Organic field-effect sensors

Design and Technology of Organic Field-Effect Sensors... 

As a class of n-type organic semiconductors, PBI derivatives have received considerable attention for a variety of applications [312, 313], for example, for organic or polymer light-emitting diodes (OLEDs and PLEDs) [314, 315], thin-film organic field-effect transistors (OFETs) [316, 317], solar cells [318, 319], and liquid crystals [320]. They are also interesting candidates for single-molecule device applications, such as sensors [321], molecular wires [322], or transistors [141]. 

More recently, the 5-5 heterocyclic system has found application in the preparation of -type organic field effect transistors, which are currently receiving much attention for applications such as flexible displays, low-cost electronic papers, and smart memory-sensor elements. The most recent examples are molecules prepared by Yamashita, who has prepared the planar, perfluorinated thiazolothiazole molecules 169-171 to this end <2004CL1170, 2005JA5336, 2004JMC1787>. 

Someya, T. et al., A large-area, flexible pressure sensor matrix with organic field-effect transistors for artificial skin applications, Proc. Natl. Acad. Sci. U.S.A., 101, 9966, 2004. 

T. Someya. Integration of organic field-effect transistors and rubbery pressure sensors for artificial skin applications. In Electron Devices Meeting, 2003. lEDM 03 Technical Digest. IEEE International, pages 8.4.1-8.4.4, 2003. 

Bauer. Transparent pyroelectric sensors and organic field-effect transistors with fluorinated polymers steps towards organic infrared detectors. Dielectrics and Electrical Insulation, IEEE Transactions on, 13(5) 1087-1092, 2006. 

I. Kymissis. Integrated Circuits and Sensors using Organic Field Effect Transistors and Photodetectors. In International Meeting on Information Display, Incheon, South Korea, October 2008 2008. 

Pol mier devices such as sensors, organic field effect transmitters, printed circuit boards, electrochromic devices, nonvolatile memory devices, or photovoltaic devices can be fabricated (22). 

The organic field effect transistor (OFET) acts essentially as an electronic valve by modulating the semiconductor channel conductance via the gate field. This device is essential in all electronic applications, including integrated circuits for memories and sensors and also to drive individual pixels in active matrix displays. Probably one of the most exciting applications of organic electronic circuits is in the supply chain area, where radiofrequency-powered elements (e.g. RFID tag) may replace ID barcodes for identification and be applicable as a backplane drive for displays. 

Maiinelli F, Dell Aquila A, Torsi L, Tey J, Suranna GP, Mastrorilli P, Romanazzi G, Nobile CF, Mhmsalkar SG, Cioffi N, Palmisano F (2009) An organic field effect transistor as a selective NOx sensor operated at room temperature. Sens Actuators B 140 445-450... 

As a low-cost alternative to traditional inorganic semiconductors based transistors, organic field effect transistors are ideally positioned for applications such as radio frequency ID tags, sensors, and smart banknotes [36-40]. An archetypical structure of a bottom-gate top-contact OFET is shown in Scheme 3.7a. Other device architectures have also been employed depending on the relative... 

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