Inter-layer Charge and Energy Transfer in Layered Heterojunction Devices

Abstract

Two-dimensional layered materials and their vertical heterojunctions offer unprecedented opportunities to manipulate carriers at nanometer length scale through atomically sharp junctions. These heterojunctions exhibit efficient and ultra-fast inter-layer charge and energy transfer, which can be exploited in device applications of new paradigm. In this paper, we show examples of (1) inter-layer charge transfer in demonstrating a highly efficient floating gate photodetector, and (2) inter-layer non-radiative energy transfer in demonstrating strong luminescence enhancement.