凯发

This will be an overview of recent developments in the technology of van der Waals heterostructures. The paradigm of heterostructures based on atomically thin crystals has already led to demonstration of tunnelling transistors and diodes with negative differential conductance, high quality field-effect transistors, photovoltaic devices, and even a few nanometre-thin light-emitting diodes. The range of possible materials which could be incorporated into such stacks is very large since there are many layered materials where layers are linked by weak van der Waals forces, which can be exfoliated and combined together to create novel highly-tailored heterostructures. By preparing the heterostructures on elastic and transparent substrates, they can provide the basis for flexible and semi-transparent electronics. The range of functionalities for the demonstrated heterostructures is expected to grow further on increasing the number of available 2D crystals and improving their electronic quality. The rapid progress in technology of chemical vapour deposition will allow scaling up of production of such heterostructures.