Density of states

[@NehaGupta-nz4ol]

Best concise way to make command over edc, Nicely explained without tedious mathematics...

[@cassiusjuan3512]

sorry to be so off topic but does any of you know a way to log back into an Instagram account?? I stupidly forgot the account password. I would love any tips you can offer me

[@bishopzion2510]

@Cassius Juan instablaster =)

[@cassiusjuan3512]

@Bishop Zion Thanks for your reply. I got to the site on google and im waiting for the hacking stuff atm. Takes quite some time so I will get back to you later when my account password hopefully is recovered.

[@cassiusjuan3512]

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[@bishopzion2510]

@Cassius Juan No problem :)

[@brittokhan5278]

Sir you are an amazing talent.

[@aeturipadmini1103]

Great explanation sir

[@shahidnaveed5408]

Sir, you are great. ❤

[@anuj8635]

Great explaination sir .. :)

[@roniadhikari2724]

Awesome Sir ❤️❤️

[@sandeepkisku5419]

Best course for Semiconductor Devices

[@indrashispowali-hf5tk]

Mindblowing

[@usualguy7583]

Links for the notes?

[@megwfc]

so so so so so grateful to you sir, so much grateful. love you❤❤❤

[@Arjuna_insync]

hey have you made the class notes ?

[@RajanGupta-fj8fi]

Sir pdf is not given anywhere. Not in nptel site also

[@Shubhamoulkargmailcom]

Sir please see the equation of no. Of electrons. There should be( Ec-Ef)

[@AMITBAROI-l8k]

Thank you so much,Sir.

[@md.enamulatiq9262]

Sir are you sure that in an intrinsic semiconductor fermi level lies exactly in middle of the bandgap? From textbooks I saw that it depends on hole and electron's effective mass.

[@Neeraj-is1jt]

You are right

[@vivekchary6908]

I think you're right it was taught for us in our institute as well.

[@louerleseigneur4532]

Awesome

[@shreelakshmiguna6276]

If fermi level(50% probablity of finding electrons) is near valence band means then the valence band should have more electrons ,right?

[@shivamraj5375]

Fermi level shifts according to the type of material. It shifts up in the case of n-type semiconductor and it shifts down in the case of p-type semiconductor,so you can't say so .

[@samyakgupta1314]

We are talking about Free e-.

[@akhilrajt]

You have remember the f(e) vs g(s) graph .If the fe is near vb there will be more overlap to vb in fermi level when we extend the

[@Sakshiiiii_Chaudhary]

From where I can get notes

[@logicoverflow1240]

Notes are not available on NPTEL website. Please provide notes link

[@manishankarailiga347]

Sir according to Pauli exclusive principle no more than two electrons can occupy same energy state. Then how can there be that many number of states per unit energy. Could u some clear my doubt sir

[@pranjalrajchouhan6100]

There is concept of degenrated orbitals

[@harveenkaur8404]

How we know about how much electrons can move to conduction band from valence band .

[@harveenkaur8404]

Reply me as soon as possible if I am right Ans is It's depend on temp. Or energy

[@anjanaguruprasad1873]

The number of electrons move from the valence to the condcution band as we excite it, and excitation is posibble if we heat the material by increasing its temparature. Corect me if I am wrong.

[@pavankumarenugula5637]

Very well explaanation😍😍

[@aniketyewale7624]

Ya..bro..😁

[@ParminderKaur-zm4kw]

If holes are also electrons, then same electron in VB goes in CB then why is it said that effective mass(e.m)of electron in conduction band is different from e.m of hole in V. B???? Can any clear my doubt

[@sunirnaychatterjee8963]

static mass and effective mass both are different. see lecture 3 & 4

[@notnemeziz]

because electrons effective mass is affected by the electric field but not in case of holes

[@frisbee.976]

bcs effective mass of electron is due to potential well of atomic lattice which have different effect on that of hole's mass

[@semonmagdy3953]

how can i contact you ??

[@SchoolUse-o4m]

where the notes of this are available

[@Upgradezz]

Shoddy!

[@venkateswararaopattapu6651]

Hole=Proton Is it correct sir

[@sandeepsingh-uc9oo]

nope

[@uditbhattacharya4476]

@@xxxxxx-xn3nw What you're talking of are called "phonons" and holes are quasi particles, they're positively charged but they are not protons.

[@xxxxxx-xn3nw]

@@uditbhattacharya4476 Thank you for correcting me

[@PriyaYadav-zw4wy]

Please if someone have notes say yes

[@pavankumarenugula5637]

You can find in nptel portal (transcripts)

[@dipjyotiborah8585]

subtitles are disturbing

[@dhirajphuyal2970]

You can turn it off manually. I suggest you do so then it'll be much easier. Cheers!!