What is the physics to form the energy bandgap in semiconductor? What is the reason the...

What is the physics to form the energy bandgap in semiconductor? What is the reason the Si has smaller energy bandgap than GaN?

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Manojponduru answered 2 months ago

Explain carefully what is meant by effective mass in the context of semiconductor physics. The energy...

Explain carefully what is meant by effective mass in the context of semiconductor physics. The energy band dispersion relation (E vs. k) for a simple one-dimensional monatomic semiconductor of lattice constant a can be written- ? = ?0 [1 − cos(??)] Derive an expression for the effective mass (m*) of an electron in the semiconductor, and sketch how m* varies as a function of k.

(6) In the presence of an applied electric field, the bandgap of a semiconductor effectively ( )...

(6) In the presence of an applied electric field, the bandgap of a semiconductor effectively ( ) (A) Increases with increasing electric field, and decreases with decreasing temperature (B) Decreases with increasing electric field, and increases with decreasing temperature (C) Decreases with increasing electric field, and decreases with decreasing temperature (D) Increases with increasing electric field, and increases with decreasing temperature

Q2 Consider a solar cell made of semiconducting nanocrystals with a bandgap energy of Wg =...

Q2 Consider a solar cell made of semiconducting nanocrystals with a bandgap energy of Wg = 0.67 eV. Determine the theoretical efficiency when the solar cell is exposed to the radiation of a 6000-K black body? Assume that photons with less than 3.3 Wg create each one single electron/hole pair and that those with more than 3.3 Wg create 2 electron/hole pairs each owing to impact ionization. [50 marks]

describe energy band structure and Fermi distribution function of intrinsic semiconductor, n-type semiconductor and p-type semiconductor.

Discuss the energy balance of the Earth as a whole: What form of energy does it...

Discuss the energy balance of the Earth as a whole: What form of energy does it primarily absorb? What form of energy, if any, does it primarily emit? Does it emit substantially less than it absorbs? Which has more entropy, the energy absorbed or the energy emitted?

What is the change in the form of energy that is shown by the change in...

What is the change in the form of energy that is shown by the change in direction of the compass needle when an electric current is passed beneath it? When the magnet is moved inside the coil of wire, what does the Galvinometer indicate? Would making the fixed magnet stronger, have an effect on the amount of current produced?

Where’s the Energy Solution(Mastering Physics Chapter 05: Work and Energy)

In this problem, we will consider the following situation as depicted in the diagram: A block of mass m slides at a speed v along a horizontal, smooth table. It next slides down a smooth ramp, descending a height h, and then slides along a horizontal rough floor, stopping eventually. Assume that the block slides slowly enough so that it does not lose contact with the supporting surfaces (table, ramp, or floor). You will analyze the motion of the block...

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What is the physics to form the energy bandgap in semiconductor? What is the reason the...

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