Others were trying to explain through definition but you were explaining it like a kindergartener could understand thankyou very much for making it easier
Wow, thanks for this very thorough and eminently understandable explanation of such a vitally important concept in semiconductors! I haven't been able to wrap my mind around this all semester but I think I finally get what's going on here. Thanks so much!!!
You are welcome! Glad you are finally able to wrap your head around it, it's probably the most challenging topic in intro semiconductors. I had to learn it several different ways before I finally started to understand what was going on.
4:54 "Since this is the total amount of charge added...." Err no Jordan; since you multiplied the current density by area dimensionally it must be the 'total amount of current added'.
Excellent question. I'm approximating the derivative using a finite ∆V, implicitly assuming that the time derivative is a function of the small volume element. dV would be more in keeping with calculus notation, and would work just as well.
Initially we assume that G=R, but strictly speaking this is only true under steady-state. Transiently, it isn’t true. Additionally, G and R might actually be functions! (Of space or time), and so to solve the continuity equation you need to include their full functional form.
best video in internet world to understand the eqation of continuity
Others were trying to explain through definition but you were explaining it like a kindergartener could understand thankyou very much for making it easier
This stuff is killing me in school. So interesting, but very difficult. Your videos are a godsend. Thank you sir.
Wow, thanks for this very thorough and eminently understandable explanation of such a vitally important concept in semiconductors! I haven't been able to wrap my mind around this all semester but I think I finally get what's going on here. Thanks so much!!!
You are welcome! Glad you are finally able to wrap your head around it, it's probably the most challenging topic in intro semiconductors. I had to learn it several different ways before I finally started to understand what was going on.
incredible video
when dividing ∆V throughout the equation, dp/dt side is not zero, shouldn't there be a 1/∆V on the dp/dt side? @ 6:52
P (total number) goes to p (Number Density or total Number per Volume)
Thanks, I was having the same doubt when dividing by ∆V
very easy to follow. thank you
4:54 "Since this is the total amount of charge added...." Err no Jordan; since you multiplied the current density by area dimensionally it must be the 'total amount of current added'.
Sir, continuity equation relates only minority carriers or it is also applicable to majority carriers?
Great question, it makes some approximations which are only valid for minority carriers.
One question sir. At 3.55, on the left hand side it is dp while on the right hand side it is ∆V. Why not ∆p or dV?
Excellent question. I'm approximating the derivative using a finite ∆V, implicitly assuming that the time derivative is a function of the small volume element. dV would be more in keeping with calculus notation, and would work just as well.
Thanks 🙏
Wow thanks
which program do you use for the notes?
These days I use photoshop, but I used to use sketchbook.
Drift current mrans
Means
@@girivardhangiri4324 maybe the answer is late but the drift current is the current caused by the electric field
why bother subtracting recombination rate and adding generation rate?cuz G=R, they get cancelled
Initially we assume that G=R, but strictly speaking this is only true under steady-state. Transiently, it isn’t true. Additionally, G and R might actually be functions! (Of space or time), and so to solve the continuity equation you need to include their full functional form.
Solar cells as an counterexample where G is larger than R (hopefully haha)