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Unformatted text preview: as p ( x ) = (1 x 10 18 cm " 4 )(2.5 m " x ) , where x is the coordinate in the direction of the concentration gradient. The donor concentration in the region is N d = 5x10 17 cm3 . a. Find the hole diffusion current density in the region. b. Plot the electrostatic potential along the region. 3. Consider a pn junction, with pside doping of N a = 10 15 cm3 and nside doping of N d = 5x10 16 cm3 . a. Determine the builtin voltage b for this junction. b. Plot the potential across the junction. c. Determine the widths of the depletion region on each side of this junction....
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This note was uploaded on 04/01/2008 for the course EECS 105 taught by Professor Mingwu during the Spring '06 term at University of California, Berkeley.
 Spring '06
 MingWu
 Computer Science, Electrical Engineering

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