Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
9th Edition
ISBN: 9781305372337
Author: Raymond A. Serway | John W. Jewett
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 43, Problem 41P
(a)
To determine
The lowest frequency photon that can promote an electron from the valence band to
(b)
To determine
The wavelength of the photon.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
The gap between valence and conduction bands in diamond is 5.47 eV.What is the maximum wavelength of a photon that can excite an electron from the top of the valence band into the conduction band? In what region of the electromagnetic spectrum does this photon lie?
The maximum wavelength of light that a certain silicon photocell can detect is 1.11 mm.
(a) What is the energy gap (in electron volts) between the valence and conduction bands for this photocell?
(b) Explain why pure silicon is opaque.
Q#07: The maximum wavelength of light that a certain silicon photocell can detect is 1.11 micrometer (a) what is he energy gap (in eV) between the valence and conduction bands for this photocell (b) Explain why pure silicon is opaque.
Chapter 43 Solutions
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
Ch. 43.1 - For each of the following atoms or molecules,...Ch. 43.2 - Prob. 43.2QQCh. 43.2 - Prob. 43.3QQCh. 43 - Prob. 1OQCh. 43 - Prob. 2OQCh. 43 - Prob. 3OQCh. 43 - Prob. 4OQCh. 43 - Prob. 5OQCh. 43 - Prob. 6OQCh. 43 - Prob. 7OQ
Ch. 43 - Prob. 1CQCh. 43 - Prob. 2CQCh. 43 - Prob. 3CQCh. 43 - Prob. 4CQCh. 43 - Prob. 5CQCh. 43 - Prob. 6CQCh. 43 - Prob. 7CQCh. 43 - Prob. 8CQCh. 43 - Discuss models for the different types of bonds...Ch. 43 - Prob. 10CQCh. 43 - Prob. 1PCh. 43 - Prob. 2PCh. 43 - Prob. 3PCh. 43 - Prob. 4PCh. 43 - Prob. 5PCh. 43 - Prob. 6PCh. 43 - Prob. 7PCh. 43 - Prob. 8PCh. 43 - Prob. 9PCh. 43 - Prob. 10PCh. 43 - Prob. 12PCh. 43 - Prob. 13PCh. 43 - Prob. 14PCh. 43 - Prob. 15PCh. 43 - Prob. 16PCh. 43 - The nuclei of the O2 molecule are separated by a...Ch. 43 - Prob. 18PCh. 43 - Prob. 19PCh. 43 - Prob. 20PCh. 43 - Prob. 21PCh. 43 - Prob. 22PCh. 43 - Prob. 23PCh. 43 - Prob. 24PCh. 43 - Prob. 25PCh. 43 - Prob. 27PCh. 43 - Prob. 28PCh. 43 - Prob. 29PCh. 43 - Prob. 30PCh. 43 - Prob. 31PCh. 43 - Prob. 32PCh. 43 - Prob. 33PCh. 43 - Prob. 34PCh. 43 - Prob. 35PCh. 43 - Prob. 36PCh. 43 - Prob. 37PCh. 43 - Prob. 38PCh. 43 - Prob. 39PCh. 43 - Prob. 40PCh. 43 - Prob. 41PCh. 43 - Prob. 42PCh. 43 - Prob. 43PCh. 43 - Prob. 44PCh. 43 - Prob. 45PCh. 43 - Prob. 46PCh. 43 - Prob. 47PCh. 43 - Prob. 49PCh. 43 - Prob. 50PCh. 43 - Prob. 51PCh. 43 - A direct and relatively simple demonstration of...Ch. 43 - Prob. 53PCh. 43 - Prob. 54APCh. 43 - Prob. 55APCh. 43 - Prob. 56APCh. 43 - Prob. 57APCh. 43 - Prob. 58APCh. 43 - Prob. 59APCh. 43 - Prob. 61APCh. 43 - Prob. 62APCh. 43 - Prob. 63CPCh. 43 - As an alternative to Equation 43.1, another useful...
