Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 21, 2020
Previous Article Next Article

Tetraphenylbenzene-based AIEgens: horizontally oriented emitters for highly efficient non-doped deep blue OLEDs and hosts for high-performance hybrid WOLEDs

Author affiliations

Abstract

Deep blue organic-emitting fluorophores are crucial for applications in white lighting and full color flat-panel displays but emitters with high color quality and efficiency are rare. Herein, novel tetraphenylbenzene (TPB) based deep blue AIE luminogens (AIEgens) with various donor units and the same acceptors of cyano groups are developed and used to fabricate non-doped deep blue and hybrid white organic light-emitting diodes (OLEDs). Benefiting from its high emission efficiency and high proportion of horizontally oriented dipoles in the film state, the non-doped deep blue device based on CN-TPB-TPA realizes a maximum external quantum efficiency of 7.27%, with low efficiency roll-off and CIE coordinates of (0.15, 0.08). Moreover, efficient two-color hybrid warm white OLEDs (CIEx,y = 0.43, 0.45) are achieved using CN-TPB-TPA as a blue-emitting layer and a phosphor doped host, which realize maximum current, power, and external quantum efficiencies of 58.0 cd A−1, 60.7 lm W−1 and 19.1%, respectively. This work provides a general strategy to achieve high performance, stable deep blue and hybrid white OLEDs by the construction of AIEgens with an excellent horizontal orientation.

Graphical abstract: Tetraphenylbenzene-based AIEgens: horizontally oriented emitters for highly efficient non-doped deep blue OLEDs and hosts for high-performance hybrid WOLEDs

Back to tab navigation

Supplementary files

Article information


Submitted
22 Feb 2020
Accepted
07 Apr 2020
First published
07 Apr 2020

J. Mater. Chem. C, 2020,8, 7012-7018
Article type
Paper

Tetraphenylbenzene-based AIEgens: horizontally oriented emitters for highly efficient non-doped deep blue OLEDs and hosts for high-performance hybrid WOLEDs

P. Han, Z. Xu, C. Lin, D. Ma, A. Qin and B. Z. Tang, J. Mater. Chem. C, 2020, 8, 7012
DOI: 10.1039/D0TC00920B

Social activity

Search articles by author

Spotlight

Advertisements