Doping Organic Solids — Its Uses to Probe and to Modify Electronic Properties
Organic compounds in general provide interesting systems for doping experiments. On the one hand, the versatility of the organic molecules in terms of chemical changes can be the source of a variety of isostructural dopants. On the other hand, the relatively low density of the structure is helpful in terms of interstitial doping. Thus, it is experimentally feasible to perform a variety of doping experiments on these compounds. Moreover, these experiments are of great interest for two different reasons: doping can be used to gain understanding of the multitude of phase transitions that occur in organic conductors, and dopants can be used to introduce charge carriers into organic insulators and thus increase their conductivity. The purpose of this article is to demonstrate the usefulness of doping in these two respects by exploring some examples. Let us start with the doping as a probe of phase transitions.
KeywordsMagnetic Susceptibility Structural Phase Transition Organic Conductor Lower Transition Temperature Transverse Banding
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