Electronic, optical and charge transfer properties of a few quantum dots and MoS2 layer : a density functional theory study

Abstract

Low-dimensional systems, namely, zero dimensional (0D), one dimensional (1D) and two dimensional (2D) systems, recently have been the most interesting materials in nanosciences and nanotechnology because of their unique electronic, optical and mechanical properties and they have attracted huge attention of scientists in the last decade.[1, 2] The appearance of interesting and novel properties in these materials, many of which are not seen in bulk systems, has made them really interesting to investigate. The main reason behind all the interesting properties seen in these systems is because of quantum confinement effects which prevail in low dimensions.[3-9] The motions of microscopic degrees of freedom such as electrons, phonons etc. get constrained due to the reduction of length scale in these materials.