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 />
Mobility,µ; indicates how well carrier moves due to electrical field<br />
Diffusion coefficient, D; how well carrier moves due to density gradient<br />
Here, we derive relationship between mobility and diffusion<br />
coefficient using nonuniformly doped semiconductor model<br />
Graded impurity distribution<br />
electron<br />
“Einstein relation”<br />
x<br />
nonuniformly doped semiconductor<br />
Energy-band diagram<br />
x<br />
E C<br />
E F<br />
E v
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