*Wow* sir loved your lecture,PLEASE COVER OTHER CHAPTERS AS WELL ,YOUR TEACHING IS #GOD LEVEL, PLEASE SPARE SOME MORE TIME FOR US PHYSICS LOVERS ,IF POSSIBLE.
How each quantum state or orbital can have only one electron means according to Pauli exclusion principle not more than two electrons can exit in a orbital.
A quantum state includes spin as well. So no 2 electron can have same quantum state. The other electron that comes will have a different quantum state i.e. spin will be different while n,l,ml quantum nos. will be same.
Sir , When phosporous is added as impurity ,we know that the electron that doesnt get binded moves to conduction band,why shoudnt we think that when electron jumps off it is leaving a hole at phosporous.
A hole is created only when a covalent bond is broken. The electron that moves to the conduction band is not actually bonded with any other atom. So when it moves to the conduction band, No hole is created.
They are nothing but shells in every orbit of different principal quantum number n = 1,2,3..., each electron occupies one quantum state, out of 2 possible states in s orbital, and so on..
that formation of e-h pair is a function of temperature, say f(T). while the recombination depends on how much e- are available at any instant to combine with hole so recombination is directly proportional to num(electron) and num(holes) recombination is proportional to num(e) * num(h) where num(e) = num(h) = x so for an equilibrium rate of formation of e-h pair = rate of recombination f(T) = k*num(e)*num(h).= k*x*x.......................(i) now consider extrinsic semiconductor, let n-type still the rate of formation of e-h pair is directly proportional to f(T) but now there is already so many electron - conduction band(from P atom)+ due to thermal energy so now in equilibrium f(T) = k* [num(e)+ num(conduction band electron)]*[num(h)] where num(e) = num(h) = y f(T) = k * [y + num(P atom electrons)]*y now y
![CH 22: IIT Delhi: Physics [ IIT-PAL]](http://yt3.ggpht.com/h_UqmPSnnNABofLRoMGSme1TAj4PiZdUY8fVLTzUPQVD7anIQeBrIJeiZXlpmFSfudrdsJcpwA=s48-c-k-c0x00ffffff-no-rj)
*Wow* sir loved your lecture,PLEASE COVER OTHER CHAPTERS AS WELL ,YOUR TEACHING IS #GOD LEVEL, PLEASE SPARE SOME MORE TIME FOR US PHYSICS LOVERS ,IF POSSIBLE.
your smiling is so pleasant sir,,,,,,it helps to forget the fear of physics and your teaching level bound to fall in love on physics.
Godd why would people go to vedantu, byjus and all that having these wonderful lectures free of cost.
Are you tamil
Awesome amazing😍😍😍😍😍
Although lectures are quit long but very easy to understand........
PHYSICS GLORY...... H.C. VERMA Sir...
Physics Lord😌😌😊
Sir, your teaching is really excellent...it's so helpful...
can't believe I am study physics with the great author ❤️🤩
39:13
"I have silicon here, I have silicon there..
Everywhere I have Silicon."
-HC Verma (2019)
Great video as always.
Very informative.
Awesome
All concepts are very crystal clear 👏✊👍👍
Sir ur teaching is very excellent fabulous ur excellent physics faculty
Really helpful 👍👍
Thank you sir
You are great
Really grt way of teaching sir....
Great lecture by god of physics
Owsm sir
nice lecture
Awesome
amazing
why are we not doping silicon with gr 16 or 17 elements ? then conduction electron will be more in Ntype semiconductor.
Ty sir love uh 😘🥰😍
Nice
Tqq sir
How each quantum state or orbital can have only one electron means according to Pauli exclusion principle not more than two electrons can exit in a orbital.
A quantum state includes spin as well. So no 2 electron can have same quantum state. The other electron that comes will have a different quantum state i.e. spin will be different while n,l,ml quantum nos. will be same.
Di this physics lecture enough for jee main and advanced ??
Very conceptual sir..
Sir ,
When phosporous is added as impurity ,we know that the electron that doesnt get binded moves to conduction band,why shoudnt we think that when electron jumps off it is leaving a hole at phosporous.
A hole is created only when a covalent bond is broken. The electron that moves to the conduction band is not actually bonded with any other atom. So when it moves to the conduction band, No hole is created.
What is Ne ??
People who are studying in 2024-25 session?
I dont Understand What does "Quantum States" mean .... Sir has used that term a lot in his lectures...
They are nothing but shells in every orbit of different principal quantum number n = 1,2,3..., each electron occupies one quantum state, out of 2 possible states in s orbital, and so on..
thanks IIT PAL. why students go through kota, unacademy, byjus etc. money hackers if wonderful there teachers are here ??????????
ne.nh=ni2 ye concept smjh nhi aya .can anyone explain more ???
that formation of e-h pair is a function of temperature, say f(T).
while the recombination depends on how much e- are available at any instant to combine with hole
so recombination is directly proportional to num(electron) and num(holes)
recombination is proportional to num(e) * num(h)
where num(e) = num(h) = x
so for an equilibrium
rate of formation of e-h pair = rate of recombination
f(T) = k*num(e)*num(h).= k*x*x.......................(i)
now consider extrinsic semiconductor, let n-type
still the rate of formation of e-h pair is directly proportional to f(T)
but now there is already so many electron - conduction band(from P atom)+ due to thermal energy
so now in equilibrium
f(T) = k* [num(e)+ num(conduction band electron)]*[num(h)]
where num(e) = num(h) = y
f(T) = k * [y + num(P atom electrons)]*y
now y
From 45:30 , p type semiconductors
thnx