P‐170: Organic Light‐Emitting Diodes Incorporating a Novel Exciplex‐Forming Host: A Synergistic Strategy to Design Highly Simplified OLEDs for Application

Xu, Ting; Zhang, Ye-Xin; Murtaza, Imran; Meng, Hong

doi:10.1002/sdtp.12004

Cited by 9 publications

(6 citation statements)

References 9 publications

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“…A main challenge is creating blue emitters with high color purity, as traditional fluorescent and phosphorescent blue emitters often exhibit broad spectra, compromising color purity [4]. Thus research has redirected towards emitters with narrow-band emission, which needs evaluation through optical simulations [5,[8][9][10][11][12]. In recent years, multi-resonance thermally activated delayed fluorescence (MR-TADF) materials have shown promise for narrow-band blue OLEDs.…”

Section: Introductionmentioning

confidence: 99%

P‐15.1: Optical Modeling Simulation and Experiment of Narrow‐Band Emission Tandem OLEDs, Solution‐Processed Hole Injection/Transport OLEDs and Organic Light Emitting Transistors

Xu,

Zhao,

Dong

et al. 2024

Symp Digest of Tech Papers

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This study shows the investigations of Multi‐resonance thermally activated delayed fluorescence (MR‐TADF) materials and solution‐processed holes injection/transport layers (HITLs) in organic light‐emitting diodes (OLEDs), while extending to Organic Light Emitting Transistors (OLETs). Firstly, we explore TBN‐TPA, a blue MR‐TADF material, in single‐unit and tandem OLEDs via optical simulation. The tandem architecture enhances color purity, achieving a narrow full width at half maximum down to 24 nm, thus meeting BT 2020 standards. This marks the first instance of tandem OLEDs improving both efficiency and color performance of a multi‐resonance TADF emitter. Concurrently, we investigate the regulation of solution‐processed HITL compositions in OLEDs, aiming to improve charge injection and optical waveguiding. The adoption of solution‐processed HITLs reduces the turn‐on voltage and enhances power efficiency by 8.81% at a brightness of 5000 cd/m2 compared to vacuum‐deposited HITLs. By adjusting the composition of solution‐based PEDOT:PSS/TAPC as HITL, we effectively mitigate hole injection barriers and improve surface morphology, establishing an optical waveguide within the OLED structure. This holistic investigation employs optical simulation to advance high‐performance and cost‐effective OLEDs and OLETs for lighting and displays.

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Section: Introductionmentioning

confidence: 99%

P‐15.1: Optical Modeling Simulation and Experiment of Narrow‐Band Emission Tandem OLEDs, Solution‐Processed Hole Injection/Transport OLEDs and Organic Light Emitting Transistors

Xu,

Zhao,

Dong

et al. 2024

Symp Digest of Tech Papers

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“…Organic light-emitting diodes (OLEDs) are considered and applied as a feasible technology in high-quality display, solid-state lighting sources (SSLs), and near-infrared (NIR) applications, owing to the excellent advantages including high efficiency, low power consumption, and flexibility. ( Baek et al, 2020 ; Helander et al, 2011 ; Wang et al, 2011 ; Wang et al, 2020 ; Xu et al, 2017 ; Greiner et al, 2012 ; Zheng et al, 2013 ; Xu et al, 2021a ). Nevertheless, previous studies usually adopted complicated fabricated processes and device structures of OLEDs, which impede the popularizing of this promising technology.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Structure and Energy Transfer Process of Undoped Ultrathin Emitting Nanolayers Within Interface Exciplexes

Wang

et al. 2022

Front. Chem.

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Organic light-emitting diodes (OLEDs) have great potential for display, lighting, and near-infrared (NIR) applications due to their outstanding advantages such as high efficiency, low power consumption, and flexibility. Recently, it has been found that the ultrathin emitting nanolayer technology plays a key role in OLEDs with simplified structures through the undoped fabricated process, and exciplex-forming hosts can enhance the efficiency and stability of OLEDs. However, the elementary structure and mechanism of the energy transfer process of ultrathin emitting nanolayers within interface exciplexes are still unclear. Therefore, it is imminently needed to explore the origin of ultrathin emitting nanolayers and their energy process within exciplexes. Herein, the mechanism of films growing to set ultrathin emitting nanolayers (<1 nm) and their energy transfer process within interface exciplexes are reviewed and researched. The UEML phosphorescence dye plays a key role in determining the lifetime of excitons between exciplex and non-exciplex interfaces. The exciplex between TCTA and Bphen has longer lifetime decay than the non-exciplex between TCTA and TAPC, facilitating exciton harvesting. The findings will be beneficial not only to the further development of OLEDs but also to other related organic optoelectronic technologies.

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“…Solution-processed organic light-emitting diodes (s-OLEDs) are regarded as one of the most fascinating and competitive technologies for large-area and low-cost display panels and solid-state lighting sources (Müller et al, 2003;So et al, 2008;Zhu et al, 2011;Sasabe and Kido, 2013;Zheng et al, 2013;Xu et al, 2017a;Xu et al, 2019;Wang et al, 2020;Xu et al, 2021). Modern electronic products can be easily manufactured by ink-jet printing or 'roll-to-roll' coating methods, akin to how newspapers are produced.…”

Section: Introductionmentioning

confidence: 99%

Solution-Processed Pure Blue Thermally Activated Delayed Fluorescence Emitter Organic Light-Emitting Diodes With Narrowband Emission

Liang

Xie

2021

Front. Chem.

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There is a need to satisfy the high color purity requirement of display technology with a simply fabricated process. Herein, solution-processed blue thermally activated delayed fluorescence organic light-emitting diodes (OLEDs) with a narrow spectrum with a full width at half maximum (FWHM) of 32 nm and y color coordinate below 0.2 are demonstrated by employing a molecule containing boron and nitrogen atoms (TBN-TPA) as the guest emitter in the emissive layer. The opposite resonance positions of B-N atoms of TBN-TPA endows a multi-resonance effect, leading to high color purity.

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P‐170: Organic Light‐Emitting Diodes Incorporating a Novel Exciplex‐Forming Host: A Synergistic Strategy to Design Highly Simplified OLEDs for Application

Cited by 9 publications

References 9 publications

P‐15.1: Optical Modeling Simulation and Experiment of Narrow‐Band Emission Tandem OLEDs, Solution‐Processed Hole Injection/Transport OLEDs and Organic Light Emitting Transistors

P‐15.1: Optical Modeling Simulation and Experiment of Narrow‐Band Emission Tandem OLEDs, Solution‐Processed Hole Injection/Transport OLEDs and Organic Light Emitting Transistors

Understanding the Structure and Energy Transfer Process of Undoped Ultrathin Emitting Nanolayers Within Interface Exciplexes

Solution-Processed Pure Blue Thermally Activated Delayed Fluorescence Emitter Organic Light-Emitting Diodes With Narrowband Emission

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