Journal ArticleDOI
Analysis of exciton annihilation in high-efficiency sky-blue organic light-emitting diodes with thermally activated delayed fluorescence
TLDR
In this article, an external quantum efficiency (η EQE ) roll-off model for organic light-emitting diodes (OLEDs) using thermally-activated delayed fluorescence (TADF) of 4,5-di (9H-carbazol-9-yl) phthalonitrile (2CzPN) was presented.About:
This article is published in Organic Electronics.The article was published on 2013-11-01. It has received 426 citations till now. The article focuses on the topics: Intersystem crossing & OLED.read more
Citations
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Journal ArticleDOI
Recent advances in organic thermally activated delayed fluorescence materials.
Zhiyong Yang,Zhu Mao,Zongliang Xie,Yi Zhang,Siwei Liu,Juan Zhao,Jiarui Xu,Zhenguo Chi,Matthew P. Aldred +8 more
TL;DR: This review summarizes and discusses the latest progress concerning this rapidly developing research field, in which the majority of the reported TADF systems are discussed, along with their derived structure-property relationships, TadF mechanisms and applications.
Journal ArticleDOI
Thermally Activated Delayed Fluorescence Materials Towards the Breakthrough of Organoelectronics
Ye Tao,Kai Yuan,Ting Chen,Peng Xu,Huanhuan Li,Runfeng Chen,Chao Zheng,Lei Zhang,Wei Huang,Wei Huang +9 more
TL;DR: An overview of the quick development in TADF mechanisms, materials, and applications is presented, with a particular emphasis on their different types of metal-organic complexes, D-A molecules, and fullerenes.
Journal ArticleDOI
Purely Organic Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes.
TL;DR: A comprehensive review of TADF materials is presented, with a focus on linking their optoelectronic behavior with the performance of the organic light-emitting diode (OLED) and related EL devices.
Journal ArticleDOI
Anthraquinone-Based Intramolecular Charge-Transfer Compounds: Computational Molecular Design, Thermally Activated Delayed Fluorescence, and Highly Efficient Red Electroluminescence
Qisheng Zhang,H. Kuwabara,William J. Potscavage,Shuping Huang,Yasuhiro Hatae,Takumi Shibata,Chihaya Adachi +6 more
TL;DR: It is demonstrated that increasing the distance between donor (D) and acceptor (A) in intramolecular-charge-transfer molecules is a promising strategy for simultaneously achieving small ΔE(ST) and large k(F), which is in good agreement with those predicted by corrected time-dependent density functional theory.
Journal ArticleDOI
Molecular Design Strategy of Organic Thermally Activated Delayed Fluorescence Emitters
TL;DR: In this article, the authors reviewed molecular design strategies of organic-based TADF emitters by classifying them into several categories depending on the material parameters required for the TADFs.
References
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Journal ArticleDOI
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.
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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.
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Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilation
TL;DR: Baldo et al. as mentioned in this paper showed that the observed decrease in electrophosphorescent intensity in organic light-emitting devices at high current densities is principally due to triplet-triplet annihilation.
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Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion
TL;DR: In this article, high efficiency fluorescent organic light-emitting diodes have been realized by employing custom-designed molecules that make it possible to convert non-radiative triplet states into radiative singlet states.
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Design of Efficient Thermally Activated Delayed Fluorescence Materials for Pure Blue Organic Light Emitting Diodes
Qisheng Zhang,Jie Li,Katsuyuki Shizu,Shuping Huang,Shuzo Hirata,Hiroshi Miyazaki,Chihaya Adachi +6 more
TL;DR: TADF has been characterized for a carbazole/sulfone derivative in both solutions and doped films and a pure blue organic light emitting diode (OLED) based on this compound demonstrates a very high external quantum efficiency (EQE) of nearly 10% at low current density.