UNIT 4 : SEMICONDUCTOR PHYSICS


UNIT 4

SEMICONDUCTOR PHYSICS


SHORT ANSWER QUESTIONS :

1) Distinguish between intrinsic and extrinsic semiconductors?

2) Energy Band diagrams for conductor ,  Semiconductor , insulator?

3) Compare P-type and N-type semiconductors ?

4) Compare conductors, semiconductors and Insulators ?

5) Short notes on Drift and Diffusion currents ?

6)  Energy Band diagrams intrinsic and extrinsic semiconductors   ?

7) Define doping , forbidden energy gap , Fermi level ?


ESSAY TYPE QUESTIONS : 

1) a) Distinguish between intrinsic and extrinsic semiconductors?

    b) Compare P-type and N-type semiconductors ?

    c) Define energy band ,valance band , doping , Drift and Diffusion currents ?

2) a) Energy Band diagrams for conductor ,  Semiconductor , insulator?    

    b) Short notes on intrinsic and extrinsic semiconductors ?

3) a) Explain the formation of P type and N type semiconductors ?

    b) Compare conductors, semiconductors and Insulators ?

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