Under Moore's law, electronic devices have been increasingly miniaturized over the years, leading to issues such as short-channel effects and an extreme increase in power dissipation. At the same time, future miniaturization of solid-state devices could reach the physical limit of scaling, with dimensions comparable to de Broglie's wavelength. To continue to address the increasing demand for miniaturization, high performance, and low power consumption, research efforts moved on technologies called "Beyond CMOS" including molecular electronics, based on the idea of using single molecules as electronic components. Among these molecules, fullerenes are distinguished by their cage-like structures and their capacity to encapsulate atoms or clusters inside.