The purpose of this lecture is to that the electronic and heat properties of solid, crystal should be understand by using physics laws. And also, The background is done for future work.

Nearly free electron model and Bloch function, Wave equation of electron in a periodic Potential and Kronig Penney model, Energy band gap and classification of electronic features of solids, Equations of motion in semiconductor, Intrinsic carrier concentration, Band structure of some semiconductor, Impurity conductivity and the effect of this on some semiconductor materials, Fermi surface and construction of Fermi surface, Calculation of simple energy band diagram : Tight binding method, Investigation of dielectric properties of electron gas, Superconductivity and introduction of high TC superconductor, Investigation of some dielectric and magnetic properties, The concepts of Plasmons, polaritons, polarons and exiton, Low dimension systems and introduction to nanotechnology