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

doi:10.1080/15421400390264162

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

Department of Advanced Device Materials

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	67-73
Number of pages	7
Journal	Molecular Crystals and Liquid Crystals
Volume	405
DOIs	https://doi.org/10.1080/15421400390264162
Publication status	Published - 2003

All Science Journal Classification (ASJC) codes

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

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

abstract = "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.",

author = "Lee, {Sang Bong} and Takeshi Yasuda and Yang, {Moon Jae} and Katsuhiko Fujita and Tetsuo Tsutsui",

year = "2003",

doi = "10.1080/15421400390264162",

language = "English",

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journal = "Molecular Crystals and Liquid Crystals",

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T1 - Charge carrier mobility in vacuum-sublimed dye films for light-emitting diodes studied by the time-of-flight technique

AU - Lee, Sang Bong

AU - Yasuda, Takeshi

AU - Yang, Moon Jae

AU - Fujita, Katsuhiko

AU - Tsutsui, Tetsuo

PY - 2003

Y1 - 2003

N2 - 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.

AB - 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.

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

Abstract

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