A Novel Lighting OLED Panel Design

Zhang, Enyang; Xia, Weigao; Yan, Xiaogang

doi:10.3390/molecules21121615

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…10,11 New design of WOLEDs which allows to decrease the number of photolithographic cycles and to reduce the production cost is discussed in work. 12 Materials for highly effective phosphorescent OLEDs with low working voltage are described in the review. 13 Organic materials with nonlinear optical properties are presented.…”

Section: Introductionmentioning

confidence: 99%

Functionalized benzazines as luminescent materials and components for optoelectronics

Носова¹,

Achelle²,

Lipunova³

et al. 2019

Russ. Chem. Rev.

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Extensive research on the synthesis and application of benzazine derivatives for electronic devices, luminescent elements, photoelectric conversion elements, and image sensors has been published recently. In the frames of this review article data obtained within the period 2012−2018 on the synthesis and optical properties of functionalized quinolines, quinoxalines and quinazolines are considered. Arylvinyl-, arylethynyl-and (het)arylderivatives of these benzazines, their photoluminescence and photoisomerisation are discussed. Examples of photosensitive annelated, oligo-and polymeric benzazines and also coordination compounds with benzazine ligands are reviewed.

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Section: Introductionmentioning

confidence: 99%

Functionalized benzazines as luminescent materials and components for optoelectronics

Носова¹,

Achelle²,

Lipunova³

et al. 2019

Russ. Chem. Rev.

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show abstract

“…Global lighting market is in the middle of a major portfolio change from conventional lighting techniques to versatile state-of-the-art true color devices. So far, this scenario has been ushered by organic light-emitting diodes (OLEDs), and thus the development of OLEDs is becoming the prime focus of research based on solid state luminaires. , In the context of cost, the closest alternative to replace OLEDs are light-emitting electrochemical cells (LECs). − The majority of recent striking reports on LECs are targeted at developing organic molecules as functional materials. To this end, a wide variety of organic molecules have been used to fuel LEC devices. − However, a generalized approach to cast molecules for LEC applications still needs rational molecular design.…”

Section: Introductionmentioning

confidence: 99%

“…So far, this scenario has been ushered by organic light-emitting diodes (OLEDs), and thus the development of OLEDs is becoming the prime focus of research based on solid state luminaires. 1,2 In the context of cost, the closest alternative to replace OLEDs are light-emitting electrochemical cells (LECs). 3−6 The majority of recent striking reports on LECs are targeted at developing organic molecules as functional materials.…”

Section: ■ Introductionmentioning

confidence: 99%

Blue Light-Emitting Electrochemical Cells Based on Angularly Structured Phenanthroimidazole Derivatives

2017

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Photophysical properties of four new ionic blue emitting phenanthroimidazole derivatives were investigated. Rarely utilized meta and ortho positions of C2 substituted benzene linker of phenanthroimidazole were functionalized herein to generate blue emitters for light-emitting electrochemical cell (LEC) applications. To this end, pyrene and anthracene units were coupled to phenanthroimidazole core through meta or ortho linkage. This molecular design strategy is anticipated to generate deeper blue emission than the corresponding para isomers due to lack of extended conjugation. Highly contrasting properties were observed between ortho- and meta-coupled fluorophores. Unexpectedly, solubility issues hinder the application of ortho-linked molecules in LEC devices. However, bright blue emissions were achieved in LEC devices when meta derivatives were mixed in the active layer of LEC with poly(ethylene oxide) and lithium triflate. Notably, the molecule having pyrene and phenanthroimidazole coupled through meta linkage (mPy) presented the best performance. It was identified that a fundamental trade off exists between efficiency and brightness for these tricomponent devices when the ion concentration is increased. Efficient device (device 3, maximum efficiency = 0.43 cdA–1) was the one with low amount of ions, whereas the bright one (device 5, maximum brightness = 585 cdm–2) had high ion concentrations. However, the performances of all of the tricomponent devices were reasonably high in comparison to their single component devices. In addition, modulation of charge transfer band was found feasible for these investigated molecules by switching the linking position, which provides us with an imperative clue to design ideal blue emitters for LEC applications incorporating pyrene and phenanthroimidazole units.

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Anti‐Smudge Organic Afterglow Panels

Zhai,

Mo,

Yan

et al. 2024

Adv Funct Materials

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Organic afterglow panels show promising applications in display and information anti‐counterfeiting. Like other panels, organic afterglow panels are susceptible to contamination when used, which can affect their aesthetics and clarity. Here, a kind of visible‐light‐excitable anti‐smudge organic afterglow panels based on a dopant‐matrix strategy and easily prepared through the UV light‐curing method is reported. The phosphorescence lifetime of the panel is up to 9.45 s with an afterglow duration longer than 100 s. Moreover, the transparent panels with low dynamic friction (0.129), large water contact angle (108°) and oleic acid contact angle (77°), display high performance of anti‐smudge, water and oil repellency, and removability of fingerprints, avoiding the influence of ink or sewage on its aesthetics and clarity. This study will expand the pathways for practical applications of afterglow materials.

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A Novel Lighting OLED Panel Design

Cited by 6 publications

References 13 publications

Functionalized benzazines as luminescent materials and components for optoelectronics

Functionalized benzazines as luminescent materials and components for optoelectronics

Blue Light-Emitting Electrochemical Cells Based on Angularly Structured Phenanthroimidazole Derivatives

Anti‐Smudge Organic Afterglow Panels

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