The Silicon Wafer has
been doped; the n-type by the, where the As atoms in. The doping elements are
the n-type extrinsic which is produced through the Silicone bye the n-type of the
group VA, form examples the possible elements is As, P and Sb. The p-type SiC wafer
is implanted by the donors to convert the region of n-type implanted. The
conditions of the Si crystal Wafers in the microelectronics is normally
controlled through the surface of etching as well as oxidizing at the high
temperature.
What is the doping
concentration?
The field
penetrates into the semiconductors through the amount which depends the doping concentration.
By the irradiations for an acceptors as well as donors which is generated by the
bulk amount, this effect leads the bulk amount of effective dipping
concentration.
The
column is illuminated with HeNe laser perpendicular to the 2 micron dimension.
It has an optical power of 3mW and a uniform circular spot size 1mm in
diameter.
Question 2
Diffusion
Find the activation
energy and diffusion factor for each of the elements.
How long does it
take each of elements to diffuse through a 500 micron thick wafer at 100 ?
Consequence of Semiconductor
industry
Semiconductors are
the brain of the modern electronics’; in the economics growth. In the advance
communications the Semiconductors is computing’s, health care, transportations,
for the clean energy in the different applications. For the specified regions
of the silicon’s the substrates as well as the diffusion takes place the high
temperature. The silicone penetrations is calculated plus the temperature which
is very high are the dopants atoms is the alter of the penetrations of water
surface.
Question 3 (Ideal
Gas Law)
Volume = 1cubnic
meter
Temperatures =
25cm= 0.25m
r= 0.1nm= 0.1
Vacuums path required?
Question 6
Static Dielectric
constant of water:
The static
dielectric constant of water is 78 at room temperature. It decreases to 20 at f
= 40 GHz. If the optical high frequency dielectric constant is 5 what is the relaxation
time of water
Cole-Cole plot
The classical
theory of Debye for the single mechanism is and the Debye equation becomes
Inner conductor
temperature
Question 8(a).
As according to the
given data
Number of turns=12
Current=10A
Magnetic field=?
If the cross
sectional area = 0.2 and the number of turns is 96 than we have to find the
inductance.
L=?
We know that
So, we have to tell
that the material as magnetically soft or hard. Higher magnetic contribution is
provided by the material so the susceptibility is higher.
Answer8 (d)
We have to calculate
the energy absorbed per cycle. As the absorbed energy is very small just equal
to the zero. As we know the condition that is given in the question that when
the magnet is saturated the current in the coil is increased, to the same
negative value reversed after that it returned to Zero.
Answer 8 (E)