Abstract
The performance of organic thin-film transistors (TFTs) with a pentacene/fullerene(C 60)/pentacene (PCP) sandwich structure is presented. Using a 3.5 nm-thick C 60 layer inserted between the pentacene films, the obtained hole mobility is improved by more than six times. By applying atomic force microscopy, x-ray diffraction, Raman spectrum, and transmission line method analysis, one can reasonably infer that the smoother surface of the pentacene film covered with thin C 60 layer delays the phase transformation of the upper pentacene film, resulting in stronger intermolecular coupling and the reduction of channel resistance of the PCP TFTs from 3.03 to 1.72 M, and, therefore, improving the device performance.
Original language | English |
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Article number | 113306 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2012 Mar 12 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)