Molecular conductors fabrication

The ability to connect by means of wiring is an important precondition for the fabrication of networks of molecular-electronic elements. For this purpose, as well as for the connection to macroscopic devices, one requires connecting wires on a molecular scale. The search for suitable molecular conductors has up to now been more a goal for molecular physics than for solid-state physics. We refer in this connection to Sects. 21.5 and 22.4, as well as 22.5, in the textbook by Haken and Wolf[l]. 

An important new direction for conductive polymer research involves the development of techniques whereby molecular conductors are induced to support superconductivity through their intimate contact with high-Tc superconductor systems. There are several reasons why molecular materials are interesting candidates for proximity experiments. First, many molecular materials are low dimensional in nature, making it possible to observe phenomena unique to these systems (see below). Moreover, molecular materials possess the ability to be chemically tailored for specific applications. In addition, many of these materials can be processed at room temperature, thus making the fabrication of novel devices plausible. 

Organic materials are used in the existing electronics industries mainly for passive purposes insulating and structural support materials. There are, however, exceptions, such as photoresists, liquid crystal displays, and electrocopying. More challenging to many researchers in a diversity of fields is the application of organic conductors from the viewpoint of the fabrication of molecular electronics, to which this chapter is devoted. 

Most materials will conduct one type of carrier, holes, or electrons, more efficiently than the other. Even though some molecular and polymeric materials are good conductors for both types, there is still a preference for one carrier to have a higher mobility than the other. If an OLED is fabricated with only a single organic layer, as shown in... 

In the development and fabrication of molecular-based electronics, it is essential to have a good understanding of the chemistry and electronic struemre of the electroactive polymer interface with other polymers, semi-conductors and metals. A better understanding of the CT interactions at the polymer/metal interface will also facilitate the application of conductive polymer coatings for metal passivation and corrosion prevention [268]. An overview of measurement methods and quantum chemical calculation techniques for smdying the chemical and electronic structure of conjugated... 

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