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- Understanding Diode and PN Junction: Silicon vs. Germanium, Characteristics & Equation
Understanding Diode and PN Junction: Silicon vs. Germanium, Characteristics & Equation
Learn about diodes and PN junctions, differentiate between silicon and germanium diodes, understand diode characteristics, and explore the diode equation in this informative lecture recap.
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Asalamu alaikum wa rahmatullah wa barakatuh
In the previous part of the lecture, we took the n-type and p-type semiconductors
If you notice in this way, the p-type semiconductors, you notice this plus charge means the holes, and this minus means the electron
The P-type, or as we mentioned, the majority carrier is the non-paired charges, which are the holes in the P-type.
And the minority carrier, the minority charges, are the minus, this is the minus sign on the electron.
While in the N-type, the majority carrier is the electron, which is the minus sign, and the plus sign, which is the hole, is the minority carrier.
This is a simple review of what we discussed in the previous lecture.
We will return to our lecture this week.
The Fusion, we will know the term.
The second is the diffusion.
The diffusion is the transfer of the cargo from the high density area to the low density area.
It means the transfer of the cargo without external influence.
The transfer is from the high density area to the low density area.
This is the diffusion.
The drift is the interaction that occurs through the application of the movement of the charges
by the influence of a field or external voltage.
So, the diffusion is without external influence and the drift is with external influence.
We will come to a new term, which is the PN junction.
PN Junction is a junction of two pieces, a P and a N.
Notice this shape.
This is the PN Junction.
This is the junction area.
between P and N
PN junction consists of two pieces
P silicon and N silicon
or P germanium and N germanium
this area is called the depletion layer
or depletion region
this is called the PN junction
the truth between PN junction
There are two types of transistors, the P-type and the P-type.
The P-type is the most common type and the P-type is the most common type.
The transistors will go through a section of the circuit.
The transistors will go through from the right to the left, from the P to the N and from the N to the P.
This is what is produced as a result of diffusing current.
The PN junction works in two directions, the first direction is the forward bias junction,
which is the axis with a front direction, and the second direction is the reverse direction.
When we come to the forward bias junction, we will see that the PN junction works in two
These two points will be explained in this way.
Let's go back here.
This is the forward bias junction.
This forward bias junction, here, of course,
the symbol for P is plus, because the holes are the most common.
And here is the negative.
The forward bias, we connect a voltage source,
or an external voltage source, the source from the battery
is connected to P. And the negative from the battery
you're about a man Lee
So, what will happen here?
The positive charges, because this is a positive,
