Indole-linked triazine-dibenzothiophene/dibenzofuran based host materials for high-efficiency green and red phosphorescent organic light-emitting diodes
Artikel i vetenskaplig tidskrift, 2020

Two host heterocyclic compounds 5-(dibenzo[b,d]furan-4-yl)-1-(4,6-diphenyl-1,3,5-triazin-2-yl)-1H-indole (FITRZ) and 5-(dibenzo[b,d]thiophen-4-yl)-1-(4,6-diphenyl-1,3,5-triazin-2-yl)-1H-indole (TITRZ) were synthesized by C[sbnd]N coupling reaction of triazine and dibenzothiophene/dibenzofuran moiety with a 1,5-bridged indole unit. Their photo-physical, thermal and electrochemical properties were fully explored, and the results indicate that both of them are promising phosphorescent host materials for green and red PhOLED devices with low on-set potentials. For example, the green PHOLED based on TITRZ showed the maximum current and external quantum efficiency up to 85.9 cd/A and 23.7%. Meanwhile, the red PhOLED based on FITRZ yielded the maximum current and external quantum efficiency of 41.3 cd/A and 18.8% with a turn-on voltage of 3.0 V.

Green and red PhOLEDs

Triazine

Dibenzofuran

Dibenzothiophene

Host materials

Författare

Huan Wang

East China University of Science and Technology

Yiyao Zhang

East China University of Science and Technology

Wenxuan Song

East China University of Science and Technology

Jinhai Huang

Shanghai Taoe Chemical Technology Co., Ltd

Zhenyuan Xia

Istituto per la Sintesi Organica e la Fotoreattività

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Jianhua Su

East China University of Science and Technology

Dyes and Pigments

0143-7208 (ISSN)

Vol. 177 February 107059

Ämneskategorier

Annan fysik

Organisk kemi

Den kondenserade materiens fysik

DOI

10.1016/j.dyepig.2018.09.077

Mer information

Senast uppdaterat

2020-04-23