High performance red phosphorescent organic electroluminescent devices with characteristic mechanisms by utilizing terbium or gadolinium complexes as sensitizers

2017 ◽  
Vol 5 (8) ◽  
pp. 2066-2073 ◽  
Author(s):  
Rongzhen Cui ◽  
Weiqiang Liu ◽  
Liang Zhou ◽  
Xuesen Zhao ◽  
Yunlong Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Electroluminescent Devices ◽  
Light Emitting ◽  
Organic Light ◽  
Gadolinium Complexes ◽  
Organic Electroluminescent ◽  
High Color Purity

High performance sensitized organic light-emitting diodes with high color purity were obtained by utilizing terbium or gadolinium complexes as sensitizers.

Efficient deep-blue organic light-emitting diodes with low driving voltage and high color purity

2021 ◽  
Vol 115 ◽  
pp. 111044
Author(s):  
Kai Chen ◽  
Liang Zhou ◽  
Xuesen Zhao ◽  
Qi Zhu ◽  
Ruixia Wu ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Driving Voltage ◽  
Color Purity ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
High Color Purity

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

2021 ◽  
Vol 9 ◽  
Author(s):  
Ting Xu ◽  
Xiao Liang ◽  
Guohua Xie
Keyword(s):  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
High Color Purity

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.

Enhanced Performance of Organic Light Emitting Diodes Using LiF Buffer Layer

2009 ◽  
Vol 1154 ◽  
Author(s):  
Omkar Vyavahare ◽  
Richard Hailstone
Keyword(s):  
Buffer Layer ◽  
Light Emitting Diodes ◽  
Charge Injection ◽  
Organic Light Emitting Diodes ◽  
Electroluminescent Devices ◽  
Light Emitting ◽  
Organic Light ◽  
Organic Interfaces ◽  
Organic Electroluminescent

AbstractSince the invention of organic electroluminescent devices, a great deal of effort has been made to improve their performance. Reducing the barrier and optimizing charge injection is crucial for efficient and bright Organic Light Emitting Diodes (OLEDs). We report the performance of OLEDs with ITO/TPD/Alq3/Al structure by inserting LiF both at electrode-organic interfaces and organic-organic interface. We elucidate the mechanism of the LiF buffer layer inserted at different interfaces. The device with LiF as a cathode injection layer shows improved luminescence and steeper IV characteristics.

High-Color-Purity Organic Light-Emitting Diodes Incorporating a Cyanocoumarin-Derived Red Dopant Material

2008 ◽  
Vol 155 (12) ◽  
pp. J365 ◽  
Author(s):  
Mei-Ying Chang ◽  
Yu-Kai Han ◽  
Chih-Chia Wang ◽  
Shih-Chin Lin ◽  
Yi-Jan Tsai ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Light Emitting ◽  
Organic Light ◽  
High Color Purity

Organic EL Devices with Bis-Diphenylquinoxaline as ET Material

2011 ◽  
Vol 250-253 ◽  
pp. 4034-4037 ◽  
Author(s):  
Ting Xi Li ◽  
Su Su Gao ◽  
Peng Sui ◽  
Na Kong ◽  
Shasha Wu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Elemental Analysis ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Transmission Performance ◽  
Electroluminescent Devices ◽  
Light Emitting ◽  
Organic Light ◽  
Electron Transporting Layer ◽  
Organic Electroluminescent

A new compound, 2,3,2',3'-Tetraphenyl-[6,6']-biquinoxalinyl was synthesized. Its structure was determined by mass spectrometry and elemental analysis. Organic electroluminescent devices using this compound as electron-transporting layer were fabricated and electroluminescent properties were studied. It was demonstrated that this compound has excellent electronic transmission performance in organic light-emitting diodes (OLED).

Ultra-smooth and robust graphene-based hybrid anode for high-performance flexible organic light-emitting diodes

2021 ◽  
Author(s):  
zhikun zhang ◽  
lianlian xia ◽  
Lizhao Liu ◽  
Yuwen Chen ◽  
zuozhi wang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Chemical Vapor ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Large Particles

Large surface roughness, especially caused by the large particles generated during both the transfer and the doping processes of graphene grown by chemical vapor deposition (CVD) is always a critical...

scholarly journals Device Modeling of Quantum Dot–Organic Light Emitting Diodes for High Green Color Purity

2021 ◽  
Vol 11 (6) ◽  
pp. 2828
Author(s):  
Byoung-Seong Jeong
Keyword(s):  
Quantum Dot ◽  
Emission Spectrum ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Wavelength Band ◽  
Light Emitting ◽  
Green Color ◽  
Organic Light

In this study, the optimal structure for obtaining high green color purity was investigated by modeling quantum dot (QD)–organic light-emitting diodes (OLED). It was found that even if the green quantum dot (G-QD) density in the G-QD layer was 30%, the full width at half maximum (FWHM) in the green wavelength band could be minimized to achieve a sharp emission spectrum, but it was difficult to completely block the blue light leakage with the G-QD layer alone. This blue light leakage problem was solved by stacking a green color filter (G-CF) layer on top of the G-QD layer. When G-CF thickness 5 μm was stacked, blue light leakage was blocked completely, and the FWHM of the emission spectrum in the green wavelength band was minimized, resulting in high green color purity. It is expected that the overall color gamut of QD-OLED can be improved by optimizing the device that shows such excellent green color purity.

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