Jump to main content
Jump to site search

Issue 10, 2012
Previous Article Next Article

Highly efficient deep-blue electroluminescence based on the triphenylamine-cored and peripheral blue emitters with segregative HOMO–LUMO characteristics

Author affiliations

Abstract

To obtain highly efficient and stable blue electroluminescence, two novel star-shaped compounds are purposefully designed and synthesized, which are composed of two functional groups, central triphenylamine (TPA) and peripheral anthracene (AN) or phenanthrene (PA) with obviously segregative electronic density distribution characteristics between the highest occupied molecular orbital and the lowest unoccupied molecular orbital (HOMO and LUMO). As a light-emitting layer, they exhibit not only highly efficient deep-blue electroluminescence, but also good stability in organic light-emitting diodes (OLEDs) due to the combination of several advantageous properties (electrochemical, thermal and morphological stability). In particular, for triphenylamine-cored phenanthrene (TPA-PA), the external quantum efficiency of 7.23% is the best reported result for non-doped deep-blue OLEDs, and the lifetime of the device is also improved, being twice that of 2-methyl-9,10-di(2-naphthyl) anthracene (MADN) under the same device conditions.

Graphical abstract: Highly efficient deep-blue electroluminescence based on the triphenylamine-cored and peripheral blue emitters with segregative HOMO–LUMO characteristics

Back to tab navigation

Supplementary files

Article information


Submitted
18 Sep 2011
Accepted
18 Oct 2011
First published
21 Nov 2011

J. Mater. Chem., 2012,22, 4401-4408
Article type
Paper

Highly efficient deep-blue electroluminescence based on the triphenylamine-cored and peripheral blue emitters with segregative HOMO–LUMO characteristics

S. Tang, W. Li, F. Shen, D. Liu, B. Yang and Y. Ma, J. Mater. Chem., 2012, 22, 4401
DOI: 10.1039/C1JM14639D

Search articles by author

Spotlight

Advertisements