Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1264389 | Organic Electronics | 2008 | 5 Pages |
Abstract
The hole mobility in 9-(2-ethylhexyl)carbazole so-called liquid carbazole, in poly(N-vinylcarbazole) (PVK) and in their blends is determined by time-of-flight experiment using a phthalocyanine charge generation layer. With an applied electric field of 2.5 × 105 V/cm, mobilities of 4 × 10−6 cm2/Vs and 6 × 10−7 cm2/Vs are measured in liquid carbazole and PVK, respectively. The enhancement of the charge carrier mobility in liquid carbazole is attributed to both a larger transfer integral and changes in the distribution of the excimer trapping sites. The results show the potential interest of liquid carbazole for electroactive applications in optoelectronics.
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Authors
J.-C. Ribierre, T. Aoyama, T. Muto, Y. Imase, T. Wada,