Organic Charge Transfer Systems: the Next Step in Molecular Electronics?

نویسنده

  • Michael Huth
چکیده

Since the 1950s a lot of effort has been devoted into the development of organic conductors. By a substantial degree this has been inspired by W. A. Little’s theoretical analysis of London’s idea that superconductivity might occur in organic macromolecules or polymers [1]. Over time this has resulted in the discovery of several organic metals and superconductors, albeit not with spectacularly high critical temperatures. The dominating material class in this respect are the organic charge transfer (CT) compounds which have provided an extended playground for studying the physics of low-dimensional, strongly correlated electron systems [2]. On the other hand, the practical application of organic materials relies on organic semiconductors rather than organic metals. Presently, polymers have found access to the semiconductor industry in capacitors and rechargeable batteries. Current research interests, which have been initiated already in the 1980s, are devoted to an application-oriented development for the growing market of organic electroluminescence devices, field effect transistors and solar cells. These devices are largely based on one-component organic materials or blends. Quite recently the research field of single-molecule electronics becomes increasingly popular. There is a certain irony in the fact that by far the largest fraction of organic CT systems is semiconducting or insulating, whereas only a small fraction shows conducting properties or even becomes superconducting. As a consequence, research on this material class has 121 http://www.beilstein-institut.de/Bozen2012/Proceedings/Huth/Huth.pdf Beilstein Bozen Symposium on Molecular Engineering and Control May 14 – 18, 2012, Prien (Chiemsee), Germany

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تاریخ انتشار 2013