The Effect of Chemisorbed Quantum Dot Size at Graphene on the Charge Transfer

The size of quantum dots significantly influences the chemisorption process at graphene surface, affecting adsorption strength, interaction dynamics and overall performance in various applications. This relationships is primarily driven by quantum confinement effects and surface area variation. Chemisorption of quantum dots onto graphene introduces new pathways for charge transfer, where electron flow can occur due to differences in the Fermi level of graphene and the energy states in the QDs. Based on Newns—Anderson model, the chemical adsorption of spherical quantum dot at graphene depending on its size and normal distance between them were examined. Through a self-consistent computational scheme, the determination of occupation numbers, energy-level positions solved numerically.