Universal polymeric bipolar hosts for highly efficient solution-processable blue and green thermally activated delayed fluorescence OLEDs

2020 ◽  
Vol 8 (45) ◽  
pp. 16048-16056
Author(s):  
Jinhyo Hwang ◽  
Chae Yeong Kim ◽  
Hyunchul Kang ◽  
Ji-Eun Jeong ◽  
Han Young Woo ◽  
...  
Keyword(s):  
Efficient Solution ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
High Performing ◽  
Thermally Activated ◽  
Organic Light ◽  
Host Materials ◽  
Polymeric Host

Two novel polymeric host materials, P(NmCP) and P(mCP), were synthesized, and high-performing sky-blue and green thermally activated delayed fluorescence organic light-emitting diodes were achieved.

scholarly journals Bipyridine‐Containing Host Materials for High Performance Yellow Thermally Activated Delayed Fluorescence‐Based Organic Light Emitting Diodes with Very Low Efficiency Roll‐Off

2019 ◽  
Vol 8 (1) ◽  
pp. 1901283 ◽  
Author(s):  
Dongyang Chen ◽  
Pachaiyappan Rajamalli ◽  
Francisco Tenopala‐Carmona ◽  
Cameron L. Carpenter‐Warren ◽  
David B. Cordes ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Host Materials ◽  
Low Efficiency

Noble Dibenzothiophene-Based Bipolar Hosts for Blue Organic Light-Emitting Diodes Using Thermally Activated Delayed Fluorescence

2020 ◽  
Vol 20 (11) ◽  
pp. 7191-7195
Author(s):  
JaMin Lee ◽  
Sae Won Lee ◽  
Young Sik Kim
Keyword(s):  
Dft Calculations ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Host Materials ◽  
Td Dft

Novel thermally activated delayed fluorescence (TADF) host materials for blue electrophosphores-cence were designed by combining the electron acceptor dibenzothiophene (DBT) unit and the electron donor acridine derivatives into a single molecular unit by density functional theory (DFT). Depending on the optimal charge transfer, DFT and time-dependent DFT (TD-DFT) calculations for the ground state were performed to obtain the energy of the singlet (S1) and triplet (T1) excited states of the TADF material for Hartree-Fock percentage of TD-DFT. The sufficiently large separation between the HOMO and LUMO resulted in a small difference in energy (ΔEST) between the S1 and T1 states using DFT and TD-DFT calculations. The host molecules retained high triplet energy and showed great potential for use in blue organic light-emitting diodes (OLED). The results showed that these molecules are a good TADF host materials because they have a low barrier to hole and electron injection with a balanced charge transporting property for both holes and electrons, and a small ΔEST.

Chromenopyrazole-Based Bipolar Blue Host Materials for Highly Efficient Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes

2018 ◽  
Vol 30 (15) ◽  
pp. 5005-5012 ◽  
Author(s):  
Mallesham Godumala ◽  
Suna Choi ◽  
Seo Yeon Park ◽  
Min Ju Cho ◽  
Hyung Jong Kim ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Host Materials

Efficient solution processed hybrid white organic light-emitting diodes based on a blue thermally activated delayed fluorescence emitter

2020 ◽  
Vol 695 ◽  
pp. 137753 ◽  
Author(s):  
Chul Woong Joo ◽  
Gunel Huseynova ◽  
Ji Hye Kim ◽  
Jae-Min Yoo ◽  
Yong Hyun Kim ◽  
...  
Keyword(s):  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light

Manipulating Förster and Dexter interactions between thermally activated delayed fluorescence host and phosphorescent dopant for highly efficient solution-processed red and white OLEDs

2022 ◽  
Author(s):  
Yang Tang ◽  
Yuan Liu ◽  
Weimin Ning ◽  
Lisi Zhan ◽  
Junqiao Ding ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Efficient Solution ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
White Oleds

Solution-processed phosphorescent organic light-emitting diodes (PhOLEDs) have been known as promising alternatives to vacuum deposited counterparts due to the excellent cost-effectiveness. However, the solution-processed devices still suffered from low efficiencies...

Efficient solution-processed orange-red organic light-emitting diodes based on a novel thermally activated delayed fluorescence emitter

2018 ◽  
Vol 6 (34) ◽  
pp. 9152-9157 ◽  
Author(s):  
Xing Li ◽  
Kai Wang ◽  
Yi-Zhong Shi ◽  
Ming Zhang ◽  
Gao-Le Dai ◽  
...  
Keyword(s):  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light

A novel thermally activated delayed fluorescence (TADF) emitter was designed and synthesized for solution-processed red organic light-emitting diodes (OLEDs).

Sign in / Sign up

Export Citation Format

Share Document