Semiconductor Optoelectronics by Prof. M. R. Shenoy, Department of Physics, IIT Delhi. For more details on NPTEL visit nptel.iitm.ac.in
Пікірлер: 64
@b.k.kashyap36234 ай бұрын
prof. Shenoy is still teaching(Optical Electronics) at iit Delhi & We had a quiz last week😃.
@anmoltiwari2335 жыл бұрын
The intro is like we going to watch a video of TOM & JERRY
@Eshi67675 жыл бұрын
This is so funny
@aks66574 жыл бұрын
,🤣🤣🤣🤣
@sanskarkumar64844 жыл бұрын
😂😂
@thetrend000 Жыл бұрын
😂😂
@selvanambi62798 ай бұрын
Mexicano by luis cobos Royal Philharmonic
@halilibrahimcetin94482 жыл бұрын
Hi, i'm a student at Bosphorus University Istanbul. Your lectures on semiconductors are 1000x better than our incompetent lecturer could you consider lecturing at my university? Thank you😂 The way he is conveying the topic is adorable.
@MuhammadAli-px1ob5 жыл бұрын
He definitely is an awesome teacher! This is one of the best lectures i have seen!
@miguelaphan585 жыл бұрын
from venezuela, exelente edition..wonderfull teachers.....no doubts, the next first super power INDIA....
@curiousbit92285 жыл бұрын
This professor is Brilliant and very calm!! I love him and his style!!
@CombustingRatsEH5 жыл бұрын
Hi, i'm a student at imperial college london. Your lectures on semiconductors are 1000x better than our incompetent lecturer could you consider lecturing at my university? Thank you
@shanmukhsagi91664 жыл бұрын
Lolz bro aint easy to just go to London and join as a prof in a college..... Moreover he is more needed in India😁
@Unexpectedthings0074 жыл бұрын
Man even icl have incompetent teachers wow
@GhulamNabiDar3 жыл бұрын
K TAKES BILLION VALUES AND YOUR LECTURE 100S OF BILLIONS........... ENLIGHTED SIR THANKS
@satirthapaulshyam77692 жыл бұрын
whenever someone told you it is a soln of ... in qm, assume it they have told you it is a soln of schrodinger eqn . Q1:most of my frnds asking me why these carriers are staying near the bottom of the conduction band? Ans:As all electrons try to get least amount of energy as possible to become more stable thats why they occupy the bottom zone of band and as they are small in number so they can easily conjusted themselves in the lower bottom region of conduction band and we can do a parabolic thinking.and at k=0 the p is zero hence the KE =0
@shashikantmishra44605 ай бұрын
Old is gold❤
@debabratadey9233 жыл бұрын
now i understand the motivation behind density of states
@nihallimbu32504 жыл бұрын
Highly informative lecture.
@newbie80512 жыл бұрын
I'm so happy we don't have to remember these derivations and stuff Anyways nice lectures, funny to see random class shots and see everyone get camera conscious
@curiousbit92285 жыл бұрын
Maybe Kx, Ky & Kz are not independent integral multiples if we are dealing with not a plane wave but a spherical wave.
@MrMarshallAC7 жыл бұрын
I wish that I had Prof. Shenoy as my faculty in 2004 while I studied this subject.
@irtizahasan61077 жыл бұрын
MrMarshallAC I don't
@deepakurup21123 жыл бұрын
Wonderful lecturer 🙏
@gauravbassi58714 жыл бұрын
proud to be an indian
@harithakdas53143 жыл бұрын
Amazing lecture Thank you soo much sir
@MrMarshallAC7 жыл бұрын
The 'k' factor seems similar to the propagation constant in a rectangular waveguide at resonance. The movement of electrons in a unit crystal cell seems similar to the EM wave propagation in a rectangular wave guide in TE mode.
@irfanali-kw5yy Жыл бұрын
really amazing sir
@gauthambekal2356 жыл бұрын
Surperb lec Sir!!!
@hinapatel91293 жыл бұрын
Thank you so much for this wonderful explanation. I have one doubt that When electron is inside the semiconductor, it will move under the influence of external or internal field?
