Hello sir, thanks for the explanation. I think in the last part where you showed the 1D well for a hole, it should still be going downwards not upwards as Schrodinger equation, we have only potential energy and it should not matter whether the particle is electron or hole. So to confine a particle, we should be having a well, not a barrier. I am aware that hole is a construct to describe the motion of valence band electrons and therefore am interested in the meaning of the fact that a 'hole is being confined'.
I think the convention is to think of/define the potential term in reference to electrons (not holes). This means, when considering the VB, that the electrons move down from the barrier, leaving holes at the top of the barrier, effectively confining the holes (or absence of electrons).
@@JordanEdmundsEECS form as photon, not necessarily form of visible light? But thing what I wonder that if I have understand right that drop define also energy of that photon and so on it define wave lenght. So what define and limit "depth" of that well? I mean what limits us to make diode what emits UHF or what limits us to make diode what emits x rays?
in case we have GaN-InGaN-GaN , with InGaN bandgap = 1.7 eV , how do we calculate the thickness of InGaN quantum well that modelled by infinite square well
Hi! I really liked your video and it helped me a lot to understand this. I have one question that concerns scattering in heterostructures. I read about that in comparison to transport in bulk material, that there is a reduced scattering potential in a 2DEG, and that is due to a "spacer" between dopant layer and 2DEG. Now this is something that I would like to know more about if you can help me; do you know how does this "spacer" actually works since I understand that it is next to 2DEG interface so it confuses me how did we get 2DEG in the first place, and additionally what does it consist of? I also have one more question - when we make a quantum dot using these heterostructures, it is said that metallic electrodes deposited on the surface of this kind of a structure deplete 2DEG from electrons creating insulating area below the metal patterns and separating quantum dot area from source and drain as well as from gate areas in 2DEG. It would be great if you could explain to me this concept? thanks! :)
So if you just take an electron and stick it in the well it will sit there (ideally forever). If you apply a voltage to the whole system (so you're tilting the well and the bands on either side), then it will tunnel out, this is called "Field emission".
Thanks for your interesting article. My intuition said there is something important about this mechanical effect. This model shows how a field represented by a sheet of elastic material under the right initial conditions naturally form quantized energy levels. From there it was easy to form very stable three dimensional structures using a very minimal amount of material. (similar to the way engineers built large light weight space structures) ua-cam.com/video/wrBsqiE0vG4/v-deo.htmlsi=waT8lY2iX-wJdjO3 You and your followers might find the quantum-like analog useful in visualize nature properties of fields. I have been trying to describe the “U” shape wave that is produced in my amateur science mechanical model in the video link. I hear if you over-lap all the waves together using Fournier Transforms, it may make a “U” shape or square wave. Can this be correct representation Feynman Path Integrals? In the model, “U” shape waves are produced as the loading increases and just before the wave-like function shifts to the next higher energy level. Your followers might be interested in seeing the load verse deflection graph in white paper found elsewhere on my UA-cam channel. Actually replicating it with a sheet of clear folder plastic and tape and seeing it first hand is worth the effort.
I like how you start with why this is relevant and what we use it for. Makes the topic much more engaging!
Nice one, clear and helpful! I wish all my classes were made that way.
Thank you very much sir. I was having such a huge doubt but you solved all my issues :))
Thank you, I fixed all my problems to understand the QWs
My Quantum midterm is Friday and I finally understand thank u sir I love u
Thanks Jordan. Your videos are super helpful!
Thank you very much for this appreciated efforts
Very helpful vid for my efforts to understand VCSELs
cool! Many thanks))) Mb just a small "reservation" at the beginning of the video about the valence and the conductance bands
Well explained!!👏
That ultra-deep bass at 0:00 lol
Hello sir, thanks for the explanation. I think in the last part where you showed the 1D well for a hole, it should still be going downwards not upwards as Schrodinger equation, we have only potential energy and it should not matter whether the particle is electron or hole. So to confine a particle, we should be having a well, not a barrier. I am aware that hole is a construct to describe the motion of valence band electrons and therefore am interested in the meaning of the fact that a 'hole is being confined'.
I think the convention is to think of/define the potential term in reference to electrons (not holes). This means, when considering the VB, that the electrons move down from the barrier, leaving holes at the top of the barrier, effectively confining the holes (or absence of electrons).
Question
when the particles falls in the well does it release energy in the form of light?
is this how quantum dot tvs work?
Precisely.
@@JordanEdmundsEECS form as photon, not necessarily form of visible light? But thing what I wonder that if I have understand right that drop define also energy of that photon and so on it define wave lenght. So what define and limit "depth" of that well? I mean what limits us to make diode what emits UHF or what limits us to make diode what emits x rays?
in case we have GaN-InGaN-GaN , with InGaN bandgap = 1.7 eV , how do we calculate the thickness of InGaN quantum well that modelled by infinite square well
Is there any already existing quantum well in nature(e.g.- In Biology)??
Yes. The human eye.
thx, it was greatly helpful to me for semiconductor
thank you sir i hope you are well
with conservation of energy, on the drop, where does that energy go?
cool video, can you do a video about the subbands, the ones that instead of having discrete energy levels they have this subbands, thanks!
Thank you sir. Very nice and informative video
Hi! I really liked your video and it helped me a lot to understand this. I have one question that concerns scattering in heterostructures. I read about that in comparison to transport in bulk material, that there is a reduced scattering potential in a 2DEG, and that is due to a "spacer" between dopant layer and 2DEG. Now this is something that I would like to know more about if you can help me; do you know how does this "spacer" actually works since I understand that it is next to 2DEG interface so it confuses me how did we get 2DEG in the first place, and additionally what does it consist of?
I also have one more question - when we make a quantum dot using these heterostructures, it is said that metallic electrodes deposited on the surface of this kind of a structure deplete 2DEG from electrons creating insulating area below the metal patterns and separating quantum dot area from source and drain as well as from gate areas in 2DEG. It would be great if you could explain to me this concept?
thanks! :)
wow that's nice explanation
great video..very helpfull
Can they quantum tunnel through the barrier?
So if you just take an electron and stick it in the well it will sit there (ideally forever). If you apply a voltage to the whole system (so you're tilting the well and the bands on either side), then it will tunnel out, this is called "Field emission".
Good explantation
Why do we need quantum well?
I have the same question.
Love it
Thanks for your interesting article.
My intuition said there is something important about this mechanical effect.
This model shows how a field represented by a sheet of elastic material under the right initial conditions naturally form quantized energy levels.
From there it was easy to form very stable three dimensional structures using a very minimal amount of material. (similar to the way engineers built large light weight space structures)
ua-cam.com/video/wrBsqiE0vG4/v-deo.htmlsi=waT8lY2iX-wJdjO3
You and your followers might find the quantum-like analog useful in visualize nature properties of fields.
I have been trying to describe the “U” shape wave that is produced in my amateur science mechanical model in the video link.
I hear if you over-lap all the waves together using Fournier Transforms, it may make a “U” shape or square wave. Can this be correct representation Feynman Path Integrals?
In the model, “U” shape waves are produced as the loading increases and just before the wave-like function shifts to the next higher energy level.
Your followers might be interested in seeing the load verse deflection graph in white paper found elsewhere on my UA-cam channel.
Actually replicating it with a sheet of clear folder plastic and tape and seeing it first hand is worth the effort.
❤
Very good video I am ......
Fermi level