Issue 29, 2008

A solution-processable bipolar molecular glass as a host material for white electrophosphorescent devices

Abstract

A solution-processable bipolar material tBu-OXDTFA comprising an electron-rich triphenylamine core and electron-deficient oxadiazole/fluorene peripheries was synthesized. This dendrimer-like molecule not only possesses a high triplet energy (2.74 eV) but also exhibits excellent film-forming properties upon solution processing. We achieved highly efficient white electrophosphorescent OLEDs (22.3 cd A−1, 11.6%) through solution processing, wherein the single white emitting layer was readily formed after spin-coating a solution of blue- and red-phosphor co-dopants containing tBu-OXDTFA as the host matrix.

Graphical abstract: A solution-processable bipolar molecular glass as a host material for white electrophosphorescent devices

Article information

Article type
Paper
Submitted
11 Mar 2008
Accepted
16 May 2008
First published
16 Jun 2008

J. Mater. Chem., 2008,18, 3461-3466

A solution-processable bipolar molecular glass as a host material for white electrophosphorescent devices

C. Chien, L. Kung, C. Wu, C. Shu, S. Chang and Y. Chi, J. Mater. Chem., 2008, 18, 3461 DOI: 10.1039/B804192J

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