Knowledge Booster
Similar questions
- For silicon the conduction band minimum is located at 0.49 Å-1 in the [100] direction (X is the Brillouin zone at H00), while the valence band maximum is located at the Γ point (k = 0).a) What is the wavelength and energy of photons needed to supply the required momentum to excite an electron from the Γ point to the conduction band minimum? b) What is the wavelength of photons needed to supply the required energy to excite an electron from the Γ point to the conduction band minimum?c) What limits optical absorption in silicon at photon energies near the band gap?arrow_forwardIn a certain semiconductor, the valence band can be approximated by the function E(k) = Eo ak² and the conduction band can be described by the function E(k)= E₁ + 3k². Here E(k) is the electron energy and k is the wavevector. Plot E(k) for the two bands. What is the bandgap of this semiconductor? Is this a direct or indirect bandgap semiconductor?arrow_forwardK: Estimate the ratio of the electron densities in the conduction bands of silicon (Eg 1.14 eV) and gallium arsenide (Eg = 1.42 eV) at 400 K.arrow_forward
- Question 11: A p-n photodiode is fabricated from a semiconductor with band gap of 2.8 ev. Can it detect a wavelength of 6000 nm?arrow_forwardSilicon is doped with 3×1018 arsenic atoms/cm3 and 8 × 1018 boron atoms/cm3. (a) Is this n- or p-type silicon? (b) What are the hole and electron concentrations at room temperature?arrow_forwardThe effective density of states of a piece of silicon is Nc = 2x1319 cm³ in the conduction band at room temperature. Assume the intrinsic concentration, ni, is 1010 cm3. Suppose 0.1% of the equivalent density of states in the conduction band are filled with electrons at room temperature. (a) What is the doping concentration in the silicon? (b) What is the electron concentration in the silicon? (c) What is the hole concentration in the silicon? (d) What is the value of the Fermi-Dirac function f(E) at the conduction band edge?arrow_forward
- Because of its semiconducting properties, CdSCdS is sometimes used in electronic devices. The band gap energy for CdSCdS is 2.40 eVeV . What is wavelength of a photon with this energy?arrow_forwardAn abrupt silicon pn junction at zero bias has dopant concentrations of Nd = 5 X 1017 cm 3 and N₂ = 1 X 1017 cm-3 at T = a 300K. Determine the peak electric field for this junction for a reverse voltage of 5 V. Emax = O Emax O Emax 3.88 X 105 V/cm Emax 3.21 X 105 V/cm Emax = 1.70 X 105 V/cm 1.35 X 105 V/cm =arrow_forwardWe have a piece of Si (shown below) with dimensions 50 um x 200 um x 0.25 um. The Silicon is doped uniformly with ND = 1014 cm3. What is the resistance of the slab when measured along the length (200 um)? %3| If a light with photonic energy greater than the bandgap of Si were to be shone from the top surface such that it produces uniform hole-electron pairs Ap =An = 5E12 cm-3 throughout the slab, what would be the ratio of the illuminated conductivity vs the dark conductivity? What is the ratio of conductivity due to holes vs the conductivity due to electrons under illumination? How about in the dark? 200 Nmarrow_forward
- Q#04. (a) Calculate the number of atoms per unit area in (100), (110) and (111) planes of in bcc crystal with the lattice parameter of 2.5 angstrom.arrow_forwardSilicon is doped with 3×1017 arsenic atoms/cm3. (a) Is this n-or p-type silicon?(b)What are the hole and electron concentrations at room temperature? (c) What are the hole and electron concentrations at 250 K?arrow_forwardThe mean speed of conduction electron in Cu is electrons1.5 × 106 ms-1 and the frequency of vibration of the copper atoms at room temperature is about 4 × 1012 s-1. Estimate the drift mobility of electrons and the conductivity of Cu. The density of Cu is 8.96 g cm-3 and the atomic mass is 63.56 g mol-1.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning