organic materials, opto-electronics devices have become extensively desirable for various reasons. One of the fundamental properties i.e., flexibility permits to fabricate electronic circuits on flexible substrates to make these devices bendable and stretchable. This paper provides a review on various terms of OLED like fabrication methods, operation of OLED, its categorization, few OTFT driven OLEDs, stability issues of white OLED and various applications of OLED based on sensors, display, and lighting. Different lighting devices like incandescent bulb, tube light, CFL, LED and OLED are compared on the basis of their efficiency and lifetime. The comparison highlights that the LED provides good lifetime, however, for OLED it depends on the organic semiconducting materials responsible for emission. Different layers such as charge injection layers, transport layers and blocking layer to refine the properties of organic LEDs are also studied and compared. Addition to this, a low-cost methodology is also incorporated for the fabrication of flexible devices.

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P‐88: Efficiency Improvement of Top‐Emission Green Quantum‐Dot Light‐Emitting Diode with Dielectric‐Metal‐Dielectric Cathode

Cited by 3 publications

References 5 publications

Ultrabright and stable top-emitting quantum-dot light-emitting diodes with negligible angular color shift

Ultrabright and stable top-emitting quantum-dot light-emitting diodes with negligible angular color shift

Review—Advancements and Perspectives of Organic LED: In Depth Analysis of Architectural Design, Characteristics Parameters, Fabrication Techniques, and Applications

Architectural design, fabrication techniques, characteristics parameters and different applications for OLED along with some OTFT driven OLEDs: A review

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