Does anyone know of a good resource for semiconductor physics? I can't find much for it and the textbook isn't much help. Here is a formula sheet and the textbook is an introduction to semiconductor devices by Donald Neamen. I've read the first 150 pages of the textbook and reviewed notes from my prof but physics is just way too complicated. Most symbols have different meanings (some of the equations have "e" as in natural log, others have "e" as in charge of an electron) and I'm not sure what most of the equations are used for. There are many terms I don't understand and cannot find anything about, what is the Fermi-level, band-gap, valence band or the conduction band. If anyone has a good resource to help with this I'd really appreciate it.