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

被引：27

作者：

Lee, SB ^{[1
]}

Yasuda, T ^{[1
]}

Yang, MJ ^{[1
]}

Fujita, K ^{[1
]}

Tsutsui, T ^{[1
]}

机构：

[1] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Dept Appl Sci Elect & Mat, Kasuga, Fukuoka 8168580, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2003年 / 405卷

关键词：

Ir(ppy())3-doped CBP film; rubrene-doped TPD film; time-of-flight (TOF);

D O I：

10.1080/15421400390264162

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：67 / 73

页数：7

共 14 条

[1] Efficient electrophosphorescence using a doped ambipolar conductive molecular organic thin film [J].