is lecture me jo maza hai wo mai desh ke har ek vyakti ko dena chahta hu
@randomyt5358 Жыл бұрын
To pappu banja😂
@omartusson Жыл бұрын
Thank you very much. I'm taking a course in semiconductor physics in which the professor just goes over slides without bothering to explain anything. I couldn't understand anything from him and got confused on many occasions. These videos helped me a lot.
@vinodshet274 жыл бұрын
Thank you professor Very informative and no need to go through textbooks I believe. Very helpful for me.
@nitishgupta1693 жыл бұрын
12:49..... Sir what do we mean by n=0 Is it mean that no electrons is left in SC. WHERE DO intrinsic electrons gone ? If n=0 then equation , np = ( intrinsic carriers)^ 2 not valid??
@anchalkumarchaubey30272 жыл бұрын
@@nitishgupta169 but it is for that only when n-type and p-type both co-exist together and sir assume that Nd =0 , it means no extra electron get added in SC material
@anchalkumarchaubey30272 жыл бұрын
@@nitishgupta169 Intrinsic electron always present in SC, this cannot be changed in any circumstance but the condition for n=0 is for when n-type and p-type happen together, it assume .In reality it have some value which is very small in comparison to hole, that's why sir taken n=0. np=ni^2 it always hold in equilibrium conditions, here also hold.
@hemantj6755 жыл бұрын
Super simple and super easy. Thanks professor
@madagalarajasekhsar37394 жыл бұрын
excellent teaching.anyone can understand
@divyasingh65034 жыл бұрын
Happy teacher's day sir.... Due to u ...Now i can understand semiconductors as well.
@nitishgupta1693 жыл бұрын
12:49..... Sir what do we mean by n=0 Is it mean that no electrons is left in SC. WHERE DO intrinsic electrons gone ? If n=0 then equation , np = ( intrinsic carriers)^ 2 not valid??
@allamnaveen76223 жыл бұрын
@@nitishgupta169 At 12:49 n ~ 0 that means n is nearly equal to zero or very less in numbers, the equation np = ni^2 is still valid if u use exact numbers instead of approximate numbers
@nitishgupta1693 жыл бұрын
@@allamnaveen7622 thank u for clarifying it . I was thinking that no of electrons is exactly zero.
@user-sn2bf5ec2m2 жыл бұрын
@@nitishgupta169 the concentration is relatively too small so you can assume there is no free electrons inside approximately
@nitishgupta1692 жыл бұрын
@@user-sn2bf5ec2m thanks🙂
@Syz684 жыл бұрын
Vice nice teaching sir
@tekkenworld82622 жыл бұрын
Wish that you were my semiconductor professor 🥺🥺
@louerleseigneur45322 жыл бұрын
Awesome Thank you very much sir
@deepstudywithamitkumar41244 жыл бұрын
Brilliant maza a gya
@swtghs Жыл бұрын
❤❤❤❤maja aagya... iisc is iisc❤❤
@adhirajmankotia95982 жыл бұрын
Good lecture
@GoodmanMalaya92917 ай бұрын
❤❤❤🎉
@freeandreliablejeeprep820 Жыл бұрын
thank you very much sir
@sudhirjaiswal68643 жыл бұрын
this pn=ni2 is almost like water equilibrium constant
@HustlerMohit4 жыл бұрын
Sir you said, In intrinsic region too much electron leads to metallic behaviour. But Sir in semiconductor conductivity decrease as temperature increases?
@amitkumar-sh2lk4 жыл бұрын
i think he did not said that it will behave like metal but he said that at high temperature intrinsic carrier concentraion increase so intrinsic current increase .
@sudhirjaiswal68643 жыл бұрын
you are talking about conductor ,semiconductor is opposite nature
@nitishgupta1693 жыл бұрын
12:49..... Sir what do we mean by n=0 Is it mean that no electrons is left in SC. WHERE DO intrinsic electrons gone ? If n=0 then equation , np = ( intrinsic carriers)^ 2 not valid??
@yawarhayat56283 жыл бұрын
@Nitish Gupta Actually n won't be ~ 0 rather it will be relatively very negligible in comparison to p. We obtain p first ( here 10^17 cm^-3 ), then we use law of mass action (np = ni^2) for computing n. In this example, n would be of the order of 10^3 cm^-3 which is very negligible in comparison to p.
@nitishgupta1693 жыл бұрын
@@yawarhayat5628 thank u , there always comes a hope form unexpected side 🙏
@Neeraj-is1jt6 ай бұрын
I am tired of asking the same question At 16:09 how can electron be present in the forbidden energy gap(Donor energy level)?
@snehasuren5 ай бұрын
Electron does not exist in the gap it is for representative purposes only. Ed here only denotes the ionisation energy and hence placed very close to the conduction band. Any slight increase in temperature is enough to gather enough thermal energy to pull the electron from the donor atom and push it to the conduction band
@Neeraj-is1jt5 ай бұрын
@@snehasuren plz tell me the reference book where u get this answer ,I will be thankful to you