Lecture9(1)

Plotplot electrostatic potential v and e field e fvor

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Unformatted text preview: d E-field, E, fvor thexcase shownshown be electrostatic potential, V and E vs. x ersus for the case below 1. 2.  Compare thethe K.E andP. E of the 3 3 particle shown below 2. Compare K.E and P.E of the particles shown below. Instructor: Mohamed Mohamed EE 332 Spring 2013 At Equilibrium Fermi-Level is FLAT! At Equilibrium Fermi-Level is Flat At Equilibrium (i.e. no external perturbation…zero current) the Fermi Level is Flat spatially: dEF 0 dx Instructor: Mohamed Mohamed EE 332 Spring 2013 HHow does applying a bias change the ow Does Applying a Bias Change the e Band Diagram and Fermi Level Energy nergy band diagram and EF? Applying a voltage will get us out of equilibrium dEF 0 dx • Fermi Level of the side with higher voltage will have a lower electron energy (Recall: Potential Energy = -qV) • The difference between the fermi energies EF1 is important and not their absolute positions. Instructor: Mohamed Mohamed EF2 EE 332 Spring 2013...
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This document was uploaded on 02/18/2014.

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