Efficient deep-blue emitters based on triphenylamine-linked benzimidazole derivatives for nondoped fluorescent organic light-emitting diodes

2013 ◽  
Vol 14 (10) ◽  
pp. 2497-2504 ◽  
Author(s):  
Seongjin Jeong ◽  
Myoung-Ki Kim ◽  
Sung Hyun Kim ◽  
Jong-In Hong
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Benzimidazole Derivatives ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

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,...

Recent advances of the emitters for high performance deep-blue organic light-emitting diodes

2015 ◽  
Vol 3 (5) ◽  
pp. 913-944 ◽  
Author(s):  
Xiaolong Yang ◽  
Xianbin Xu ◽  
Guijiang Zhou
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Recent Advances ◽  
Critical Issues ◽  
Blue Emitters

Recent advances in deep-blue emitters furnishing high performance OLEDs and associated critical issues are discussed and reviewed.

Highly efficient deep-blue organic light-emitting diodes based on pyreno[4,5-d]imidazole-anthracene structural isomers

2019 ◽  
Vol 7 (33) ◽  
pp. 10273-10280 ◽  
Author(s):  
Hui Liu ◽  
Liangliang Kang ◽  
Jinyu Li ◽  
Futong Liu ◽  
Xin He ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Device Performance ◽  
Structural Isomers ◽  
Light Emitting ◽  
Blue Region ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

By integrating PyI with anthracene, two high-efficiency blue emitters C-BPyIA and N-BPyIA are obtained. Especially, N-BPyIA exhibits decent device performance with an EQEmax of 7.67% in the deep blue region.

Starburst 4,4′,4′′-tris(carbazol-9-yl)-triphenylamine-based deep-blue fluorescent emitters with tunable oligophenyl length for solution-processed undoped organic light-emitting diodes

2015 ◽  
Vol 3 (4) ◽  
pp. 861-869 ◽  
Author(s):  
Mingquan Yu ◽  
Shumeng Wang ◽  
Shiyang Shao ◽  
Junqiao Ding ◽  
Lixiang Wang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Device Performance ◽  
Solution Processed ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

Starburst TCTA-based deep-blue emitters are developed, whose solution-processed undoped device performance increases gradually with increasing oligophenyl length.

Efficient Solution Processed Deep-blue with CIEy∈ (0.05) and Pure-white CIEx,y∈ (0.34, 0.32) Organic Light-emitting Diodes: Experimental and Theoretical Investigation

2021 ◽  
Author(s):  
Jairam Tagare ◽  
Rohit A. K. Yadav ◽  
Sujith S. Sudheendran ◽  
Deepak Kumar Dubey ◽  
Jwo-Huei Jou ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Hole Transporting ◽  
Blue Emitters

In this work, two bipolar non-conjugated deep-blue emitters, PICFOCz and BICFOCz were synthesized by incorporating the charge transporting carbazole (donor/hole transporting) and an imidazole (acceptor/electron transporting) moieties via flexible alkyl...

Dimethylsilyl-linked anthracene–pyrene dimers and their efficient triplet–triplet annihilation in organic light emitting diodes

2017 ◽  
Vol 5 (5) ◽  
pp. 1090-1094 ◽  
Author(s):  
Min Jae Sung ◽  
Hiroya Chubachi ◽  
Ryo Sato ◽  
Min-Ki Shin ◽  
Soon-Ki Kwon ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters ◽  
Triplet Triplet Annihilation

New deep blue emitters containing an sp3-hybridised tetrahedral silicon core with dimethyl groups, 9,10-biarylanthracene, and pyrene were synthesised.

scholarly journals Color-Tunable Organic Light Emitting Diodes for Deep Blue Emission by Regulating the Optical Micro-Cavity

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2867
Author(s):  
Jixin Jiang ◽  
Weiye Zheng ◽  
Junfei Chen ◽  
Zheng Xu ◽  
Dandan Song ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Resonant Cavity ◽  
Blue Emission ◽  
Optical Path ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters ◽  
Micro Cavity

Nowadays, most blue organic light emitting diodes (OLEDs) are fabricated by using sky-blue emitters which are more easily synthesized when compared with other deep blue emitters. Herein, we put forward a new idea of using an optical micro-cavity based on metal electrodes to regulate electroluminance (EL) spectra of sky-blue organic light emitting diodes to obtain a saturated deep blue emission with a narrowed full-width at half-maximum (FWHM). First, we simulate micro-cavity OLEDs and find that the transmission of the anode plays an important role in the forward emission. Meanwhile, the optical path of micro-cavity OLEDs as well as the phase shifting from electrodes influence the EL spectra and induce the extra intensity enhancement. The results show that when the resonant cavity optical path is regulated by changing the thickness of emitting layer (EML) from 25 nm to 75 nm in the micro-cavity, the EL peak of blue OLEDs has a redshift from 479 nm to 493 nm with FWHM shifting from 69.8 nm to 83.2 nm, when compared to the device without the micro-cavity, whose approximate EL peak and FWHM are 487 nm and 87 nm, respectively. However, the efficiency of electroluminescence decreases in micro-cavity OLEDs. We speculate that this is on account of the ohmic contact between ITO and Ag, the surface plasma effect and the rough morphology induced by Ag electrodes.

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