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Abdeljabbar Es-saghiri,Abdenabi Brahmi,Aumeur El Amrani 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.76 No.6
This paper reports the performance of a pentacene-based organic thin film transistor (OTFT) that was investigated using numerical simulations for different pentacene thicknesses. The studied OTFTs showed a peak mobility in the saturation region of 5 × 10^{-2}cm^2V^{-1}s^{-1} for a pentacene thickness of 50 nm. Furthermore, an optimum Ion/Ioff current ratio of 3.5 × 10^5 was observed for a similar pentacene thickness of about 50 nm. Moreover, the threshold voltage and the sub-threshold slope were significantly affected and decreased with increasing pentacene thickness. In addition, based on our proposed approach and the simulation results, we noticed that a penatcene thickness of 50 nm remained the optimum value for the active layer channel in order to obtain optimal performance from the OTFT devices.