Organic molecule-based transistor

Our choice for an Ion Sensitive Field Effect Transistor (ISFET) as a transducing element was based on the fact that the SiO surface contains reactive SiOH groups for the covalent attachment of organic molecules and polymers. In addition the FET has fast response times and can be made very small with existing planar IC technology. FIGURE 1... 

Novel oligomers based on P-substituted thiophene derivatives were synthesised with the aim to build-up a small molecule organic field-effect transistor (OFET). The developed material, a,o)-dicyano-P,P -dibutylquaterthiophene (DCNDBQT), exhibits exeellent thermal, optical and electrochemical stability. 

Merlo, J. A. et al., /)-Channel organic semiconductors based on hybrid acene-thiophene molecules for thin-fibn transistor applications, J. Am. Chem. Soc., 127, 3997, 2005. 

This chapter concentrates on organic bipolar transistors, including details about the basic operation principles, device configurations, and processing methods, and describing the various strategies that have been applied to achieve ambipolar transport. Touching upon small molecule-based FETs and the hybrid approach, the main focus will be on polymer-based bipolar transistors since they can provide one of the ultimate solutions for simple, low-cost fabrication of flexible bipolar FETs. 

There are many different types of bent-core molecules known, and most of exotic bent-core phase structures have been well elucidated. The future research and development on bent-core LCs shall be focused on the exploration of a variety of applications. Certainly, these applications shall not be limited to today s known bent-core molecules, and the development of new types of bent-core molecules incorporating varied functionalities based on new ideas or concepts is critically important. For instance, linking bent-core molecules with nanoscience and photoisomerization chemistry is a good step. Further exploration in organic field effect transistors (OFETs) and organic photovoltaics (OPVs) could be very fmitful. 

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