Knowledge that can be mastered after finishing this course: basic knowledge and methodology of crystal physical properties, including crystal structure, crystal binding, lattice vibration and crystal thermodynamics theory, energy band theory, semiconductor electron theory; and the application of these theories in semiconductor devices such as field effect transistor and optoelectronic devices.Ability that can be mastered after finishing this course: understanding the mechanical, thermal, optical and electrical properties of crystals and their interaction mechanism from the perspective of crystal structure; exploring and constructing new materials and new devices based on crystal and semiconductor device structure and performance analysis, for the practical application of semiconductor/optoelectronics industry.