( a) Consider a Schottky diode at T=300 K that is formed with tungsten on n-type silicon. Assume a doping concentration of Nd=1016 cm^-3 and assume a cross-sectional area A =10^-4 cm^2. Determine the forward-bias voltage required to induce a current of (i) 10 uA, (ii) 100 uA, and (iii) 1 mA.
(b) Repeat part (a) for a temperature of T=350 K. (Neglect the barrier lowering effect.)
Please show reasoning for calculations, thank you!
( a) Consider a Schottky diode at T=300 K that is formed with tungsten on n-type...
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", ,...
Problem 3: MS contact -Vcharacteristics A Schottky diode maintained at T 300K is formed between TiSiz and silicon doped with 101 cm3 phosphorus. The cross-sectional area is 100 μm 100pm-104 cm, a) Determine the reverse saturation current Is, using the measured value of Schottky barrier height given in Lecture Note. Recall from Lecture Note that the conductivity effective masses for electrons and holes in silicon are 0.26mo and 0.39mo, respectively b) Plot the forward-bias diode I-Vcharacteristic on a log-linear scale...
5. There is a Au (gold) n-type InP Schottky barrier diode without knowing the doping on concentration. From reverse bias Capacitance-Voltage measurement, the following data are obtained. What are the doping concentration and the built-in potential? Hint The capacitance of the Schottky diode is similar to that of p'n junction. e(InP) 8.85 x 1014 F/cm [10 pt 12.4, to C (F/cm) Vr (Volt) 3.60 x 10 -1 2,50 x 10 -3
5. There is a Au (gold) n-type InP Schottky...
1. A metal/n-GaAs Schottky Barrier is formed by depositing platinum on n-GaAs. The electron affinity of GaAs is 4.0 eV. The work function of Pt is 5.0 eV. The doping in GaAs is 1E16/cm3, and Nc=5E17/cm3. i) Draw the thermal equilibrium energy band diagram for the structure ii) Calculate the barrier height and the built-in voltage iii) Calculate the depletion width in GaAs, given ε(total) for GaAs=1E-12 F/cm --> w=sqrt((2*ε*Vbi)/(q*ND)) iv) Calculate the depletion capacitance for 1 cm2 area v)...
A silicon pn junction at T = 300 K has the following parameters: Na-5 1016 cm-?, N,-1 1016 cm-3, D.-25 cm3/s, D.-10 cm2/s, ?,0-5 x 10-7 s, and To 1 X 10-7 s. The cross-sectional area is A 10-3 cm2 and the forward- bias voltage is V,-0.625 V. Calculate the (a) minority electron diffusion cur- rent at the space charge edge, (b) minority hole diffusion current at the space charge edge, and (c) total current in the pn junction diode.
An abrupt junction GaAs diode is doped with acceptors on the P-side at a concentration of 1016 cm−3 , donors on the N-side at a concentration of 1017 cm−3 and operated at 300 K. The hole recombination time on the N-side 0.2 µs and the electron recombination time on the P-side is 2 µs. The cross sectional area is 10-2 cm2 a) Calculate the reverse saturation current. b) Calculate the contact potential. e) Calculate the bias voltage needed to obtain...
Problem 7: A silicon diode is asymmetrically doped at ND-10', cm? and N-1016 cm'. (Note that at N 10" the semiconductor is on the edge of degeneracy, but we can assume that non-degenerate carrier statistics are close enough for this problem.) Answer the following questions assuming room temperature. Assume that the minority electron and hole lifetimes are τ.-, 10's. The lengths of the N and P regions are L = 500 μm and 1. >> x,,x . a) Find the...
1-8 pts) An n-type piece of silicon with a length of 1.0 Jim and a cross-sectional area of 0.05 um x 0.05 um sustains a voltage difference of 2.0 Volts between the two ends of the sample. The doping level is 107 cm Assume room temperature i.e. T = 300 K and that the electron mobility is 760 cm / V.sec a) What is the conductivity, o, of the material in ? 12. um b) What is the resistance of...
Thanks....
Question 2 (5 marks) a) State the ideal-diode equation. b) Forward-bias-voltage of V, 0.625 V is applied to a silicon p-n junction with its cross 10 cm2. At T 300 K, it has the following parameters: n, 1.5 x 100 cm3 N, 5 x 1016 cm3 Na-1 x 106 cm D, 25 cm'ls D, 10 cm/s Tao 5 x 10s tpo 1 x 10s sectional area, A Calculate: i) the minority electron diffusion current at the space charge edge,...
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...