Semiconductor physics is the professional courses of electronic science and technology and microelectronics science and engineering. The textbook is <Semiconductor physics and devices> edited by Neamen. This course emphasizes the basic concepts and phenomena of semiconductor physics, so that students can easily understand the essence of physics. It also focuses on the combination of theory and practical application, providing a way to quickly learn and understand the basic knowledge of semiconductor. It also provides help for students in the choice of professional direction. The first part is the basic knowledge and properties of semiconductors including introduction, basic concept of crystal (1st chapter), principles of quantum mechanics (2nd chapter), band theory of semiconductors (3rd chapter), The semiconductor in equilibrium (4th chapter), Carrier transport phenomena (5th chapter), Nonequilibrium excess carriers in semiconductors (6th chapter). The second part is two terminal devices including pn junction (7th chapter), pn junction diode (8th chapter), Metal–semiconductor and semiconductor heterojunctions (9th chapter). The third part is three terminal devices including MOSFET (10th chapter), MOSFET:additional concept (11th chapter), Bipolar transistor (12th chapter), Junction FET (13th chapter), Power semiconductor device (14th chapter).