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p-type material at equilibirum

n-type material at equilibirum

h1.  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{1}{q} \frac{?}{?}</math>


<math>E=\int \frac{p(x)}{e}dx</math>