1. The problem statement, all variables and given/known data You are given a small slice of doped semiconductor material but you do not know whether it is n-type or p-type Explain with the aid of a diagram the physical principles of an investigation which would enable you to identify the type. 2. The attempt at a solution I searched on the net for some decent information on this topic, but most of the images are very similar to each other. Image 1. Image 2: As I understand, a doped semiconductor means an inpure semiconductor, that is intentionally made so in order to be used as an n-type or p-type semiconductor. These two pictures could be used as the answer for the question? Also, how do doped semiconductors looks like? What's the theory about the pictures?