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Differentiate Between Schottky contacts and Ohmic contacts.
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written 16 months ago by
prajapatijaimin
• 3.0k
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Solution:
| Schottky contacts | Ohmic contacts. |
|---|---|
| It is rectifying contact that allows current to flow one way | It is non rectifying contact. Allows current to flow in forward and reverse direction |
| $\phi_m\lt\phi_s$ for p-type $\phi_m\gt\phi_s$ for n-type | $\phi_m\gt\phi_s$ for type $\phi_m\lt\phi_s$ for n type |
| It refers to metal-semiconductor contact having a large barrier height and low doping concentration ice. less than the density of states in the conduction band or valance band | It is defined as metal contact then has negative contact resistance relative to the bulk or series resistance of the semiconductor. |
| conduction band bands away from the friend and semiconductor get intrinsic in this region | The conduction band is lower than the fermi energy near the metal sem. interface The sem. behaves like a metal in this region |
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