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

  • Chen-Han Chien
  • , Liang-Rern Kung
  • , Chen-Hao Wu
  • , Ching-Fong Shu
  • , Sheng-Yuan Chang
  • , Yun Chi

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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.
Original languageEnglish
Pages (from-to)3461-3466
JournalJournal of Materials Chemistry
Volume18
Issue number29
Online published16 Jun 2008
DOIs
Publication statusPublished - 2008
Externally publishedYes

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