1. Elementary Properties of Semiconductors.- 2. Energy Band Structure.- 3. Semiconductor Statistics.- 4. Charge and Energy Transport in a Nondegenerate Electron Gas.- 5. Carrier Diffusion Processes.- 6. Scattering Processes in a Spherical One-Valley Model.- 7. Charge Transport and Scattering Processes in the Many-Valley Model.- 8. Carrier Transport in the Warped-Sphere Model.- 9. Quantum Effects in Transport Phenomena.- 10. Impact Ionization and Avalanche Breakdown.- 11. Optical Absorption and Reflection.- 12. Photoconductivity.- 13. Light Generation by Semiconductors.- 14. Properties of the Surface.- 15. Miscellaneous Semiconductors.- Appendix: Physical Constants.- References.