Copper phthalocyanine thin-film transistors with polymeric gate dielectric

Experimental study and analytical modeling of the channel length influence on the electrical characteristics of small-molecule thin-film transistors

“…From this figure, it can be seen that the film was composed of homogeneous small crystal grains with an average diameter of 40-50 nm. These values were in good agreement with the crystallite sizes calculated from the XRD measurements [9]. For short channel lengths (L = 2.5µm and L= 5µm) the proximity of the drain and source electrodes can affect the conduction channel.…”

“…Promising applications of OTFT include gas and image sensors, smart cards, active-matrix displays, radio-frequency identification tags and flexible microelectronics [4][5][6][7][8]. Among the wide variety of organic semiconductors considered, metal phthalocyanine (metal-Pc) has been widely studied as a standard organic semiconductor to be used in the fabrication of organic electronic devices [9][10][11][12]. Copper phthalocyanine (CuPc) is a p-type organic semiconductor material, which have been mass-produced in relatively high yields for many years and known to be one of the most robust organic compounds with excellent thermal and chemical stability in ambient conditions [13].…”

“…Copper phthalocyanine (CuPc) is a p-type organic semiconductor material, which have been mass-produced in relatively high yields for many years and known to be one of the most robust organic compounds with excellent thermal and chemical stability in ambient conditions [13]. Several studies have been focused and performed for characterizing and improving the performances of CuPc based TFTs [9][10][11][12][13][14].Indeed, a high mobility up to 0.02 cm 2 V -1 s -1 and on/off ratio around of 10 5 for CuPc-TFTs have been reported [10]. Puigdollers et al reported that the field effect mobility was around 0.2×10 -4 for the CuPc-TFT using polymethylmethacrylate (PMMA) as a polymer gate dielectric [9].…”

“…Several studies have been focused and performed for characterizing and improving the performances of CuPc based TFTs [9][10][11][12][13][14].Indeed, a high mobility up to 0.02 cm 2 V -1 s -1 and on/off ratio around of 10 5 for CuPc-TFTs have been reported [10]. Puigdollers et al reported that the field effect mobility was around 0.2×10 -4 for the CuPc-TFT using polymethylmethacrylate (PMMA) as a polymer gate dielectric [9]. F. Yakuphanoglu et al [14] reported that CuPc-TFT was fabricated using pSiO 2 as gate dielectric.…”

Temperature dependence of the electrical properties of organic thin-film transistors based on tetraphenyldibenzoperiflanthene deposited at different substrate temperatures: Experiment and modeling

“…Alongside of the pentacene, other small-molecules (n or p-type) such as fullerene (C 60 ) [13], copper phthalocyanine (CuPc) [14][15] and N, N-ditridecylperylenediimide (PTCDI-C 13 H 27 ) [16] are reported as a good candidates for the semiconductor layer in OTFTs devices. On the other hand, a numerous collection of donor organic materials have been developed and studied in the previous decade.…”