excellent explanation, no body can explain so nicely and effectively. god bless

Doping is dope!

what an awsome teacher u r....loved the way you explained

So very well explained. Thank you for your work.

this is one of the best explanations that i have ever heard

Flawless 👌👌👌👌👌👌👌👌👌

His explanation is so great.Love your voice.

great stuff!!!

Very helpful sir 👍

Really Nice videos Seeing them for about 2 years and everytime I see them my concepts become more sharp. I loved it 🤘🏻❤

Amazing explanation

*THANK YOU* 🙏

Good explanation. I've also seen some other of these videos and they're really helpful. There are more electrons than holes in P type semiconductors. Isn't it how they're involved in conduction that makes them called the majority charge carriers?

How is the acceptor/donor level place in the band energy is decided?

Wow

Sir, is the point for this process of conduction that the electrons present is Ea state can conduct electricity and it now doesn't need to enter the conduction band as it had to in intrinsic ones ?

Owsom content

God level teaching

Sir in extrinsics more holes present in valence band then what is the use.

¡Thank you!

Thankyou.

Sir,why can’t the electrons in the acceptor level jump to the Conductance band, if we used the Group 12 atoms..?

Nice software

Sir, could u please tell me , how the electrons from the valence band ( which is of silicon) , occupy the vacant spaces of acceptor level , which is actually present in the forbidden energy gap( in which electrons of Si atom ) are forbidden to enter...?

@gauravbansal6407

2 жыл бұрын

Now you know the answer ? If yes then please explain me

@bhavyanayak4342

2 жыл бұрын

I have the same doubt

@asmakhatoon6691

2 жыл бұрын

When you added Boron it has its own energy levels that's why

@gauravprajapati4241

Жыл бұрын

Without Boron(the acceptor aka the begger), Si electrons have large forbidden gap, can't cross the gap easily, with boron there is an newly created energy level wanting to be occupied (although this energy level belongs to Boron). Si electrons now have something close to move upto, so they do move at certain temperature. Forbidden band is forbidden until we have an energy level.

Sir, can you explain why the acceptor level and donor level for different elements move towards valance band or conduction band ?

@KhanAcademyIndiaEnglish

5 жыл бұрын

I think that's beyond the scope our syllabus. We need to use quantum mechanics to compute the energy levels of the acceptor and the donors. After doing all the calculations it turns out that group 13 elements have the acceptor level close to valence band and for group 15 the donor level close to conduction band.

@france8607

3 жыл бұрын

@@KhanAcademyIndiaEnglish For group 15, that may be because the electron not involved in bonding has a lot of repulsive force.

Should the doped Boron's energy band be a "band", instead of a line as in the video?

What software does he use? Any ideas?

Is there a playlist that explains the basics up to this video?

@KhanAcademyIndiaEnglish

5 жыл бұрын

Yes. Check the 'semiconductor class 12 CBSE' playlist

A question comes up. With N type doping, electrons move into the conduction band. This is easy to see, But with P type, it appears holes have not moved up there because these are not real particles. And it looks to me as if the electrons coming out to leave holes behind do not move into the conduction band either, but into the acceptor band, which is lower down. So how can conduction occur? Or put it another way, does P-type doped Si have higher resistance than N-type?

in the last video you told that group 16 cannot be used in n type because the donor level of group 16 is too low ,so the V.B electrons can't move to donor level, leaving a hole behind?

@boywithguitar1518

3 жыл бұрын

Let’s forget physics here, if you go by the meaning of donor, it means giving and acceptor means accepting something. So being a donor, it already has extra electrons, why will it accept more? Got my point?

@shotoniphone13

3 жыл бұрын

Donor level should be close to conduction band (it can DONATE easily) Acceptor level should be close to the valence band (it can ACCEPT easily)

Hey can u please tell that how electrons in valence band are mobile and in conduction band immobile..

@electronicswithmadhan1052

3 жыл бұрын

Who says electrons in conduction band are immobile they are also mobile.

@hetpandya1334

3 жыл бұрын

@@electronicswithmadhan1052 No... Basically the electrons in Valence Energy band are immobile as they are covalently bonded with other atoms, while electrons in Conduction energy band are actually free electrons that reached at that energy level due any kind of energy forms... So as they are free they have mobility...

Sir, your teaching can change way of thinking or looking at subjects. Really doing great

Can I get the pdf of this ?

Sir why electrons will go there since it’s forbidden energy gap for silicon electrons

While making this a p type semi conductor why boron is used for si won't there any be size prblm, how will boron fit the picture

@hoffmanmustardoil6191

2 жыл бұрын

Diagonal relationship of B and Si, Which helps B to dope with Si

Sir what will happen if we use germanium or any other semiconductor materials instead of silicon.

@hetpandya1334

3 жыл бұрын

I think the same mechanism is applicable over other elements that are generalised in Semiconductors...

@hoffmanmustardoil6191

2 жыл бұрын

Nothing happens, we need to dope the particular group 15/13 atom which is having least size difference, that's the only difference

why can't the group 13 element Aluminium be used instead of Boron?

@hoffmanmustardoil6191

2 жыл бұрын

Aluminium cannot be doped with Si, but Si can be doped with Aluminium

@catharperfect7036

9 ай бұрын

Possible P-dopants = {B, Al, Ga, In} = all group 13 = trivalent Possible N-dopants = {N, P, As, Sb, Bi} = all group 15 = pentavalent

Hi.. what is the energy level of silicon hole? Is it same as boron? Please reply. Waiting for your reply.

@undefeateddiadem6360

Жыл бұрын

same question

@venkateshsrinivasan3369

8 ай бұрын

Silicon hole in valency band, boron level is slightly above I.e in acceptor level, pls correct me if I made a mistake

3:32 what math are we talking about

@anishaghosh101

3 жыл бұрын

Math related to the equation tells about energy of shell

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