Charge carrier mobility in vacuum-sublimed dye films for light-emitting diodes studied by the time-of-flight technique

Sang Bong Lee, Takeshi Yasuda, Moon Jae Yang, Katsuhiko Fujita, Tetsuo Tsutsui

研究成果: Contribution to journalArticle査読

30 被引用数 (Scopus)

抄録

The Charge carrier mobility has been examined for a representative organic hole transport material TPD and a host material CBP, doped with a fluorescent dye, rubrene and Ir(ppy)3, by time-of-flight (TOF) technique. Decreasing of hole mobilities of the dye-doped films can be explained by a carrier-trapping model and the ionization potential difference of TPD and CBP. We successfully measured an electron mobility of the rubrene-doped TPD films, and Ir(ppy)3-doped CBP films, while the mobility could not measured non-doped TPD and CBP films. The EL process of the dye-doped systems is discussed in terms of the electron transfer properties of emission layer.

本文言語英語
ページ(範囲)67-73
ページ数7
ジャーナルMolecular Crystals and Liquid Crystals
405
DOI
出版ステータス出版済み - 2003

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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