I would've regretted in my future if I hadn't seen these videos right now. It feels so plausible to do everything that he says. I am grateful for all of your work. Thanks a lot.
Your videos are like the God of Semiconductors. You cover all the good stuff from my course in Optoelectronics, your explanations are on point. Very easy to understand. I would recommend your videos any day.
Sir just questions come in your mind similarly many question arises in my mind also but i donot have enough knowledgeble teacher to answer my questions .
The issue I have is the f(T) being the same for intrinsic and extrinsic scenarios. This quantity only depends on temperature because of the way it is written. But it must also depend on the element. I would have thought if the Si is doped with something, like P, then rate of generation would change. So, is it because the doping rate is only 1 per million that f(T) can be considered the same?
I have a doubt , electrons and holes both contribute towards conduction. Then, if electrons are increased by10^6 times and holes are decreased by 10^6 times how is the conductivity improved?
conductivity increases because number of charge carriers has increased from 2(10^10) to (10^16)+(10^4)≈ 10^16 hence number of charge carriers has increased about a million times.
@@kotaslife667 The important thing to remember is that the doping atoms are immobile. They get a charge, but they don't actually move. However n-type materials will now have lots of moving electrons, and p-type materials lots of moving holes. Holes will move in the same direction of an applied electric fields, electrons in opposite direction. We need to put these two types of material together (to create NP junctions, which he will talk about later) to get the actual effect of unidirectional electrical property, and so then ability to use the system as a switch (we can then even create digital logic with this).
Sir Can you please answer the question that if the number of holes are decreasing by recombination then why isn't the no. of free electrons decreasing by the same number as in recombination electron falls into holes to fill them as explained by you in previous videos It will bea great help if you could clear this
Hello sir!!! As you said that temperature is the same so generation is the same in intrinsic & extrinsic semiconductors. But both the materials are different ryt....so how can generation be same, why generation =k10^(20) for extrinsic also?
Sir, you had mentioned in previous video that no two electrons have same energy level,then how all phosphorus Valence electron occupy same energy sir ?
They don't occupy the same energy level. I know that A straight line is drawn in the video but what that means is a very small band of combined energy levels of phosphorus atoms which is approximately equal to a line but not a single line
I have one thing to ask, isn't it will not obey Pauli's Exclusion principle for the 5th electron level/ donor level since all addition electrons will be on that level once added to the crystal?
You need to go back to the start of the series. Band theory means there's actually many millions (as many as the number of atoms) of different (but close) energy levels making up both the valency band and conduction band. It's a totally different model used with solids.
When talking about electrical properties, we only really care about the number of FREE electrons (they along w/ holes in the case of semiconductors are going to be what carries the charge)
I personally feel he explains much better than other TH-cam channels. Just a personal opinion...
I would've regretted in my future if I hadn't seen these videos right now. It feels so plausible to do everything that he says. I am grateful for all of your work. Thanks a lot.
Not only is the content of the video excellent but your excitement makes me excited for this subject. Thanks Mahesh.
Please upload other chapters also .... specially of modern physics .... Just hats off
just amazing... i am just deeply acknowledged by your knowledge....
Although i didn't come here for the math, this is a video i have already watched 3-4times. Great work, i love your enthusiasm!
Your videos are like the God of Semiconductors. You cover all the good stuff from my course in Optoelectronics, your explanations are on point. Very easy to understand. I would recommend your videos any day.
THIS LITERALLY SAVED MY LIFE, THANK YOU!!!
How sweet physics . Excellent , fabulous, uncomparable. Thanks u a lot sir .
Great content man.
Hope this channel gets popular soon.
Really helpful.
Please conduct some online classes so we can ask some questions for clarity of our confusion.
such a great teacher!!!
You explain it in a brilliant way.
Sir just questions come in your mind similarly many question arises in my mind also but i donot have enough knowledgeble teacher to answer my questions .
heavy underrated channel
Thanks for this playlist
wow this is the best explanation. You are just soooo smart and wonderful. Thank you so muchhh for this vid
Excellent analysis👏
Best content sir
Really good
Why so much low views ?
I can't understand it's great
better than lot of JEE channels on youtube
Your videos are helping me a lot. Tysm
That's helpful
Knowledge oozes
his video end like teacher is teaching in classroom and lights out .-.
Great lecture though sir
Your handwriting is so nice
I really wanna see u sir 😮how awsm are u i feel as a friend
The issue I have is the f(T) being the same for intrinsic and extrinsic scenarios. This quantity only depends on temperature because of the way it is written. But it must also depend on the element. I would have thought if the Si is doped with something, like P, then rate of generation would change. So, is it because the doping rate is only 1 per million that f(T) can be considered the same?
Well said.
I have a doubt , electrons and holes both contribute towards conduction. Then, if electrons are increased by10^6 times and holes are decreased by 10^6 times how is the conductivity improved?
conductivity increases because number of charge carriers has increased from 2(10^10) to (10^16)+(10^4)≈
10^16
hence number of charge carriers has increased about a million times.
@@joshuantw Oh! yes....now I understand, don't know what was I thinking at that moment😅
Well, thanks
Same doubt come in my mind also
@@kotaslife667 The important thing to remember is that the doping atoms are immobile. They get a charge, but they don't actually move. However n-type materials will now have lots of moving electrons, and p-type materials lots of moving holes. Holes will move in the same direction of an applied electric fields, electrons in opposite direction. We need to put these two types of material together (to create NP junctions, which he will talk about later) to get the actual effect of unidirectional electrical property, and so then ability to use the system as a switch (we can then even create digital logic with this).
Nh=10 power 6 by 1% P
mind blown!!!!!!
¡Thank you!
yo this is class 12 in india? damn bro!
Awesome
Cheers for the vid my fellow hive puppy. Keep shaggin.
superb
Very very good
Thank you
Thanks sir
"It's like a million million, I don't even know what to call that" How bout a trillion 😂😂😂
greatttttttttttttttttttttttt.....
I have a question: why the number of holes decreases I mean the reason!
Recombination
Sir Can you please answer the question that if the number of holes are decreasing by recombination then why isn't the no. of free electrons decreasing by the same number as in recombination electron falls into holes to fill them as explained by you in previous videos It will bea great help if you could clear this
Hello sir!!! As you said that temperature is the same so generation is the same in intrinsic & extrinsic semiconductors. But both the materials are different ryt....so how can generation be same, why generation =k10^(20) for extrinsic also?
Jee Mains👽🥀
Gracias saludos
Kids read the books
Legends watch Khan academy videos
Sir, you had mentioned in previous video that no two electrons have same energy level,then how all phosphorus Valence electron occupy same energy sir ?
They don't occupy the same energy level. I know that A straight line is drawn in the video but what that means is a very small band of combined energy levels of phosphorus atoms which is approximately equal to a line but not a single line
Is any one seen this video right now 😇😇😇
I have one thing to ask, isn't it will not obey Pauli's Exclusion principle for the 5th electron level/ donor level since all addition electrons will be on that level once added to the crystal?
You need to go back to the start of the series. Band theory means there's actually many millions (as many as the number of atoms) of different (but close) energy levels making up both the valency band and conduction band. It's a totally different model used with solids.
inidans are studying this in high school?????? im in second year uni
if si has 4 electrons in its valence band, how the number of silicon atoms is more than electron number??? it doesn"t make sense for me.
The electron number here are the conduction band electrons (not valence band electrons)
When talking about electrical properties, we only really care about the number of FREE electrons (they along w/ holes in the case of semiconductors are going to be what carries the charge)
Who's here in 2024?
🙋♀️
Telugu raada?