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P3. For an ideal abrupt silicon (Si) P*N diode with doping concentrations Na = 1 x...
P3. For an ideal abrupt silicon (Si) P*N diode with doping concentrations Na = 1 x...
P3. For an ideal abrupt silicon (Si) P*N diode with doping concentrations Na = 1 x 107 cm3 and N 1 x 105 cm. (a) Find the stored minority carriers density in the N-side neutral region (infinitely long comparing with Lp and Ln) when a forward bias of 1 V is applied. (b) Calculate the hole current density in the region of (a) at x, 0. (Assume the average diffusion length of hole is 5 um the average carrier life...
3. A silicon step junction has uniform impurity doping concentrations of N. 5 x 1015 cm-3 and Nd ...
3. A silicon step junction has uniform impurity doping concentrations of N. 5 x 1015 cm-3 and Nd = 1 x 1015 cm-, and a cross-sectional area of A-|0-4 cm2. Let tao -0.4 s and tpo 0.1 us. Consider the geometry in Figure.Calculate (a) the ideal reverse saturation current due to holes, (b) the ideal reverse saturation current due to electrons, (c) the hole concentration at a, if V V and (d) the electron current at x = x" +...
1. Consider a p*n silicon diode at T-300 K with doping concentrations of N 10 cin...
1. Consider a p*n silicon diode at T-300 K with doping concentrations of N 10 cin and N-101 cm-3. The minority carier hole diffusion coefficient is D 12 cm2/s and the minority carrier hole lifetime is po 10-7 s. The cross sectional area is A 10- cm2. Calculate the reverse saturation current and the diode current at a forward-bias voltage of 0.50v A germanium p* n diode at T-300 K has the following parameters: Na 108 cm-3 N,--1016 cm", ,...
Design an ideal abrupt silicon PN-junction at 300 K such that the donor impurity concentration in...
XXX is 467
Design an ideal abrupt silicon PN-junction at 300 K such that the donor impurity concentration in the n-side N, = 5x1015 cm3 and the acceptor impurity concentration in the p-side N, = XXX × 1015/cm3 Assume that the diode area A-2x10-3 cm2 and 100cm work Note that the values obtained in the calculations may not be realistic as the Matric # varies greatly. The assignment is only to test your understanding, and must be handwritten Determine the...
An important application of PN diodes is their use as photodetectors. The optical radiation creates electron-hole...
An important application of PN diodes is their use as photodetectors. The optical radiation creates electron-hole pairs in the depletion region and regions within the diffusion lengths near the depletion edges. These e-h pairs are collected as a photocurrent. The e-h pairs are generated at the rate GL 1022 cm-3s1. Calculate the photocurrent. Consider a silicon PN diode at 300K with following parameters Equation for photocurrent calculation: AGL (W Ln Lp) A 104 um2 Na = 2 x 1016 cm-3...
Problem 4: An abrupt silicon p-n junction diode has the following characteristics. side n-side N-4x 1016cm N1016cm3 n 1000 cm2/V sec 350 cm2/V sec Area A 102cm2 Calculate the following quantities...
Problem 4: An abrupt silicon p-n junction diode has the following characteristics. side n-side N-4x 1016cm N1016cm3 n 1000 cm2/V sec 350 cm2/V sec Area A 102cm2 Calculate the following quantities: (a) Reverse saturation hole current component (b) Reverse saturation electron current component. (c) Minority carrier concentrations at the edge of the depletion layer, p(0) and pr(0), for a forward voltage of 0.6 V (d) Electron and hole current for the bias condition of (c). (e) Make a rough sketch...
A3. (a) Draw a band diagram and a cross-sectional diagram of an abrupt p-n junction0Marks] with N...
a3. (a) Draw a band diagram and a cross-sectional diagram of an abrupt p-n junction0Marks] with N>N at thermal equilibrium at 300K and label the following: () Diffusion currents, (i) Drift currents (ii) Fermi level, (iv) SCR, (v) QNR, (vi) Contact potential with polarity, (vi) Electric field distribution in the SCR, (vii) Electrostatic potential distribution in SCR, (ix) SCR charges, and (x) SCR penetration into the p-and n sides. (b) In a p'-n junction at 300K, the n side has...
Consider a silicon pn step junction diode with NA-1x1018 cm3 and No 1x1017cm-3, maintained at T...
Consider a silicon pn step junction diode with NA-1x1018 cm3 and No 1x1017cm-3, maintained at T 300K. The minority carrier lifetimes in the p-side and n-side are τη-10-8 s and Tp-10-7 s, respectively. a) Calculate the minority carrier densities at the edges of the depletion region when the applied voltage (VA) is 0.6 V. of the junction, for the applied bias voltage of part (a) densities are equal in magnitude, for the applied voltage of part (a). b) Sketch the...
Problem 3 (25 points) Consider a silicon pn junction at T - 300 K, NA- 1016 cm3, ND-5x1016 cm-3. The minority carrier lifetimes are τα , τ,-1 us. The junction is forward biased with Va-0.5V The minor...
Problem 3 (25 points) Consider a silicon pn junction at T - 300 K, NA- 1016 cm3, ND-5x1016 cm-3. The minority carrier lifetimes are τα , τ,-1 us. The junction is forward biased with Va-0.5V The minority carrier diffusion coefficients are D 25 cm/s, Da- 10 cm2/s n,1.5x1010 cm3 kT 0.0267 Depletion region p-type n-type a) (5 points) Calculate the excess electron concentration as a function of x in the p-side (see the figure above) b) (10 points) Calculate the...
