Organic Field-Effect Transistors semiconductors

Disubstituted DTT 495 has been reported to be a organic semiconductor for organic field-effect transistors <2004SM(146)251>. 

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]. 

The meso-functionalized bis(thien-2-yl)methanes 267 (X=S) and bis(furan-2-yl)methanes 267 (X=0) were used for synthesizing the first neutral meso-functionalized tetrathia[22]annulene derivatives 271 (X=S) and tetraoxa[22]annulene derivatives 271 (X=0) (Scheme 105). The compounds were tested for organic field effect transistor (OFET) studies and have shown good mobilities with p-type semiconductor behavior (11JCS(CC)905,12JCS(CC)121). 

An organic field-effect transistor (FET) consists of a number of discrete layers, formed from insulating, semiconductor or electrically conducting material (Fig. 13.1). It can roughly be considered as a parallel plate capacitor, where one conducting electrode, the gate, is electrically insulated from the other electrode, which is... 

The field known as organic or plastic electronics is centered on field effect transistor (FET)-based circuits mounted on large-area and/or flexible substrates. When the semiconductor is organic, the device is referred to as an organic field-effect transistor (OFET). Work on OFET has been extensively reviewed, most notably and comprehensively in Chemistry of Materials and Journal of Materials Research special issues, to which the one of us has contributed three articles [1-3]. 

Contacts are the elementary building blocks for all electronic devices. These include interfaces between semiconductors of different doping type (homojunc-tions) or of different composition (heterojunctions), and junctions between a metal and a semiconductor, which can be either rectifying (Schottky junction) or ohmic. Because of their primary importance, tire physics of semiconductor jrmc-tions is largely dealt with in numerous textbooks [11, 12]. We shall concentrate here on basic aspects of the metal-semiconductor (MS) and, above all, metal-insulator-semiconductor (MIS) junctions, which are involved in the organic field-effect transistors. 

Electronic States at the Dielectric/Semiconductor Interface in Organic Field-Effect Transistors... 

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