Chemical bonds and crystal structure of solids, real and inverse lattice, study of crystal structure, examples and applications. Characterization of structure by X-ray diffraction. Lattice oscillations in one and three dimensions, phonons and dispersion branches, phononic density of states. Thermal properties of lattice, specific heat, thermal conductivity of solids. Electronic properties of lattice, carrier density, doping, Scattering mechanisms & conductivity, semiconductor electronic structure. Modification of the electronic structure due to quantum confinement. Modern semiconductor applications.