Dielectric Properties

Abstract

In this chapter we deal with the dielectric properties of semiconductor nanostructures. The realization of nanodevices usually requires to combine semiconductors with metals, insulators and molecules in a small region of space. The behavior of these systems strongly depends on the complex repartition of the electric field. Many interesting problems are related to dielectric properties: the current—voltage characteristics of a device, the binding energy of a dopant or an exciton, the energy of a carrier in an ultra-small capacitor, the optical properties and many others. Thus, their simulation at the nanometer scale becomes a critical issue for the development of nanotechnologies.