Compare a P+-N to a P-N+ junction diodes. If NT=1015 /cm3 for both diodes where NT...
Compare a P+-N to a P-N+ junction diodes. If NT=1015 /cm3 for both diodes where NT is the doping concentration of the lightly-doped side, determine and compare J0. Discuss your answers. Assume
τn = τp = 1 μs.
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Compare a P+-N to a P-N+ junction diodes.
If NT=1015 /cm3 for both diodes
where NT...
Assume a p-n step junction in silicon wi concentration of 2x1016,c? and the n-type material doped...
Assume a p-n step junction in silicon wi concentration of 2x1016,c? and the n-type material doped at 3X10-s,cm3 The intrinsic carrier density is 1.25X101°/cm and all dopants are fully ionized Assume that the effective density of states for silicon is 3.3x10 cm3 for the conduction band and 1.75x101 cm for the valence band. Assume that the temperature is 300K and silicon relative permittivity of 11.7 a. Compute the hole concentration on the n-side and electron concentration th the p-type material...
Assume that the base of a Si p -n-p transistor is doped with 1016 donors/cm3 and...
Assume that the base of a Si p -n-p transistor is doped with 1016 donors/cm3 and the collector with 1015 acceptors/cm. Find the width of the depletion region on the base side of the collector junction for VCB-2 ? and-10 V. If the base width at equilibrium is 1 ??, s the Early effect for this device significant or not? [Hint: Xao(V-2V) 0.18 um.]
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 junction diode with doping concentrations: NA6.5x1015 cm3 and ND 107 cm3 in...
1. Consider a p-n junction diode with doping concentrations: NA6.5x1015 cm3 and ND 107 cm3 in the p- and n-sides, respectively. (a) Calculate the free electron and hole concentrations in both p- and n-sides' neutral regions. (b) Find the barrier height and the built-in voltage. (c) Sketch the energy band diagram of the complete p-n junction. Mark all energy levels including the barrier height and show the energy level values. (d) Calculate the total depletion width under zero bias. (e)...
Q1) A diode has a doping of No- 1019 /cm3 on the n-type side and NA 101/cm3 on the p-type side. W...
Q1) A diode has a doping of No- 1019 /cm3 on the n-type side and NA 101/cm3 on the p-type side. What are the a) width of depletion region, b) width of depletion region in n side, c) width of depletion region in p side, d) junction potential at zero bias, e) junction width at a reverse bias of 13 V, and f) maximum electric field in zero bias just in the middle of the P-N junction at room temperature?...
A p-n junction is created by doping the right side of a piece of silicon with...
A p-n junction is created by doping the right side of a piece of silicon with 1014 atoms/cm3 of phosphorus and the left side with 1018 atoms/cm3 of boron. Assume that the dopants are fully ionized, and assume the junction is at x = 0 with x+ pointed to the right. a) Plot by hand (roughly to scale) an energy band diagram of the junction and label EGAP, EC, EV, EF and EFi. Using the effective density of states, calculate...
For a Si p-n junction with p-type doping of 1 x 10^16/cm3 and n-type doping of...
For a Si p-n junction with p-type doping of 1 x 10^16/cm3 and n-type doping of 1 x 10^19/cm3, calculate the built-in potential Vb at 300K, dark, thermal equilibrium condition. Please show the equations and parameters used in the calculation and the value of Ec-Ef, Ef-Ev, and Vb. Please draw a band structure similar to the one in lecture 5 slide 6 based on your results, please also label Ec, Ev, Vb, and Ef in the drawing.
A Si step junction maintained at room temperature under equilibrium conditions has a p-side doping of...
A Si step junction maintained at room temperature under equilibrium conditions has a p-side doping of Na = 2x1015/cm3 , and an n-side doping of Nd = 1015/cm3 . Compute (a) Built-in potential Vbi (b) Depletion region width W, and xp, xn (c) Maximum electric field at x=0 (d) Electrostatic potential V at x=0 (e) Make sketches of the charge density, electric field, and electrostatic potential as a function of position x
3. Consider a varicap diode made of Si p-n junction is being used in a radio tuning circuit (LC t...
3. Consider a varicap diode made of Si p-n junction is being used in a radio tuning circuit (LC tank) as shown on right. The n-side of the diode has a doping concentration of 2x1016 cm3 and the built-in voltage is 802 mV. Calculate the reverse bias voltage (V) required to tune into the FM station at 106.7 MHz. The junction area is 100 μ㎡ L 220 uH V, Solution We were unable to transcribe this image
3. Consider a...
Applied quantum mechanics 1. Calculate the carrier concentrations (p and n) for Si at 300k for...
Applied quantum mechanics
1. Calculate the carrier concentrations (p and n) for Si at
300k for the following doping concentrations:
2.
(a) ND = 1015/cm3
(b) NA = 1018/cm3
(c) ND = 5 x 1017/cm3
Calculate the majority and minority carriers for each side of
an N+P junction if ND = 2 x 1017/cm3 for the n-side, and NA =
1014/cm3 for the p-side.
Assume the semiconductor is Si and the temperature is
300K.
3. Determine the energy of:
(a)...
Assume a p-n step junction in silicon wi concentration of 2x1016,c? and the n-type material doped at 3X10-s,cm3 The intrinsic carrier density is 1.25X101°/cm and all dopants are fully ionized Assume that the effective density of states for silicon is 3.3x10 cm3 for the conduction band and 1.75x101 cm for the valence band. Assume that the temperature is 300K and silicon relative permittivity of 11.7 a. Compute the hole concentration on the n-side and electron concentration th the p-type material...
Assume that the base of a Si p -n-p transistor is doped with 1016 donors/cm3 and the collector with 1015 acceptors/cm. Find the width of the depletion region on the base side of the collector junction for VCB-2 ? and-10 V. If the base width at equilibrium is 1 ??, s the Early effect for this device significant or not? [Hint: Xao(V-2V) 0.18 um.]
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 junction diode with doping concentrations: NA6.5x1015 cm3 and ND 107 cm3 in the p- and n-sides, respectively. (a) Calculate the free electron and hole concentrations in both p- and n-sides' neutral regions. (b) Find the barrier height and the built-in voltage. (c) Sketch the energy band diagram of the complete p-n junction. Mark all energy levels including the barrier height and show the energy level values. (d) Calculate the total depletion width under zero bias. (e)...
Q1) A diode has a doping of No- 1019 /cm3 on the n-type side and NA 101/cm3 on the p-type side. What are the a) width of depletion region, b) width of depletion region in n side, c) width of depletion region in p side, d) junction potential at zero bias, e) junction width at a reverse bias of 13 V, and f) maximum electric field in zero bias just in the middle of the P-N junction at room temperature?...
3. Consider a varicap diode made of Si p-n junction is being used in a radio tuning circuit (LC tank) as shown on right. The n-side of the diode has a doping concentration of 2x1016 cm3 and the built-in voltage is 802 mV. Calculate the reverse bias voltage (V) required to tune into the FM station at 106.7 MHz. The junction area is 100 μ㎡ L 220 uH V, Solution We were unable to transcribe this image
3. Consider a...
Applied quantum mechanics
1. Calculate the carrier concentrations (p and n) for Si at
300k for the following doping concentrations:
2.
(a) ND = 1015/cm3
(b) NA = 1018/cm3
(c) ND = 5 x 1017/cm3
Calculate the majority and minority carriers for each side of
an N+P junction if ND = 2 x 1017/cm3 for the n-side, and NA =
1014/cm3 for the p-side.
Assume the semiconductor is Si and the temperature is
300K.
3. Determine the energy of:
(a)...
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