Highly Luminescent 2D-Type Slab Crystals Based on a Molecular Charge-Transfer Complex as Promising Organic Light-Emitting Transistor Materials

2017 ◽  
Vol 29 (36) ◽  
pp. 1701346 ◽  
Author(s):  
Sang Kyu Park ◽  
Jin Hong Kim ◽  
Tatsuhiko Ohto ◽  
Ryo Yamada ◽  
Andrew O. F. Jones ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Light Emitting ◽  
Organic Light ◽  
Molecular Charge

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 Intermolecular Charge-Transfer-Induced Strong Optical Emission from Herringbone H-Aggregates

2021 ◽  
Author(s):  
Qi Sun ◽  
Jiajun Ren ◽  
Tong Jiang ◽  
Qian Peng ◽  
Qi Ou ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Optical Emission ◽  
Light Emitting ◽  
High Charge ◽  
Organic Light ◽  
Intermolecular Charge Transfer ◽  
Transfer Integrals ◽  
Strong Luminescence ◽  
Theoretical Finding ◽  
Three State Model

Superior organic light-emitting transistors (OLETs) materials require two conventionally exclusive properties: strong luminescence and high charge mobilities. We propose a three-state model through localized diabatization to quantitative analyze excited state structures for various herringbone (HB) H-aggregates and demonstrate that for some investigated systems, the low-lying intermolecular charge-transfer (CT) state couples with the bright Frenkel exciton (FE) and forms a dipole-allowed S<sub>1</sub> that lies below the dark state, proceeding strong luminescence. Specifically, such conversion in luminescence properties occurs when the electron- and hole-transfer integrals ( and ) are of the same sign and is notably larger than the excitonic coupling (<i>J</i>), i.e., . This theoretical finding can not only explain and rationalize recent experimental results on DPA and dNaAnt, both with OLET property, but also unravel an exciting scenario where strong luminescence and high charge mobilities are compatible, which will considerably broaden the aperture of novel OLET design.

Non-doped thermally activated delayed fluorescent organic light-emitting diodes using an intra- and intermolecular exciplex system with a meta-linked acridine–triazine conjugate

2018 ◽  
Vol 6 (34) ◽  
pp. 9049-9054 ◽  
Author(s):  
Seongjin Jeong ◽  
Youngnam Lee ◽  
Joon Ki Kim ◽  
Du-Jeon Jang ◽  
Jong-In Hong
Keyword(s):  
Charge Transfer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Intermolecular Charge Transfer ◽  
Charge Transfer Excitons

We report new TADF molecules (AmT and AmmT) for highly efficient non-doped OLEDs utilizing intra- and intermolecular charge transfer excitons.

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