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When we talked about the built-in barrier potential of a pn junction, perhaps you thought about measuring it on a disconnected diode in the lab. (Even if you didn’t think of it, you should go ahead and try it). You will find that it doesn’t work. It is worth thinking about why i.e. why can’tContinue reading “Can you measure the built-in potential of a pn junction?”

Charge transport by holes is an important concept in semiconductor physics. In particular, it is important to understand charge transport by holes as different and separate from charge transport by electrons. What makes this a tricky concept is that holes are generally described as the absence of an electron or slightly less informally as unoccupiedContinue reading “Are holes real?”