The PN junction | Class 12 (India) | Physics | Khan Academy

In this video, let's explore the famous PN junction. We will see what happens when we have a single crystal with a P-type semiconductor on one side and an N-type on the other.

Class 12 Semiconductors: We cannot imagine our life without computers today. But what makes a computer tick? What's making this technology grow at such an exponential rate? It's all due to semiconductors. As unbelievable as that might sound, altering the properties of semiconductors allows us to build these computers. In this topic, we will explore the world of semiconductors. It's a journey from what semiconductors are all the way to creating building blocks of these computers.

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Created by Mahesh Shenoy

[naomiemredha]

OH MY GOODNESS, THIS WAS INSANELY GOOD. BEST PN JUNCTION VIDEO ON THE INTERNET

[arthureaton]

Goodness! I've been an electronic engineer for more years than I care to admit. On occasion, I still like to review the fundamentals to keep my knowledge fresh, so I've heard the P-N junction story many many times. But I have to say, this was the best explanation I've ever come across, and even after all these years practising engineering, this little video has greatly improved my understanding of this very fundamental concept.

[jessiondiwangan]

I spent my whole year looking for this kind of teaching, finally i found ya

[Parapresdokian]

2:09 I always love humour mixed with spontaneity. Mahesh should start his own patreon. I sooo badly don't want this man to quit his job for monetory reasons.

[s.]

Guys I bet uh, u won't get a better video than this in the whole of the utube!!
I wasted a lot of time,
searching for a video where I could understand p n junction clearly...
And then I found these videos where I understood it finally!!!
Tqsm🙏🏻🙏🏻👏🏻👌🏻🥳🥳

[dhurbarajpuree]

3 times I rewatched.... It's a gem video.

[ਝਲਕ]

I m in love wd this topic now, no crammed concept, just pure physics and physics . This is insane 😍

[esphilee]

I have watched no less than 6 videos. This video is one that makes sense. The rest are like my school teachers, they just brush things under the carpet and call it a day. Well done.

[Angel-udjm]

Awesome way of teaching.its the best video I have seen in YouTube that explains about pn I really appreciate you👏👏👏

[shaikrafiq]

Sir u are incredibly smart .... am feeling too happy and a sought of courage developed in me that i could achieve any thing by khan academy🙏🙏👌

[Kyle_da_athlete]

Literally the only video on this topic that got me to understand this can't thank you enough

[nareshsharma]

All your videos explained with such clarity, its the best way i gained knowledge... Loved it! Please keep making them ❤️

[carolinerozario]

You're the best sir!!! Just loved the explanation! You deserve more n more subscribers... on the other hand, unacademy n etc just advertise their platforms! But Khan Academy is so service oriented! Loved it! Thanks so much!!

[freeverse]

Best thing Khan Academy (especially Khan academy india) did to me is that they developed intrest of physics and now I have such a fond to listen these lectures it gives my mind a massaging effect

[riturajborah]

Excellent explanation! Thanks a lot for such free amazing content!
Regarding the PN junction, we could also look at it from the perspective of neutrality. Overall, the p-side and the n-side, both are neutral and they want to remain neutral. At the PN junction, naturally, the nearby electrons and holes will recombine, but only to an extent where the tendency to remain neutral will pull the charges from going further. For example, on the p side, when some holes are neutralized by the electrons from the n side, there will already be some net extra -ve charges on the p side. These charges will resist further charge migration towards the p side. The same for the n- side.

[bhaskarkothala]

No Marvel no Dc. These videos introduces another universe.

[kokilamani]

Sir, I searched this type of teaching from many channels.... and finally u gave....osm teaching lucky to get this video....tq so much sir...u did really an immense work....keep

[brothercavil]

At 7:17, why isn't the minority carrier electron from the P side not repelled by the negatively-charged Boron. I get that it's attracted to the positively charged Phosphorus, but it has to get past the Boron first...

[whomptilizes]

Absolutely amazing. You're the best!

[wassupdee]

Love his explanation and kindness to answer some of the key questions posted by others. They are very helpful. I appreciate it so much!