Liquid carbazole substituted with a poly(ethylene oxide) group and its application for liquid organic light-emitting diodes

Korefumi Kubota, Shuzo Hirata, Yuki Shibano, Osamu Hirata, Masayuki Yahiro, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

We report efficient carrier injection characteristics in liquid organic light-emitting diodes (OLEDs). The use of a liquid carbazole substituted with a poly(ethylene oxide) (PEO) chain provided a substantial improvement in carrier injection compared to devices constructed with carbazoles without PEO units. The external electroluminescence quantum efficiency (φ EL) of an OLED with the liquid carbazole as an emitting layer resulted in φ EL = 0.75%, 25 times higher φEL than that of our previous liquid OLED without electrolyte.

Original languageEnglish
Pages (from-to)934-936
Number of pages3
JournalChemistry Letters
Volume41
Issue number9
DOIs
Publication statusPublished - Sep 17 2012

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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