p-type material at equilibirum

n-type material at equilibirum

What happens when you join together p-type and n-type materials?

Gradient in chemical potential causes mass flow (electrons and holes diffuse until a new equlibrium is reached)

• Until <math>\mu</math> is horizontal
• Electric field forms due to the deviation from charge neutrality
• Flux of carriers balenced by the drift flux to achieve steady state

<math>e = \frac

\frac{?}{?}</math>

<math>E=\int \frac

dx</math>