So just like V:BE is across the base and emitter ...
The thermal voltage represented as V:T = kT/q
which points is this voltage across ?

 

The thermal voltage is not a readily measurable voltage between semiconductor terminals (its value is only about 26mV at room temperature).
It appears in the Shockley diode equation which shows the relation between a semiconductor diode junction voltage and current.

kT/q also shows up in the value for re in a BJT as shown here.

 

The thermal voltage is not a readily measurable voltage between semiconductor terminals (its value is only about 26mV at room temperature).
It appears in the Shockley diode equation which shows the relation between a semiconductor diode junction voltage and current.

kT/q also shows up in the value for re in a BJT as shown here.

so it is something intrinsic, i assume.

 

so it is something intrinsic, i assume.

Yes.

 

Is it a sort of measure of how many electrons jump into the conduction band of a material, just from the temperature/ average kinetic energy of the material ?

IDK enough about this stuff, do metals have a thermal voltage ?

In a diode, is it the delpetion layer voltage that would be from what I wrote 1st ??

I wish I had friends IRL to talk science with.

 

IDK enough about this stuff, do metals have a thermal voltage ?

Only AC wideband noise (Johnson–Nyquist noise --

where R is the metal resistance T is the temperature, and Δf is the bandwidth).

 

In an atom, if an electron jumps up to a higher energy, a less bound shell, is there considered an actual voltage difference between inner and outer shell's, or am I mixing up shells with energy levels, and they are in Joules not J/C anyways


What's the voltage between inner and outer shells, I know in QM they are still considered as orbitals of different radii, right ? Sooner or later I'll learn about thermal voltage, I've used it tho in small signal model of BJT

 

In an atom, if an electron jumps up to a higher energy, a less bound shell, is there considered an actual voltage difference between inner and outer shell's, or am I mixing up shells with energy levels

Yes, the energy level changes, not the voltage.

What's the voltage between inner and outer shells,

Again, the difference is energy level, not voltage.

Sooner or later I'll learn about thermal voltage

Temperature is the movement or vibration of the atoms in a material.
In a conductor this also involves movement of the free electrons, which shows as a random AC noise voltage proportional to the conductor resistance, or alternately as a noise current inversely proportional to the resistance (as related by Ohm's law).