Electrical conductivity of organic single-nanofiber devices with different contact materials

The electrical characteristics of morphologically completely defined individual para-hexaphenylene (p6P) nanofibers are investigated with different electrode materials Au, Al, and Cr. Simple quadratic fitting of the I–V measurements along the Mott–Gurney law results in a large range of mobility values, suggesting that the tested contact materials lead to injection limited conduction. We find that Au exhibit the best charge injection properties. A method for fabricating single-nanofiber devices with different anode and cathode materials is applied, with the aim of investigating the electroluminescent properties.