Highly efficient dual-core derivatives with EQEs as high as 8.38% at high brightness for OLED blue emitters

2019 ◽  
Vol 7 (46) ◽  
pp. 14709-14716 ◽  
Author(s):  
Seokwoo Kang ◽  
Hyocheol Jung ◽  
Hayoon Lee ◽  
Sunwoo Park ◽  
Joonghan Kim ◽  
...  
Keyword(s):  
High Efficiency ◽  
High Luminance ◽  
High Brightness ◽  
Highly Efficient ◽  
Fluorescent Materials ◽  
Blue Emitters ◽  
Dual Core ◽  
Very High

Three blue fluorescent materials were newly synthesized. A device doped with p-TPA-AP-TPA displayed a very high efficiency of 9.14 cd A−1 and an EQE of 8.38% at a high luminance of 5000 cd m−2.

High efficiency dual-core materials with 8.38% EQE for organic blue emitters

2020 ◽  
Author(s):  
Seokwoo Kang ◽  
Sunwoo Park ◽  
Hyocheol Jung ◽  
Sangshin Park ◽  
Hyukmin Kwon ◽  
...  
Keyword(s):  
High Efficiency ◽  
Blue Emitters ◽  
Dual Core ◽  
Core Materials

Adamantane-Based Wide-Bandgap Host Material: Blue Electrophosphorescence with High Efficiency and Very High Brightness

2015 ◽  
Vol 21 (22) ◽  
pp. 8250-8256 ◽  
Author(s):  
Yu Gu ◽  
Liping Zhu ◽  
Yifan Li ◽  
Ling Yu ◽  
Kailong Wu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Wide Bandgap ◽  
Host Material ◽  
High Brightness ◽  
Very High

Highly efficient and thermally robust cyan-green phosphor-in-glass film for high-brightness laser lighting

2021 ◽  
Author(s):  
Huajun Wu ◽  
Guo-Hui Pan ◽  
Zhendong Hao ◽  
Liangliang Zhang ◽  
Hao Wu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Glass Film ◽  
Green Phosphor ◽  
High Brightness ◽  
Highly Efficient ◽  
Compact Size ◽  
Color Rendering

Laser-driven white lighting has drawn great attention due to its high-brightness, high efficiency and compact size. However, the current laser lighting usually suffers a low color rendering (Ra~60) due to...

Novel Carbazole-based Multifunctional Materials with Hybridized Local and Charge-Transfer Excited State Acting as Deep Blue Emitters and Phosphorescent Hosts for Highly Efficient Organic Light-Emitting Diodes

2021 ◽  
Author(s):  
Haitao Zhou ◽  
Mengna Yin ◽  
Zhenhong Zhao ◽  
Yanqin Miao ◽  
Xin Jin ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Multifunctional Materials ◽  
Light Emitting ◽  
Highly Efficient ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

In this work, two carbazole- and benzo[d]oxazole-based novel multifunctional materials with hybridized local and charge-transfer (HLCT) characteristic, namely OCI and OCT, which could act as deep-blue fluorophors and phosphorescent hosts,...

scholarly journals A self-boosting microwave plasma strategy tuned by air pressure for the highly efficient and controllable surface modification of carbon

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 9955-9963
Author(s):  
Yanjing Liu ◽  
Jiawei He ◽  
Bing Zhang ◽  
Huacheng Zhu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Carbon Fiber ◽  
High Efficiency ◽  
Microwave Plasma ◽  
Air Pressure ◽  
Air Plasma ◽  
Highly Efficient ◽  
Carbon Fiber Cloth

Microwave enabled air plasma was boosted by a carbon fiber cloth (CFC) and used for the high-efficiency surface modification of the CFC, yielding CFCs with tunable contents of oxygen and each O-containing group.

scholarly journals Near quantitative synthesis of urea macrocycles enabled by bulky N-substituent

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yingfeng Yang ◽  
Hanze Ying ◽  
Zhixia Li ◽  
Jiang Wang ◽  
Yingying Chen ◽  
...  
Keyword(s):  
High Efficiency ◽  
Molecular Structures ◽  
High Yield ◽  
Kinetic Control ◽  
High Concentration ◽  
Weak Association ◽  
Quantitative Synthesis ◽  
Thermodynamic Stabilization ◽  
Discrete Structures ◽  
Very High

AbstractMacrocycles are unique molecular structures extensively used in the design of catalysts, therapeutics and supramolecular assemblies. Among all reactions reported to date, systems that can produce macrocycles in high yield under high reaction concentrations are rare. Here we report the use of dynamic hindered urea bond (HUB) for the construction of urea macrocycles with very high efficiency. Mixing of equal molar diisocyanate and hindered diamine leads to formation of macrocycles with discrete structures in nearly quantitative yields under high concentration of reactants. The bulky N-tert-butyl plays key roles to facilitate the formation of macrocycles, providing not only the kinetic control due to the formation of the cyclization-promoting cis C = O/tert-butyl conformation, but also possibly the thermodynamic stabilization of macrocycles with weak association interactions. The bulky N-tert-butyl can be readily removed by acid to eliminate the dynamicity of HUB and stabilize the macrocycle structures.

Unprecedentedly high efficiency for photocatalytic conversion of methane to methanol over Au–Pd/TiO2 – what is the role of each component in the system?

2021 ◽  
Author(s):  
Xiaojiao Cai ◽  
Siyuan Fang ◽  
Yun Hang Hu
Keyword(s):  
Methane Conversion ◽  
High Efficiency ◽  
Mild Conditions ◽  
Highly Efficient ◽  
System P ◽  
Conversion Of Methane

Direct and highly efficient methane conversion to methanol under mild conditions is achieved via photocatalysis over Au–Pd/TiO2.

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