Q3 (10 points)Consider a silicon semiconductor at T = 200 K. Determine the electron and hole concentrations for thefollowing cases:(i) (3pts) donor concentration is 10¹5 cm³ and acceptor concentration is 4 × 1015 cm³.(ii) (3pts) donor concentration is 10 15 cm³ and acceptor concentration is zero.(iii) (2pts) donor concentration and acceptor concentration are 4 × 1015 cm-³.(iv) (2pts) donor concentration is 10¹5 cm³ and acceptor concentration is 4 × 1010 cm³.

Approach to solving the question: To solve for the electron and hole concentrations in a silicon…

Answered: Q3 (10 points) Consider a silicon…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

1. The following questions concern two hypothetical materials, R for the red curve and B for the blue curve, (see figure below) showing the net interatomic forces as a function of interatomic separation. (6") a) Which material will have a higher modulus of elasticity, and why? b) Which material will have a higher melting point, and why? c) Which material will have a larger coefficient of thermal expansion, and why? Hint: You can integrate graphically. ro Separation Force
At room temperature (20°C) the electrical conductivity of Gallium phosphide (GaP) is 63 (2.m)–1, whereas the electron and hole mobility are 0.24 and 0.057 m²/V-s, respectively. a) Compute the intrinsic carrier concentration for GaP at room temperature, (q=1.6 x 10 -19 c). b) If the energy gap of GaP is 0.92 eV, calculate its conductivity at 70°C (k= 8.62 x 10 eV/K). -5
An optical fiber for telecommunication is made of SiO2 glass (density = 2.20 Mg/m'). How many Si atoms and how many O atoms are present per millimeter of length (L=1 mm) of a fiber 10 um in diameter (d=10 mm)? Given: M(Si)=28.09 g/mole M(O)=16 g/mole Avogadro's Number: AN = 0.6203 (10)24
Copper at 500 °C has 1.10×1015 vacancies/cm³. The atomic weight of Cu is 63.55 g/mol and the density at this temperature is 8.96 g/cm³. Avogadro constant NA ~ 6.022×1023 atoms/mol. Boltzmann constant (K) - 8.62×10-³ ev/atom • K. (a) What is the activation energy required to create a vacancy in Cu? (b) Cu is then cooled to 400 °C. What will be the number of vacancies per cubic centimeter? Assume that the change in the density in the cooling is negligible.
6. If we approximate the atmosphere to be 79% Nitrogen (N2) by volume and 21% oxygen (O2), estimate the density of air (kg/m3) and ppmv at 1 atmosphere and ambient temperatures of 40 C and 450 C. (Atomic weight of nitrogen=14)
Answer the folowing with True or False. Density of a foam material depends on the wall thickness and size of its foam cells. ( ) BCC structure is more densely packed than the FCC structure. ( ) The anion – cation size ratio has an important influence in determining the crystal structure of ionic solids. ( ) CFRP and GFRP are examples of hybrid materials. ( ) The density of a material is determined exclusively by its atomic weight. ( ) Body diagonal in BCC structure has Miller indices of [111]. ( ) The relationship s = Ee is known the Ohms law. ( ) A closed packed triangular plane in FCC crystal has Miller indices of (111). ( )
(a) Calculate the standard free energy change as a pair of electrons is transferred from succinate to molecular oxygen in the mitochondrial respiratory chain.(b) Based on your answer in part a, calculate the maximum number of protons that could be pumped out of the matrix into the intermembrane space as these electrons are passed to oxygen. Assume 25 °C, ΔpH = 1.4;Δψ = 0.175 V (matrix negative).(c) At which site(s) are these protons pumped?
An optical fiber for telecommunication is made of SiO2 glass with a density of 3.2 (g/cm3). Given a 8 mm long and 10 µm diameter fiber. Calculate the number of atoms of Si in the fiber. Given: Avogadro's Number NA = 0.6023 x 1024 (atoms/mole) Molar mass: M(Si)=28.09 g/mole • M(0)=16 g/mole Select one: a. N(si atoms)=2.0153× 1016 b. N(Si atoms)=1.558 × 1016 C. N(Si atoms)=3.464x 1015 d. N(si atoms)=5.195 x 1012 e. N(Si atoms)=5.195 x 1015
Deel B: 40 Punte: Part B: Q1.) Consider the unit cell of Mg as shown below : Beskou die Mg eenheidsel hieronder Mg HCP structure HDG struktuur Atomic radius 0.160nm Atoom radius Atomic weight 24.31g/mol Atoommassa c/a ratio / | verhouding 1.624 НСР a) Calculate the lattice parameter of this unit cell; Bereken die roosterafmeting van die eenheidsel
4. Square lattice. Consider a square lattice in two dimensions with the crystal potential U(x, y) = -4U cos(27x/a) cos(2ny/a). Apply the central equation to find approximately the energy gap at the corner point (π/а,л/a) of the Brillouin zone. It will suffice to solve a 2x2 determinantal equation.
Q1.) Consider the unit cell of Mg as shown below : Beskou die Mg eenheidsel hieronder Mg HCP structure HDG struktuur Atomic radius 0.160nm Atoom radius Atomic weight Atoommassa c/a ratio / verhouding 24.31g/mol 1.624 НСР a) Calculate the lattice parameter of this unit cell; Bereken die roosterafmeting van die eenheidsel
Silver (Ag) has the FCC crystal structure. The atomic radius is R =D0.144 nm and the atomic mass is M = 107,87 g/mole. What is the density of Silver in g/cm? Given: Avogadro's Number NA = 0, 6023 x 10 (atoms/mole) Select one O a. 5.30 Ob.76 Oc 3711 Od 14.32 e 10.60

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS