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Unformatted text preview: Assume that the depletion approximation holds. (a) Calculate W, X no and X po at 300 K. (b) Determine the total positive ion charge in the depletion region. (c) Sketch to scale the charge density (x), electrical field E (x), and electrostatic potential V(x) in the depletion region. Assume that the electrostatic potential is zero at x= 0. (d) Draw the energy band diagram for the device. 3. Refer to problem 1 again. In reality, the alloying process will introduce a much higher concentration of acceptor. Assume that the uniform counter doping is N a = 2x10 19 /cm 3 instead. Determine and plot the contact potential V o and depletion widths W, X no and X po versus temperature ranging from 250 K to 500 K....
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This note was uploaded on 12/01/2011 for the course ECE 340 taught by Professor Leburton during the Spring '11 term at University of Illinois, Urbana Champaign.
- Spring '11