The same kind of semiconducting material used to make an LED can also be used to convert absorbed light into electric energy, essentially operating as an LED in reverse. In this case, the absorption of a photon causes an electron transition from a filled state in the valence band to an unfilled state in the conduction band. If ΔEband = 1.4 eV, what is the minimum wavelength of electromagnetic radiation that could lead to electric energy output?A. 140 nm B. 890 nmC. 1400 nm D. 8900 nm

Q: superconductor. H

A:

Q: The energy-level diagram for the atomic emission spectra of an unknown gas is presented in the…

A: Given :    The energy-level diagram for the atomic emission spectra of an unknown gas is shown :…

Q: Can you explain to me in detail the P-I (Power-Current), PV ( Power-Voltage) and I-V…

A:

Q: The lifetime of the 4P1/2 state of potassium is 27.3 ns.What are the Einstein A and B coefficients…

A: Given: The lifetime of the P124 state of potassium is 27.3 ns. Introduction: Laser action arises…

Q: What is the expected color under ultraviolet light and what is the wavelength of fluorescence for…

A: The energy is given by E=hcλ  --(eq-1) Where E is energy, h is Planck constant, c is speed of light…

Q: What is the Hall effect?

A: Hall effect is the formation of voltage difference across the two sides of electrical conductors.

Q: An emission line of the CO molecule corresponding to a transition from its first excited state into…

A: Frequency = f = 115 GHz = 115 x 109 Hz speed = C = 3 x 108 m/s wavelength= ?

Q: As part of a classroom demonstration, I shine a 650 nm red laser onto a block of Cadmium Sulfide…

A: (a) Band gap of CdSe semiconductor = 2.6 eV. energy of 650 nm photon = h×c/λ = 1.9 eV. Energy of 650…

Q: In this experiment, you will be finding a voltage at which the anode current is maximum. To find the…

A: parabola equation = ; another parabola = ; we have to find voltage value at which maximum current…

Q: This is #4 on the worksheet. How much energy will a 2.5 W laser use in 12 seconds? Your answer: O…

A:

Q: 8:58 A Dr Irfan Yesterday, 8:16 AM 858 42 B/s ASSIGNMENT 2 PHY-4850 ⚫Q1. Write the equation for the…

A: Answer 1.total drift current density can be solved using this formulaJ = nqμEwhere: n is the charge…

Q: The best multi-junction solar cells have an efficiency of about 40% for converting light energy from…

A: Given information: The efficiency of the Solar Cell (η) = 40% = 0.4 The Power consumed by the US (P)…

Q: Question A10 Consider a Si dopant atom in n-doped gallium arsenide. a) Which site (Ga or As) does…

A: Provided for Part A, see Answer. For Part B:Approach and Explanation: Please feel free to reach out…

Q: While studying the spectrum of a gas cloud in space, an astronomer magnifies a spectral line that…

A: Given, Wavelength= 575.05 nm Zeeman shift= 0.043nm   To find- strength of external magnetic field

Q: 18. A material exhibits an “optical band edge” (transition from absorption of light to transmission)…

A: The optical band edge is at 5*10^14 Hz This is 500 THz When the frequencies of visible light in the…

Q: Suppose the bond in a molecule is broken by photons of energy 5.8 eV. ▾ Part A Determine the…

A:

Q: What is the energy of an electron in the n=2 state for an gold atom,   , in units of eV. E = [x]…

A: Given that number of state for an gold atom and We have to determine the energy of an electron in…

Q: how much energy does it take to singly ionize it?

A: