Figure 6.2

  

Problem 4: (a) Construct a composite energy-band/circuit diagram analogous to Fig. 6.2 in the book that provides an overall view of carrier activity inside a forward-biased pn junction diode. Write a paragraph on the charge transport mechanism for such diode. In which biasing region does the avalanching process take place? Explain the charge transport mechanism with the help of energy band diagram. (b)