In spite of considerable progress during the last years, the performance of Organic Thin-Film Transistors lays behind that of their inorganic counterpart, the only exception being amorphous Si based devices. Consequently, the applications can be found where low fabrication costs and large area are of the biggest importance. This means possible series production of electronic bar-code and identification tags, and, especially in the last two years, active matrix elements for organic flat panel displays. Based on that, a growing number of industrial groups recently initiated research programs in...