: Understanding the P-N junction and its characterization.
The physics of drift, diffusion, and the PN junction hasn't changed. If you cannot understand Kano’s explanation of depletion capacitance, you will never understand a modern GaN HEMT. semiconductor devices by kanaan kano pdf
If you are hunting for the "semiconductor devices by kanaan kano pdf," here is what you can expect inside the typical 1990s edition (ISBN 0-13-805326-7): : Understanding the P-N junction and its characterization