Use schematic techniques such as those illustrated in Fig. 7-3 to describe the hole flow and electron flow in a p-n-p-n diode for the forward-blocking state and for the forward-conducting state. Explain the diagrams and be careful to define any new symbols (e.g., those representing EHP generation and recombination).
![1083_86572db3-fc4d-43fc-8644-4a8c90f41cde.png](https://secure.tutorsglobe.com/CMSImages/1083_86572db3-fc4d-43fc-8644-4a8c90f41cde.png)