Now in last year of BSc. Studying from you from class 11 sir. My basics are pretty better than my batch mates. I owe all this to you. You are God of Physics and a very kind soul. May you live long
The barrier potential for silicon with typical doping concentration is 0.7V. You could also change the barrier potential in simple ways. One would be to alter the doping concentration. Increasing the N side doping or P side doping or both would increase the barrier potential. Decreasing the doping concentrations would decrease the barrier potential. Alternatively for same concentration of doping you can have different barrier potential if you change the semiconductor material itself. Ex Si to Ge. Germanium has potential barrier 0.3. Much significantly lesser than silicon. Higher number of intrinsic carrier concentration decreases the barrier potential.
muhammad asad this happens only for a faction of second then if we put off battery then they will act as an insulator as there will be no free charges but if we put battery there will be collisions and charge carriers will be produced and it will act as a conductor till there is battery pot diff more than pot barrier... Hope This Helps..
When same voltage occur ,potential Barrier get zero value means no opposition force is applied to cross the junction ,now electron get easily move towards hole side
Depletion layer starts to shrink because both potentials are equal. The condition for depletion layer to destroy or shrink and the for the electrons to flow, the applied voltage should be GREATER THAN OR EQUAL TO the barrier potential
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Mr Shree wow
Me too
R.I.P sir. Your good deeds and contribution definitely wont go to waste!
Now in last year of BSc. Studying from you from class 11 sir. My basics are pretty better than my batch mates.
I owe all this to you. You are God of Physics and a very kind soul. May you live long
He is dead. (RIP)
Clears each and every point...hats. off to u...lots of respect🙏
I have been trying to understand semiconductor since my fresher year , thanks to you sir ..u finally resolved my doubt .
Sir i am repenting why i wasted money on tutions 😔
Sir you are awesome 😍
Sir g aap bohat aala parhate hen mujhe aj tak kisi ki itni axi samjh nhi ayi jitni ap ki ati he sir Allah ap ko khush rakhe or sehat de
best teacher i have come across youtube
You are the last hope of physics.
Amazing video sir !!!
You are marvellous, sir
Respect you 😀🙆
Sorry to say but he is no more now🥺
@@mysteriousentity6109 😢😢
best video on the world I promote this
best teacher
Was helpful thx sir..respect🙏🙌💕💕
Sir why we take this only in decimal no than whole number
The barrier potential for silicon with typical doping concentration is 0.7V.
You could also change the barrier potential in simple ways. One would be to alter the doping concentration. Increasing the N side doping or P side doping or both would increase the barrier potential.
Decreasing the doping concentrations would decrease the barrier potential.
Alternatively for same concentration of doping you can have different barrier potential if you change the semiconductor material itself. Ex Si to Ge.
Germanium has potential barrier 0.3. Much significantly lesser than silicon.
Higher number of intrinsic carrier concentration decreases the barrier potential.
Sir how potential difference can have direction?
thanks a lot!!!
Respected sir!! If we switch off the battery after barrier potential then will the diode keep on conducting without battery voltage support???
muhammad asad we need to overcome the barrier to conduct electricity... If you disconnect the battery how will we overcome the barrier....?
muhammad asad this happens only for a faction of second then if we put off battery then they will act as an insulator as there will be no free charges but if we put battery there will be collisions and charge carriers will be produced and it will act as a conductor till there is battery pot diff more than pot barrier...
Hope This Helps..
Sir I depend on you
It is given as 0.3eV for Ge in ncert sir 8:34
Love you my dear sir
If applied voltage more than induced voltage then what will happened sir
Sir, when we apply voltage is maximum to barrier potential then what become ?
Will they not recombine when depletion layer has gone.. If no why.. If yes how come the Current came
How can electrons jump at same potential??? 5:34
When same voltage occur ,potential Barrier get zero value means no opposition force is applied to cross the junction ,now electron get easily move towards hole side
Depletion layer starts to shrink because both potentials are equal. The condition for depletion layer to destroy or shrink and the for the electrons to flow, the applied voltage should be GREATER THAN OR EQUAL TO the barrier potential
Love u sir
Sir this is always .7 and .2 or either different ?
it could be anything
For silicon diode you can take 0.7V as standard.... And for Ge diode 0.3V
Chanchal Singh no
.7 and.3
Why flow of current is opposite to direction of flow of flow of electron
Refer current electricity
As u say Nh=Ne
Prove it
It was already proven practically , hence its a known fact
Wow
Make it more lucid
RIP
Totally Wrong concept..please follows Neaman..or follow nptel lectures by S karmalkar..
plz speak in hindi also