Recent advances in flexible organic light-emitting diodes

Xu, Ruipeng; Li, Yanqing

doi:10.1039/c6tc03230c

Cited by 268 publications

(176 citation statements)

References 225 publications

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“…During the past two (plus) decades, organic light-emitting diodes (OLEDs) have been extensively studied as potential devices for full-color flat-panel displays and lighting sources [1][2][3][4][5]. OLEDs have attracted a great deal of interest and possess the potential to replace the traditional inorganic technology.…”

Section: Introductionmentioning

confidence: 99%

Thermally Activated Delayed Fluorescence Emitters for Deep Blue Organic Light Emitting Diodes: A Review of Recent Advances

et al. 2018

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Organic light-emitting diodes offer attractive perspectives for the next generation display and lighting technologies. The potential is huge and the list of potential applications is almost endless. So far, blue emitters still suffer from noticeably inferior electroluminescence performances in terms of efficiency, lifespan, color quality, and charge injection/transport when compared to that of the other colors. Emitting materials matching the NTSC standard blue of coordinates (0.14, 0.08) are extremely rare and still constitutes the focus of numerous academic and industrial researches. In this context, we review herein the recent developments on highly emissive deep-blue thermally activated delayed fluorescence emitters that constitute the third-generation electroluminescent materials.

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Section: Introductionmentioning

confidence: 99%

Thermally Activated Delayed Fluorescence Emitters for Deep Blue Organic Light Emitting Diodes: A Review of Recent Advances

et al. 2018

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“…In this work, we propose to apply curving techniques to OLED‐based microdisplays in such a way that display optics, or optical engine, footprints can be reduced, in the meantime improving the FOV of the system as well as the image quality. With regard to bendability, the influence of thin film OLED amorphous layers can be neglected, and the performance of OLED layers themselves is not expected to vary as this has already been shown numerous times for flexible OLED displays . The overall goal is to reduce the total thickness of the microdisplay's Si substrate using a mechanical grinding process.…”

Section: Introductionmentioning

confidence: 99%

Curved OLED microdisplays

et al. 2019

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Technical background for CMOS substrate thinning of CEA‐LETI (historically developed for through silicon via technology as well as for more recent activity to provide curved image sensors, for IR as well as for visible spectra) has been applied to realize curved OLED‐based microdisplays. It will be shown that test OLEDs made onto silicon wafers as well as 873 × 500 WVGA, 0.38″ diagonal, and an innovative 1920 × 1200 WUXGA, 1″diagonal, CMOS‐based microdisplays can be curved at R = 45 mm radius of curvature (1D) with no negative impact onto the circuit electrical characteristics. This feature can allow significant innovation on the system and application because it can help to redesign simpler and lighter optical engine systems, in the same manner as for curved image sensors. These results can be obtained owing to the integration of a new protective hard coat layer that has been used in conjunction with a robust thin‐film encapsulation to protect OLEDs from mechanical ingress (from process steps and handling) and oxidizing gas of the atmosphere, respectively. Results have been produced within the framework of the EU‐funded, H2020 project, called Large cost‐effective OLED MIcroDisplays (LOMID and their applications).

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“…Polymeric materials with unique combination of both electrochemical and optical properties have attracted tremendous technological interest in the past few decades due to increasing need for stability, low cost, structural flexibility, and process ability. Various designing methods have been employed to achieve efficient semiconducting properties in polymers with potential applications in the field of optical storage media, photorefractive devices, photovoltaic devices, light emitting diodes, and many other photonic systems. Numerous reports are available in the literature about the synthesis for optoelectronic properties of conjugated polymers and systems .…”

Section: Introductionmentioning

confidence: 99%

“…Various designing methods have been employed to achieve efficient semiconducting properties in polymers with potential applications in the field of optical storage media, photorefractive devices, photovoltaic devices, light emitting diodes, and many other photonic systems. Numerous reports are available in the literature about the synthesis for optoelectronic properties of conjugated polymers and systems . However, less attention was given to non‐conjugated polymers, the semiconducting property of which is based on the charge hopping from one localized site to another in the direction of optoelectronic field.…”

Section: Introductionmentioning

confidence: 99%

Optical, electrochemical, and thermal behavior of polybenzoxazine copolymers incorporated with tetraphenylimidazole and diphenylquinoline

Arumugam

Kesava

Alagar³

et al. 2017

Polymers for Advanced Techs

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Two new polybenzoxazine copolymers were synthesized by polymerizing conventional benzoxazine monomer with varying weight percentage of tetraphenylimidazole and diphenylquinoline.The tetrasubstituted imidazole was synthesized through Debus-Radziszewski imidazole synthesis method, and quinoline derivative was synthesized through Friedlander quinoline synthesis, and their structure was confirmed through FTIR, 1 HNMR, and MASS spectral analysis. New polybenzoxazine copolymers were synthesized by polymerizing conventional benzoxazine monomer with varying weight percentage of (10, 20, and 30%) of phenolic tetraphenylimidazole and diphenylquinoline. The polybenzoxazines cocured with 10, 20, and 30 wt% of imidazole derivative showed a band gap of 2.27, 2.08, and 2.2 eV, respectively, and the quinoline derivative incorporated at 10, 20, and 30 wt% in to polybenzoxazines exhibited a band gap of 2.26, 2.3, and 2.03 eV, respectively. The polybenzoxazines cocured with phenolic imidazoles and quinolines have high glass transition and thermal degradation stability in addition to significant improvement in optical and electrochemical properties than that of conventional bisphenol-based polybenzoxazines.

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Recent advances in flexible organic light-emitting diodes

Abstract: This review summarizes the recent achievements in flexible OLEDs involving transparent conductive electrodes, device fabrication, light extraction technologies, as well as encapsulation methods.

Cited by 268 publications

References 225 publications

Thermally Activated Delayed Fluorescence Emitters for Deep Blue Organic Light Emitting Diodes: A Review of Recent Advances

Thermally Activated Delayed Fluorescence Emitters for Deep Blue Organic Light Emitting Diodes: A Review of Recent Advances

Curved OLED microdisplays

Optical, electrochemical, and thermal behavior of polybenzoxazine copolymers incorporated with tetraphenylimidazole and diphenylquinoline

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