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1. Using the equation p-n+ N; – N = 0 and assuming ND = Np and N4 = N4, calculate and plot (a) n versus T , (b) n versus 1/T, and (c) Ef-E¡ versus T for Si for 250 K

1. Using the equation p-n+ N; – N = 0 and assuming ND = Np and N4 = N4, calculate and plot (a) n versus T , (b) n versus 1/T, and (c) Ef-E¡ versus T for Si for 250 K

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1. Using the equation p-n+ N – N = 0 and assuming ND = Np and N4 = N4, calculate and plot (a) n versus T , (b) n versus 1/T, and (c) Ef-E¡ versus T for Si for 250 K <T< 750 K. (d) From the n versus 1/T plot determine the activation energy E4 in eV, given by n= noexp(- E4/kT) in the region of the curve where n varies with 1/T. For n¡ use n, = 9.15x10" (T /300)² exp(-0.5928/ kT') with T in K, Np=2x10'5 cm³ and NA= 5x104 cm³. k = 8.62x10° eV/K. Use a semilog plot for n versus T with n on a log scale and T on a linear scale.
Transcribed Image Text:1. Using the equation p-n+ N – N = 0 and assuming ND = Np and N4 = N4, calculate and plot (a) n versus T , (b) n versus 1/T, and (c) Ef-E¡ versus T for Si for 250 K <T< 750 K. (d) From the n versus 1/T plot determine the activation energy E4 in eV, given by n= noexp(- E4/kT) in the region of the curve where n varies with 1/T. For n¡ use n, = 9.15x10" (T /300)² exp(-0.5928/ kT') with T in K, Np=2x10'5 cm³ and NA= 5x104 cm³. k = 8.62x10° eV/K. Use a semilog plot for n versus T with n on a log scale and T on a linear scale.
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