Journal Article10.1002/ANIE.201402992
Luminous Butterflies: Efficient Exciton Harvesting by Benzophenone Derivatives for Full-Color Delayed Fluorescence OLEDs†
Sae Youn Lee,Takuma Yasuda,Takuma Yasuda,Takuma Yasuda,Yu Seok Yang,Qisheng Zhang,Chihaya Adachi,Chihaya Adachi +7 more
531
TL;DR: Organic light-emitting diodes with these benzophenone derivatives doped in the emissive layer can generate electroluminescence ranging from blue to orange-red and white, with maximum external quantum efficiencies of up to 14.3%.
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Abstract: Butterfly-shaped luminescent benzophenone derivatives with small energy gaps between their singlet and triplet excited states are used to achieve efficient full-color delayed fluorescence. Organic light-emitting diodes (OLEDs) with these benzophenone derivatives doped in the emissive layer can generate electroluminescence ranging from blue to orange-red and white, with maximum external quantum efficiencies of up to 14.3%. Triplet excitons are efficiently harvested through delayed fluorescence channels.
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Citations
Multiple-Resonance-Induced Thermally Activated Delay Fluorescence Materials Based on Indolo[3,2,1-jk]carbazole with an Efficient Narrowband Pure-Green Electroluminescence.
Xu-Feng Luo,Shizhu Song,Hua‐Xiu Ni,Huili Ma,De Zhi Yang,Dongge Ma,You-Xuan Zheng,Jing-Lin Zuo +7 more
TL;DR: In this article , two multiple-resonance thermally activated delayed fluorescence emitters (VTCzBN and TCzBN) based on indolo[3,2,1-jk] carbazole unit and boron-nitrogen skeletons, whose emissions peaking at 496 and 521 nm with full width at half maximum of 34 and 29 nm, respectively, were reported.
112
Construction and multifunctional applications of carbon dots/PVA nanofibers with phosphorescence and thermally activated delayed fluorescence
Jiangling He,Youling He,Yonghao Chen,Xuejie Zhang,Chaofan Hu,Jianle Zhuang,Bingfu Lei,Yingliang Liu +7 more
TL;DR: In this paper, an ordered mesoporous structure from the electrospun CDs/PVA nanofibers can effectively stabilize the triplet states of CDs, thus enabling the reverse intersystem crossing (RISC) process for TADF and realizing the first example in CDs/polymer system.
110
Circularly Polarized Electroluminescence of Thermally Activated Delayed Fluorescence-Active Chiral Binaphthyl-Based Luminogens
TL;DR: R/S-1 was chosen as emitting layers for orange-red circularly polarized organic light-emitting diodes (CP-OLEDs), which can display low turn-on voltage (Von) of 3.4 V, high maximum brightness (Lmax) up to 40470 cd m-2, moderate external quantum efficiency (EQE) of 4.1 %.
106
Tuning a Weak Emissive Blue Host to Highly Efficient Green Dopant by a CN in Tetracarbazolepyridines for Solution‐Processed Thermally Activated Delayed Fluorescence Devices
Chao Tang,Tao Yang,Xudong Cao,Youtian Tao,Fangfang Wang,Cheng Zhong,Yan Qian,Xinwen Zhang,Wei Huang,Wei Huang +9 more
TL;DR: In this paper, a new building block known as cyanopyridine (CN) was introduced to the electron-withdrawing pyridine ring for a new effi cient TADF material 2,3,5,6-tetracarbazole-4-cyano-pyridine(4CzCNPy).
105
Chiral TADF-Active Polymers for High-Efficiency Circularly Polarized Organic Light-Emitting Diodes.
TL;DR: In this paper, a chiral donor-acceptor copolymerization strategy was proposed to develop chiral nonconjugated polymers with thermally activated delayed fluorescence (TADF).
102
References
Highly efficient phosphorescent emission from organic electroluminescent devices
Marc A. Baldo,D. F. O’Brien,Yujian You,Andrei Shoustikov,Scott Sibley,Scott Sibley,Mark E. Thompson,Stephen R. Forrest +7 more
TL;DR: In this article, a host material doped with the phosphorescent dye PtOEP (PtOEP II) was used to achieve high energy transfer from both singlet and triplet states.
7.7K
Highly efficient organic light-emitting diodes from delayed fluorescence
Hiroki Uoyama,Kenichi Goushi,Kenichi Goushi,Katsuyuki Shizu,Hiroko Nomura,Chihaya Adachi,Chihaya Adachi +6 more
TL;DR: A class of metal-free organic electroluminescent molecules in which the energy gap between the singlet and triplet excited states is minimized by design, thereby promoting highly efficient spin up-conversion from non-radiative triplet states to radiative singlet states while maintaining high radiative decay rates.
•Book
Fundamentals of Photonics
Bahaa E. A. Saleh,Malvin C. Teich,Richard E. Slusher +2 more
- 15 Aug 1991
TL;DR: The Fundamentals of Photonics, Third Edition as discussed by the authors is a self-contained and up-to-date introductory-level textbook that thoroughly surveys this rapidly expanding area of engineering and applied physics.
5.1K
Very high-efficiency green organic light-emitting devices based on electrophosphorescence
TL;DR: In this paper, the performance of an organic light-emitting device employing the green electrophosphorescent material, fac tris(2-phenylpyridine) iridium [Ir(ppy)3] doped into a 4,4′-N,N′-dicarbazole-biphenyl host was described.
3.8K
Nearly 100% internal phosphorescence efficiency in an organic light emitting device
TL;DR: In this paper, the authors demonstrate very high efficiency electrophosphorescence in organic light-emitting devices employing a phosphorescent molecule doped into a wide energy gap host, achieving a maximum external quantum efficiency of 19.0±1.0 and luminous power efficiency of 60±5 lm/W.
3.6K