Содержание слайда: The most interesting processes begin when semiconductors of p- and n-types are arranged with each other. Since p-type semiconductors have “holes”, and n-type materials have an excess of electrons, a movement (diffusion) of electrons begins between them, which tries to equalize the charge in the compound. Due to diffusion, the connection region of the n-type semiconductor becomes positively charged, and the p-type negatively charged. This happens because in the process of diffusion a part of the n-type compound loses electrons, that is, it becomes positively charged. A p-type region, on the contrary, receives them and becomes negatively charged. As a result, an electric field is formed that prevents diffusion, and an equilibrium position is reached. The area where this process occurs is called the depletion layer. This layer received such a name for the reason that there are practically no mobile charge carriers in it, because of which it does not know how to conduct current.
The most interesting processes begin when semiconductors of p- and n-types are arranged with each other. Since p-type semiconductors have “holes”, and n-type materials have an excess of electrons, a movement (diffusion) of electrons begins between them, which tries to equalize the charge in the compound. Due to diffusion, the connection region of the n-type semiconductor becomes positively charged, and the p-type negatively charged. This happens because in the process of diffusion a part of the n-type compound loses electrons, that is, it becomes positively charged. A p-type region, on the contrary, receives them and becomes negatively charged. As a result, an electric field is formed that prevents diffusion, and an equilibrium position is reached. The area where this process occurs is called the depletion layer. This layer received such a name for the reason that there are practically no mobile charge carriers in it, because of which it does not know how to conduct current.