Electronic Devices: MOS Capacitor (04) - Depletion Mode

[@tushargarg1106]

These lectures are too good.

[@EigenA]

Definitely earned a sub. Thanks for the content.

[@RekhaSingh-uh5oc]

Psi S is same as Built in potential Vbi??

[@georgevendras5450]

Hi there. Can someone tell me how the formula "Q' = q*N_A*x_d/ε_si" is extracted and what exactly represents (I think it represents something like Q/A = Voltage*ε_si/x, that is, capacitance formula combinatrix, but not sure) ? Thank you!

[@oogway5472]

Sir why is Qs constant in semiconductor for distance xd and not like the one you taught in accumulation mode?

[@mdkalimullah4207]

Outstanding

[@mrigankomandal710]

The phenomenon of charge inducing should be same for both depletion and accumulation(except for one pull the e and one pushes). The doubt sir is, you showed a gradual decrease in charge distribution and E.field for accumulation mode, but here you are showing sharp edges for charge distribution , and e field is linear here , in accumulation mode it was not. Can you please tell why?

[@captainstreamer3261]

the words itself your answer " Depletion " what you mean with " Depletion " ?? And " Accumulation " ??

[@TelTrak]

Very good explanation. A minor comment... the formula for E=∫ρ/e dx doesn't support the step change in E field at the oxide semiconductor interface. I think the epsilon (permittivity) has to come outside the integral - then it would fit with the step change in E. I know the step change in E field at that interface is correct as you show - just that formula as shown unsettled me as it doesn't fit here due to the change in permittivity at the interface.

[@electricalnguyen]

Hello, could you please explain why epsi_ox E_ox (D1)= epsi_si E_si (D2) at the Si-SiO2 interface? Because the boundary condition said that D1 - D2 = surface charge density (on the right side, we have negative ion right?)

[@captainstreamer3261]

Where is the charges located in surface? , inside Surface Of SiO2 Or Outside Surface Of SiO2 , what would you think ?

[@electricalnguyen]

​@@captainstreamer3261 what do you mean "in" the surface?! btw, thanks. As I understand now, surface charge means that the charge is right "at" the SiO2 surface. It is from the point of SiO2 view. --> Zero charge How about from the point of Si view?

[@fathysayed1670]

thank you legend

[@galelbaz2149]

thank you so much

[@mdkalimullah4207]

Hello sir please upload video on communication systems autocorrelation function

[@youcefai619]

i think u mixed between accumulation and depletion diagrams i searched about it i foubd that u reverse them , confirm them plz sir

[@techgurukula]

It's not mixed up. This is correct. Let me know where you found reverse.

[@mohitrongare4033]

They are correct Joseph Ganja marke dekhe Kay bhai videos🌬🌬🌬

[@captainstreamer3261]

na na bhai wo N type Substrate Ka video Dekh ke aya , abhi kya hain ki .. sab lok toh likhte nehi na ki konse substrate ka video dikha rahe , toh confuse ho gya bechara...

[@xyzme1217]

Thank you so much