QUESTION 3 What current in microamps do we get with an ideal abrupt junction silicon diode...
QUESTION 3 What current in microamps do we get with an ideal abrupt junction silicon diode with (100 micron)M2 area and doped with acceptors at 6.9 1015/cc, 1000 times more donor doping, and forward bias of 0.52 V. Assume e- & e+ mobilities of 1500 & 500 cmA2/(V*s), and minority carrier lifetimes of 1 microsecond. Vt-0.02585V, Answer should be to two significant digits with fixed point notation.
P3. For an ideal abrupt silicon (Si) P*N diode with doping concentrations Na = 1 x 107 cm3 and N 1 x 105 cm. (a) Find the stored minority carriers density in the N-side neutral region (infinitely long comparing with Lp and Ln) when a forward bias of 1 V is applied. (b) Calculate the hole current density in the region of (a) at x, 0. (Assume the average diffusion length of hole is 5 um the average carrier life...
3. A silicon step junction has uniform impurity doping concentrations of N. 5 x 1015 cm-3 and Nd = 1 x 1015 cm-, and a cross-sectional area of A-|0-4 cm2. Let tao -0.4 s and tpo 0.1 us. Consider the geometry in Figure.Calculate (a) the ideal reverse saturation current due to holes, (b) the ideal reverse saturation current due to electrons, (c) the hole concentration at a, if V V and (d) the electron current at x = x" +...
1. Consider a p*n silicon diode at T-300 K with doping concentrations of N 10 cin and N-101 cm-3. The minority carier hole diffusion coefficient is D 12 cm2/s and the minority carrier hole lifetime is po 10-7 s. The cross sectional area is A 10- cm2. Calculate the reverse saturation current and the diode current at a forward-bias voltage of 0.50v A germanium p* n diode at T-300 K has the following parameters: Na 108 cm-3 N,--1016 cm", ,...
XXX is 467
Design an ideal abrupt silicon PN-junction at 300 K such that the donor impurity concentration in the n-side N, = 5x1015 cm3 and the acceptor impurity concentration in the p-side N, = XXX × 1015/cm3 Assume that the diode area A-2x10-3 cm2 and 100cm work Note that the values obtained in the calculations may not be realistic as the Matric # varies greatly. The assignment is only to test your understanding, and must be handwritten Determine the...
An important application of PN diodes is their use as photodetectors. The optical radiation creates electron-hole pairs in the depletion region and regions within the diffusion lengths near the depletion edges. These e-h pairs are collected as a photocurrent. The e-h pairs are generated at the rate GL 1022 cm-3s1. Calculate the photocurrent. Consider a silicon PN diode at 300K with following parameters Equation for photocurrent calculation: AGL (W Ln Lp) A 104 um2 Na = 2 x 1016 cm-3...
Problem 4: An abrupt silicon p-n junction diode has the following characteristics. side n-side N-4x 1016cm N1016cm3 n 1000 cm2/V sec 350 cm2/V sec Area A 102cm2 Calculate the following quantities: (a) Reverse saturation hole current component (b) Reverse saturation electron current component. (c) Minority carrier concentrations at the edge of the depletion layer, p(0) and pr(0), for a forward voltage of 0.6 V (d) Electron and hole current for the bias condition of (c). (e) Make a rough sketch...
a3. (a) Draw a band diagram and a cross-sectional diagram of an abrupt p-n junction0Marks] with N>N at thermal equilibrium at 300K and label the following: () Diffusion currents, (i) Drift currents (ii) Fermi level, (iv) SCR, (v) QNR, (vi) Contact potential with polarity, (vi) Electric field distribution in the SCR, (vii) Electrostatic potential distribution in SCR, (ix) SCR charges, and (x) SCR penetration into the p-and n sides. (b) In a p'-n junction at 300K, the n side has...
Consider a silicon pn step junction diode with NA-1x1018 cm3 and No 1x1017cm-3, maintained at T 300K. The minority carrier lifetimes in the p-side and n-side are τη-10-8 s and Tp-10-7 s, respectively. a) Calculate the minority carrier densities at the edges of the depletion region when the applied voltage (VA) is 0.6 V. of the junction, for the applied bias voltage of part (a) densities are equal in magnitude, for the applied voltage of part (a). b) Sketch the...
Problem 3 (25 points) Consider a silicon pn junction at T - 300 K, NA- 1016 cm3, ND-5x1016 cm-3. The minority carrier lifetimes are τα , τ,-1 us. The junction is forward biased with Va-0.5V The minority carrier diffusion coefficients are D 25 cm/s, Da- 10 cm2/s n,1.5x1010 cm3 kT 0.0267 Depletion region p-type n-type a) (5 points) Calculate the excess electron concentration as a function of x in the p-side (see the figure above) b) (10 points) Calculate the...
QUESTION 3 What current in microamps do we get with an ideal abrupt junction silicon diode with (100 micron)M2 area and doped with acceptors at 6.9 1015/cc, 1000 times more donor doping, and forward bias of 0.52 V. Assume e- & e+ mobilities of 1500 & 500 cmA2/(V*s), and minority carrier lifetimes of 1 microsecond. Vt-0.02585V, Answer should be to two significant digits with fixed point notation.
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