@vinaysiwach97343 жыл бұрын
they move under extenrnal force , only when yu consider mass of electron as effective mass ,
@vinaysiwach97343 жыл бұрын
we use effective mass to isolate electron from internal environment (ie . internal force )
@quantaali5434 жыл бұрын
13:28 lol btw, amazing lecture......
@Paivren5 жыл бұрын
Good lecture. However, there is a mistake: kr is NOT always =Npi. This only holds for points r at the boundary.
@mandlikprajwal466 Жыл бұрын
No it's always true as your wave function should vanish beyond the lattice
@priyanshubansal67763 жыл бұрын
why they show us the faces of audience in between the lecture
@shreyashetty3724 жыл бұрын
Made me to recollect those beautiful memories of Tom and Jerry Those lines I have mentioned in the top are just after watching few seconds of intro...... But the lecture was awesome..... He was teaching a topic that is completely out of world for me...... But even for a second also I never felt that I'm not understanding and its going out of my mind..... May be this is IIT.......
@untold_cambridge6 жыл бұрын
Why the lecture number is missing in title. i think KZbin is updated
@curiousbit92285 жыл бұрын
are Kx, Ky & Kz still independent integral multiples if we are dealing with a spherical wave??
@PhysicsMath5 жыл бұрын
Spherical wave or spherical shell
@akanchhakumari56663 жыл бұрын
how no. of e in VB is same order as no. of atoms in VB. (though a single atom contain minimum two e)
@prathamsahil40292 жыл бұрын
How is this discussion relevant to designing solar cells?
@surajitghosh66199 ай бұрын
So at the origin of E K diagram k is not zero? Here k just have minimum value 41:21 ?
@hassanedds37854 жыл бұрын
I can't understand why 2k.r=N.2pi pls someone help me.
@user-yd1mx3th3u4 жыл бұрын
me too
@quantaali5434 жыл бұрын
Do you agree that there should be integral number of nodes in the standing wave condition? The simple explanation is that when the wave travels from one end to the other and comes back it covers a total angular distance of 2Npi. k.r is the phase, roughly speaking, it is the angular distance covered by the wave in one trip.
@mandlikprajwal466 Жыл бұрын
You cannot show the value of k by movement of electron as k is associated with wave nature of electron in qm @39:00
@amanladdu96642 жыл бұрын
sir yeh 3d me h ya koi or dimension me
@10810909311 жыл бұрын
Prof. Shenoy says that m, n and p cannot be 0. Is that is the case, how can k=0 (gamma point) ever be realized because for gamma point all three k_x, k_y and k_z must be zero, i.e. essentially m, p and q must be zero? Can someone help! Thanks!
@artiyadav78796 жыл бұрын
Yes ,,,,m,p &q are intergers & can take zero value , its just little mistake did by great professor
@curiousbit92285 жыл бұрын
at gamma point k = 0 not because m, n & p = 0 but because wavelength tends to zero
@arfatahmad2855 жыл бұрын
Bro m, p, q can't be simultaneously zero, at least one should be non zero, if this happens then electron will be static inside the crystal which is absurd.
@shantanusaha67847 жыл бұрын
If effective mass is inversely proportional to mobility then how come the electron mobility of Si is greater than the hole mobility? 15:23
@t_a79234 жыл бұрын
I have the same doubt..did you find an answer..please reply..
@akanchhakumari56663 жыл бұрын
@@t_a7923 hole is consider to be slower than electron as movement of holes is based on release and trap mechanism unlike electrons
@t_a79233 жыл бұрын
@@akanchhakumari5666 thankyou
@mandlikprajwal466 Жыл бұрын
It will also depend on relaxation time of carrier
@marcos12899 жыл бұрын
00:20
@ashfaqahmad8340 Жыл бұрын
what is meant by cc?
@imphoton Жыл бұрын
Cubic centimetre
@ashfaqahmad8340 Жыл бұрын
any one let me know ...what is meant by carrierr per cc? cc stand per?