Chapter 5: Carrier Transport Phenomena - FKE
Chapter 5: Carrier Transport Phenomena - FKE
Chapter 5: Carrier Transport Phenomena - FKE
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Microelectronics I<br />
1. Lattice scattering or phonon scattering<br />
At temperature, T > 0 K, atoms randomly vibrate. This thermal vibrations cause a<br />
disruption of the periodic potential function. This resulting in an interaction<br />
between carrier and the vibrating lattice atoms.<br />
Mobility due to lattice scattering, µ L<br />
µ µ<br />
L<br />
∝ T<br />
− 3 / 2<br />
As temperature decreases, the probability of a scattering event decreases. Thus,<br />
mobility increases
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