Controlling the structure that forms at the interface is non-trivial, since most interfaces are usually grown out of thermodynamic equilibrium. But even when they are grown in thermodynamic equilibrium, the typically available handles -besides the choice of solvent -are deposition pressure and temperature, which can only be varied over a limited range. This range is on one side limited by the thermal stability of the adsorbate molecules and on the other side by the technical capability of the experimental setup. Another possible handle to affect the thermodynamic stability is to apply an electric field. Most experiments employing electric fields during growth have been performed for either (single) crystals or thin films. Therein, improved morphological characteristics of the prepared samples (increased grain sizes, crystal orientation, etc.) were found, which translated to improved bulk properties such as higher charge carrier mobilities, threshold voltages and improved thermoelectric properties. In these cases, the electric field either aligns the molecules in a specific direction or modifies the intermolecular interactions, which gives rise to changes in morphology or structure. However, for many modern nanotechnology applications, relevant properties are mostly determined by the interface, i.e., the first layer of an (organic) molecule on a (metallic) substrate. Here, the application of an electric field would not only modify the intermolecular interactions, but also the interaction of the molecules with the substrate.