Write the name of two processes involved information of p-n junction.

Draw the Energy bands 'diagrams for a (i) pure semiconductor , (ii) insulator , How does the energy band, for a pure semiconductor , get affected when this semiconductor is doped with (a) an acceptor impurity (b) donor impurity ? Hence discuss why the 'holes' and the 'electrons' respectively, become the 'majority change carries' in these two cases ? Write the two processes involved in the formation of p-n junction.

Explain the two processes involved in the formation of a p-n junction diode. Hence, define the term 'barrier potential'.

Write the two processes that take place in the formation of a p-n junction. Explain with the help of a diagram, the function of depletion region and barrier potential in a p-n junction.

(a) Explain with the help of suitable diagram , the two processes which occur during the formations of a p -n junction diode . Hence , define the terms : (i) depletion region and (ii) potential barrier : (b) Draw a circuit diagram of a p - n junction diode under forward bias and explain its working .

In forward biasing of the p-n junction:

The drift current in a p-n junction is

Name the process involved in figures (a), (b) and (c).

The P-N junction is-

The diffusion current in a p-n junction is

The diffusion current in a p-n junction is