Lecture11

Ee 332 spring 2013 total current of carrier motions

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Unformatted text preview: −qDP dx D is the diffusion constant, or diffusivity. EE 332 Spring 2013 Total Current of Carrier Motions Total Current of Carrier Motions Total Current = Drift Current + Diffusion Current EE 332 Spring 2013 Band Diagram:Potential & Kinetic Energy Potential & Kinetic Energy Band Diagram: Bar of Si EE 332 Spring 2013 Electrostatic Potential Electrostatic Potential Bar of Silicon Band Bending Variation of Ec with position is called “band bending” E lectric Field EE 332 Spring 2013 Non-Uniformly-Doped Semiconductor Non-Uniformly-Doped Semiconductor •  The position of EF relative to the band edges is determined by the carrier c...
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