Molecular Design Tactics for Highly Efficient Thermally Activated Delayed Fluorescence Emitters for Organic Light Emitting Diodes

2018 ◽  
Vol 19 (8) ◽  
pp. 1499-1517 ◽  
Author(s):  
Rajendra Kumar Konidena ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Molecular Design ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light

A New Molecular Design Based on Thermally Activated Delayed Fluorescence for Highly Efficient Organic Light Emitting Diodes

2016 ◽  
Vol 138 (2) ◽  
pp. 628-634 ◽  
Author(s):  
Pachaiyappan Rajamalli ◽  
Natarajan Senthilkumar ◽  
Parthasarathy Gandeepan ◽  
Pei-Yun Huang ◽  
Min-Jie Huang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Molecular Design ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light

scholarly journals Recent advances on organic blue thermally activated delayed fluorescence (TADF) emitters for organic light-emitting diodes (OLEDs)

2018 ◽  
Vol 14 ◽  
pp. 282-308 ◽  
Author(s):  
Thanh-Tuân Bui ◽  
Fabrice Goubard ◽  
Malika Ibrahim-Ouali ◽  
Didier Gigmes ◽  
Frédéric Dumur
Keyword(s):  
Molecular Orbital ◽  
Light Emitting Diodes ◽  
Molecular Design ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Recent Advances

The design of highly emissive and stable blue emitters for organic light emitting diodes (OLEDs) is still a challenge, justifying the intense research activity of the scientific community in this field. Recently, a great deal of interest has been devoted to the elaboration of emitters exhibiting a thermally activated delayed fluorescence (TADF). By a specific molecular design consisting into a minimal overlap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) due to a spatial separation of the electron-donating and the electron-releasing parts, luminescent materials exhibiting small S1–T1 energy splitting could be obtained, enabling to thermally upconvert the electrons from the triplet to the singlet excited states by reverse intersystem crossing (RISC). By harvesting both singlet and triplet excitons for light emission, OLEDs competing and sometimes overcoming the performance of phosphorescence-based OLEDs could be fabricated, justifying the interest for this new family of materials massively popularized by Chihaya Adachi since 2012. In this review, we proposed to focus on the recent advances in the molecular design of blue TADF emitters for OLEDs during the last few years.

Novel yellow thermally activated delayed fluorescence emitters for highly efficient full-TADF WOLEDs with low driving voltages and remarkable color stability

2019 ◽  
Vol 43 (34) ◽  
pp. 13339-13348 ◽  
Author(s):  
Tingting Huang ◽  
Di Liu ◽  
Deli Li ◽  
Wenfeng Jiang ◽  
Jingyang Jiang
Keyword(s):  
Light Emitting Diodes ◽  
Color Stability ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light

Novel yellow thermally activated delayed fluorescence (TADF) emitters were developed for full-TADF white organic light-emitting diodes with a stable CRI of 72 and efficiencies of 48.22 cd A−1 and 20.16%.

Highly efficient blue thermally activated delayed fluorescence organic light emitting diodes based on tercarbazole donor and boron acceptor dyads

2020 ◽  
Vol 8 (7) ◽  
pp. 2272-2279 ◽  
Author(s):  
Durai Karthik ◽  
Dae Hyun Ahn ◽  
Jae Hong Ryu ◽  
Hyuna Lee ◽  
Jee Hyun Maeng ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Boron Acceptor

Two new blue TADF emitters, 3CzTB and M3CzB, for application in highly efficient organic light-emitting diodes are reported.

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