Spatially Controllable Growth and Electrical/Optical Properties of Quantum-Confined Two-Dimensional Heterostructures
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Two-dimensional (2D) heterostructures have recently attracted interest as candidate materials for classical optoelectronics and in quantum information technology. Despite significant research, realizing deterministic, in-plane quantum confinement in synthetic 2D heterostructures at the nanoscale remains challenging. Here, I present a breakthrough by demonstrating the spatially controlled growth of quantum-confined 2D heterostructures. These structures comprise 0D quantum dots embedded within a 2D matrix, achieved through a catalytic conversion reaction on a platinum template. Furthermore, an in-depth investigation into the electrical and optical quantum properties of the resulting heterostructure was conducted. The confined 0D quantum dots within the 2D matrix, coupled with the formation of lateral heterointerfaces, result in novel electronic states in these heterostructures. These emergent states hold significant potential for applications in tunneling transistors and quantum photonic devices.