Light Generation of Electron Hole Pairs

If you want to see more of these videos, or would like to say thanks for this one, the best way you can do that is by becoming a patron - see the link above :). And a huge thank you to all my existing patrons - you make these videos possible.

In this video, I go over the process of generation of electron/hole pairs using light, and how to model that using differential equations.

This is part of my series on semiconductor physics (often called Electronics 1 at university). This is based on the book Semiconductor Physics and Devices by Donald Neamen, as well as the EECS 170A/174 courses taught at UC Irvine.

Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.

[sallyportillo]

You are a very good teacher, I can rewind back to absorb the information.

[sallyportillo]

It is really a state of the art mind to design a technology that communicates with each other through electric current and transmission.

[sallyportillo]

You have explained in the illustration concerning the photons excitation of the electrons to jump over the gap and be in the conducting band. I am designing a media of photon as big or bigger than the gap. When the light reflects on it, the photon frequency of sunlight and daylight will have a singular frequency of photon.

[jgxdsdh]

Is Gl the representation of the total number of generated electron-hole pairs, since it was the integration of the generation rate? Was the integral of G(z) with respect to z?

[izBrnDD]

Hi! I'm watching your videos to help me study semiconductor physics at my university, and it happens, from time to time, that he gives us the intensity of the light to calculate the total current, said that we have all the data needed to calculate the non-light-related current, how do I calculate the G0? What's that constant k about? Is it the propability of a photon to generate a e-h pair?

[tamaszeffer]

I=Io exp(..), you say total light at as the function of z (1:15), dou you mean total transmitted through the thickness of z?

[gehjbrw]

5:08, shouldn't we integrate G(z) and also divide by "d" the thickness, units of both the equations in the box is not the same

[lucastadeu]

Which book do you recommend for a better understanding of this initial part about photoconductivity?

[ashlynnundlall]

I don't understand how you went from G(z) to GL could you perform the actual integration sir?