Jump to main content
Jump to site search

Issue 31, 2014
Previous Article Next Article

A rational design of carbazole-based host materials with suitable spacer group towards highly-efficient blue phosphorescence

Author affiliations

Abstract

Two novel carbazole derivatives, 3,3′-(2,6-dimethyl-1,4-phenylene)bis(9-phenyl-9H-carbazole) (DMCz) and 3,3′-(2,3,5,6-tetramethyl-1,4-phenylene)bis(9-phenyl-9H-carbazole) (TMCz), are designed and synthesized as host materials for blue phosphorescent organic light emitting diodes (PHOLEDs). Both the materials possess sufficiently high glass transition temperatures and triplet energies for the blue dopant Ir-complex iridium(III) bis(4,6-(difluorophenyl)-pyridinato-N,C′)picolinate (FIrpic, 2.65 eV). The device using DMCz as the host material showed a better performance than that of TMCz with a maximum power efficiency of 36.0 ± 0.7 lm per W, a maximum current efficiency of 43.7 ± 0.6 cd per A and a maximum external quantum efficiency (EQE) of 18.5 ± 0.1%.

Graphical abstract: A rational design of carbazole-based host materials with suitable spacer group towards highly-efficient blue phosphorescence

Back to tab navigation

Supplementary files

Article information


Submitted
29 Apr 2014
Accepted
05 Jun 2014
First published
12 Jun 2014

J. Mater. Chem. C, 2014,2, 6387-6394
Article type
Paper

A rational design of carbazole-based host materials with suitable spacer group towards highly-efficient blue phosphorescence

X. Yuan, J. Liang, Y. He, Q. Li, C. Zhong, Z. Jiang and L. Liao, J. Mater. Chem. C, 2014, 2, 6387
DOI: 10.1039/C4TC00867G

Social activity

Search articles by author

Spotlight

Advertisements