Question

What are the ways of manufacturing Microelectronics of semiconductor?

Answer #1

In semiconductor manufacturing, the root causes of defects can
be attributed to
photolithography. Could you explain the reasons?

A manufacturing process produces semiconductor chips with a
known failure rate of 6.9%. If a random sample of 300 chips is
selected, approximate the probability that fewer than
17 will be defective. Use the normal approximation to
the binomial with a correction for continuity. (at least 3 decimal
places)

A manufacturing process produces semiconductor chips with a
known failure rate of 7.5%. If a random sample of 280 chips is
selected, approximate the probability that at most 19 will be
defective. Use the normal approximation to the binomial with a
correction for continuity. Round your answer to at least three
decimal places. Do not round any intermediate steps.

A manufacturing process produces semiconductor chips with a
known failure rate of
7.5%
If a random sample of
275
chips is selected, approximate the probability that more
than
19
will be defective. Use the normal approximation to the binomial
with a correction for continuity.
Round your answer to at least three decimal places. Do not round
any intermediate steps.

You have two undoped semiconductors. Semiconductor 1 has a
bandgap of 1.5 eV. Semiconductor 2 has a bandgap of 2 eV. If the
values of B are equal and the temperature is 600 K, what is the
ratio of the number holes in Semiconductor 1 to the number of (a)
electrons in Semiconductor 1 and (b) holes in Semiconductor 2

Use the web to find out what a "III-V" semiconductor is. How is
this type of semiconductor related to silicon?

Show the effect of temperature on semiconductor materials. Why
is a semiconductor an insulator at ordinary temperature?

In what ways would you say a bank’s balance sheet differs from,
say, a car manufacturing firm’s?

An ideal metal-semiconductor contact is made of a metal that has
?M=4.75 eV, and a semiconductor that has ?=4.00 eV with
ni=1010/cm3, ND=1016/cm3, and EG=1.00 eV; kT=0.026 eV.
(a) Calculate the barrier for electrons in the metal.
(b) Calculate Vbi, the barrier for electrons in the
semiconductor.
(c) Calculate the value of the depletion region width at thermal
equilibrium.
(d) Calculate the maximum electric field.
(e) Sketch the energy band diagram in thermal equilibrium.

For a semiconductor. What is the diffusion equation for holes.
Recombination neglected and start expression from
J=J(diffusion)+J(drift)

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