Solution-processed organic field-effect

Ebata H, Izawa T, Miyazaki E, Takimiya K, Ikeda M, Kuwabara H, Yui T (2007) Highly soluble [l]benzothieno[3,2-b]benzothiophene (BTBT) derivatives for high-performance, solution-processed organic field-effect transistors. J Am Chem Soc 129 15732-15733... 

The quinoid molecule 76 has been prepared by modification and oxidation of a suitable terthiophene precursor, and was utlized for solution-processible organic field effect transistors <07JA11684>. It should also be mentioned that such systems have been proposed to display diradical character in the singlet state, which appears to be more pronounced in longer molecules <07AG(E)9057>. 

Physics of Solution-Processed Organic Field-Effect Transistors... 

Zen, A. et al.. Solution processable organic field-effect transistors utilizing an... 

Sirringhaus, H., Device physics of solution-processed organic field-effect transistors, Adv. Mater. 17 (20), 2411-2425, 2005. 

S. A. Ponomarenko, S. Kirchmeyer, A. Elschner, B. H. Huisman, A. Karbach and D. Drechsler, Star-shaped ohgothiophenes for solution-processible organic field-effect transistors, Adv. Funct. Mater, 13, 591-596... 

Funahashi, M., Zhang, F., Tamaoki, N. High ambipolar mobility in a highly ordered smectic phase of a dialkylphenylterthiophene derivative that can be applied to solution-processed organic field-effect transistors. Adv. Mater. 19(3), 353-358 (2007)... 

Anthopoulos, T.D., Tanase, C., Setayesh, S., Meijer, E.J., Hummelen, J.C., Blom, P.W.M., and de Leeuw, D.M. (2004) Ambipolar organic field-effect transistors based on a solution-processed methanofuller-ene. Adv. Mater. 16(23-24), 2174-2179. 

An alternative route to solution-processible organic semiconductors is to use precursors to small molecule semiconductors, such as pentacene [59] or tetrabenzo-porphyrin [60], which can be converted into their fully conjugated, insoluble form by thermal or irradiative [61] treatment on the substrate. Pentacene precursors have been shown to yield field-effect mobilities of 0.01-0.1 cm2 V-1 s 1 [62], and 0.1-0.8 cm2 V-1 s 1 [63] after thermal conversion at 150-200 °C. Small molecule organic semiconductors can also be rendered solution processible by attachment of flexible side chains [64-66], Due to the relatively low solubility of these molecules the growth of uniform thin films of these molecules remains challenging, however. 

Presently there exists a strong research interest in the understanding, development, and optimisation of organic field effect transistors (OFETs) [1, 2]. Two classes of semiconducting organic materials are considered, namely molecular materials which are processed into thin films by vacuum sublimation [1, 2], and polymers which are deposited onto substrates in the form of solutions, for instance by spin coating [3]. In this chapter we report on OFETs based on thin polycrystalline films of the molecular material pentacene (Pc) as the semiconducting material. 

Meijer, E. J. et ah. Solution-processed ambipolar organic field-effect transistors and inverters, Nat. Mater., 2, 678, 2003. 

Mushrush, M., Facchetti, A., Lefenfeld, M., Katz, H.E. and Marks, T.J., Easily processable phenylene-thiophene-based organic field-effect transistors and solution-fabricated nonvolatile transistor memory elements, J. Am. Chem. Soc., 125, 9414-9423, 2003. 

Anthopoulos, T.D. et al., Ambipolar organic field-effect transistors based on a solution-processed methanofullerene, Adv. Mater. 16, 2174-2179, 2004. 

Singh, T.B. et al.. Fabrication and characterization of solution-processed methanof-ullerene-based organic field-effect transistors, J. Appl. Phys., 97, 083714, 2005. 

A. R. Brown, C. P. Jarrett, D. M. de Leeuw, and M. Matters, Field-Effect Transistors Made From Solution-Processed Organic Semiconductors, Synthetic Metals 88, 37, 1997. 

Brown, A.R., et al. 1997. Field-effect transistors made from solution-processed organic semiconductors. Synth Met 88 37. 

Indole-containing materials are used as organic field-effect transistors (OEET) (Scheme 31). Wudl and colleagues synthesized dinaphthocarbazoles (azaheptacenes) 201 and used them in solution-processed OFETs. These azaheptacenes are more robust than the standard... 

Wong WWH, Singh TB, Vak D, Pisula W, Yan C, Feng X, Williams EL, Chan KL, Mao Q, Jones DJ, Ma CQ, Mullen K, Bauerle P, Holmes AB (2010) Solution processable fluorenyl hexa-peri-hexabenzocoronenes in organic field-effect transistors and solar cells. Adv Punct Mater 20 927-938... 

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