Transport properties of [2,2]-paracyclophane thin films

Abstract

The transport properties of [2,2]-paracyclophane thin films prepared by molecular beam epitaxy were studied by space-charge-limited current measurements. This organic semiconductor, which has a three-dimensional π-system comparable to that of $C_{60},$ is an interesting material for molecular electronic applications due to its remarkably high mobility and its insensitivity against photo-oxidation. The current–voltage characteristics were recorded using a coplanar electrode geometry which has the advantage, that after deposition no further processing of the organic semiconducting layer is necessary. In polycrystalline films hole mobilities up to ${10}^{\text{−2}}\hspace{0.5em}{\mathrm{cm}}^2 {\mathrm{V}}^{\text{−1}} {\mathrm{s}}^{\text{−1}}$ were observed at room temperature.