What are density of energy staste in Matel? Derive an expression for density of energy state and hence obtain fermi energy of ametal.

Q: If an electron is travelling in a one dimensional crystal of length L, and lattice constant a, what…

A: In Direct Band Gap Semiconductor, the bottom of the conduction band and the top of the valence…

Q: The atomic radius of silver which crystallizes in FCC structure is 0.14nm. Calculate the Fermi…

A: Atomic radius of Ag=0.14 nm In FCC structure,  Number of corner atoms=8 (each atom contributes 1/8…

Q: Using diode equation, find the p-n junction Silicon diode current for a forward bias of 0.2 V at…

A: To find: Diode current using, diode equation Given, Io=1.25mA V=0.2V T= 285oK η=2, for SiVT=KTe=T(in…

Q: 3. Calculate the thermal equilibrium electron and hole concentrations in Si at T=300K. of N. and Ny…

A: Given, T=300 KNC=2.8*1019 cm3Nv=1.04*1019 cm3

Q: B/ what are effects impurity atom is added to intrinsic semi-conductor on energy gap.

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Q: t a particu

A: The figure is given as,

Q: Germanium (Ge) has a bandgap energy of 0.66 eV, an effective electron mass of m,"=0.08m,, and an…

A: Given: Band gap Energy,EG=0.66eV=0.66×1.6×10-19JEffective mass of electron,me*=0.08meEffective mass…

Q: Spontaneous emission spectrum of a certain semiconductor is given by Rsprv) = Ko x'm* X : e…

A: The peak emission occurs at maximum wavelength given by the Wein's displacement law For obtaining…

Q: 6l An n-p-n transistor having aurrent gain a=0.90 is connected in the CB mode and gives a reverse…

A: Given: Current gain=α=0.90 Reverse saturation current=Ico=15μA=15×10-6A Emitter current=4mA=4×10-3A

Q: Can semiconductors explain the difference between conductors and insulators? Why not graph your…

A: Certainly! A semiconductor is a type of material that has electrical conductivity between that of a…

Q: (Answer by true or false) In N-type the Fermi level rises to conduction band

A: In N-type the Fermi level rises to conduction band

Q: What is Fermi Deric probability of level above of Fermi level by 0.25 ev if temperature is 289^0

A:

Q: Draw the schematic diagram showing the energy level alignment of metal-semiconductor and…

A: In case (a), after the contact of metal-Semiconductor, the figure is mentioned below,

Q: Calculate the In composition for the alloy InGaN which have a band gap needed to produce blue light…

A: The band-gap for the indium-nitride (InN) is E1=0.7 eV and the band-gap for the Gallium-nitride…

Q: 4. A silicon pn junction has the following doping condition: 10¹6 cm³ at n-type side and 107 cm at…

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Q: K whose oltzmann

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Q: calculate the thermal equilibriumi concentrutin of electron and holes Fora given fermi enersy…

A: The change in the Fermi level is a function of a donor and acceptor  impurity concentration that are…

Q: What is a III-IV compound semiconductor? Provide a couple of  binary/ternary examples and…

A: An alloy which contains elements from groups III-V in the periodic table called III-V compound…

Q: In a crystal of salt, an atom of Na transfer an electron to Cl formed an ionic bond. The resulting…

A: Electrostatic force is fundamental force. It depends on 2 charges and distance between them. Force…

Q: Discuss PN junction diode and explain the barrier potential across the junction?

A: A PN-junction diode is formed when a p-type semiconductor is fused to an n-type semiconductor…

Q: Why the electrons in fermi level not absorb energy??

A: Fermi level is the term used to describe the top of the collection of electron energy levels at…

Q: rite the determination of exciton, an excited state formed in an organic semiconductor. Also, what…

A: ExcitonIn some applications it is useful to consider electronic excitation as if a quasi-principle,…

Q: Plot out the Band Structures and the o-T curve of p-type semiconductor: 400K т

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