7. Consider a uniformly doped GaAs pn junction at T =300 K. The junction capacitance at...
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7. Consider a uniformly doped GaAs pn junction at T =300 K. The junction capacitance at zero bias is C'(0) and the junction capacitance with a 10V reverse-biased voltage is C'(10). The ratio of the capacitances is: C'(0) C' (10) = 3.13 = Also under reverse bias, the space charge width into the p region is Xp is the total space charge width. Determine (a) Vi and (b) Na, Nd. Hint; the capacitance under reverse bias is given by: C' = where w = x + xp = W 2.Es Vbi 1 q L (+/-) Na 0.2 w where w 7. Consider a uniformly doped GaAs pn junction at T =300 K. The junction capacitance at zero bias is C'(0) and the junction capacitance with a 10V reverse-biased voltage is C'(10). The ratio of the capacitances is: C'(0) C' (10) = 3.13 = Also under reverse bias, the space charge width into the p region is Xp is the total space charge width. Determine (a) Vi and (b) Na, Nd. Hint; the capacitance under reverse bias is given by: C' = where w = x + xp = W 2.Es Vbi 1 q L (+/-) Na 0.2 w where w
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