PN Junction Diode (No Applied Bias) 

Well who cares about paying attention to online classes when this guy here teaches soo well and in short videos.... I definitely love this...

From ALGERIA thinks sir, your video is the best in youtube .

In the first semester I followed circuit analysis videos in this channel after missing the lectures in school and thanks to this channel I scored an A grade And this second semester I hope I’ll have score in analog electronics as well as that of circuit analysis Million thanks NESO ACADEMY 🙏

Hello, I'm here to tell you your videos really helped, I did my final exam well I almost thought I would either fail or pass on a border mark but scored decently. THANK YOUUUU

Sir , seriously I am saying that...it is the best video on pn junction in RU-vid...I have many questions on it so see almost other's channel video....but it's best because it give me every question answer...but sir if you explain more on drift current as like diffusion current..it will superb...thnx again

Discussing electron and hole movement is like describing a picture and it's mirror image at the same time. A complete understanding of P-N junction theory can be done with electron flow alone. Dr. Shockley invented the idea of "holes" because it greatly simplified his math. But it is unnecessarily confusing and .adds nothing but extra work to the physical understanding/

Absolutely beautiful explanation of pn junction diode. I have studied it earlier many times, always had some doubts, but you cleared all of them in just 18 mins. Thank you !

The only channel that doesnt say 'LIKE SHARE AND SUBSCRIBE'☺

welcome all the people who didn't pay attention in class xD

00:06 Introduction to semiconductor diodes and formation of PN Junction diode 02:39 Biasing of PN Junction Diode 04:52 Combining p-type and n-type semiconductors creates a junction with majority charge carriers as holes and electrons. 06:51 Concentration gradient drives movement of charge carriers 09:02 Depletion region is formed in PN Junction diode due to uncovered immobile ions. 11:28 Understanding majority and minority charge carriers in a PN junction diode 14:15 Depletion region width is fixed due to barrier potential 16:08 Drift current is due to minority charge carriers.

Sir you are awesome. We are left without any doubts after watching your videos. Even if a doubt arises, the next moment you talk about that doubt. It's like you can read the mind of students.

Drift current is not only because of minority charge carriers.Drift current is electric current due to the motion of charge carriers under the influence of an external electric field while diffusion current is electric current due to the diffusion of carriers leading to a change in carrier concentration

you are exceptionally brilliant and knowledgeable sir!!!

Sir In video You told that the negative charge will repel the eletrons and don't let them to come in p side but the +ve ion layer on P side should also attract the eletrons ( as there is concentration difference ) and No longer remains Uncovered

Thank you so much for explaining so deeply ❤️

Hi Neso Academy, Thanks for such interesting and informative video lectures. I have a question: "Where do we the minority charge carriers? And do we always get 1 minority charge carrier along with 1 majority carrier from a particular atom?" Thank you.

PInky nagar my friend told me about this .And what I have seen till this comment is very nice .Thanku

Awesome lecture! Everything is crystal clear now

Thanku sir ur leactures are nice u are one of the my best guide in subject one life saver ur lectures

in fact u did the best explanation continue helping us . God bless u

Doubt how minority charge carrier is responsible for drift current as e- is moving from N side to N side only which is majority charge carrier

Thankyou so much sugeeth sir and neso academy

Thank you for making these videos : ) Could you explain what it means for a hole and an electron to recombine?

best way to learn a basic ti high concept thanks sir .......

Sir u solved my class 12 problem which is even not solved by IIT professor in btech 1st year. Thank u very much sir.

Sir according to theory discussed....the drift current flows after the diffusion stops ...so there will be some time difference between drift and diffusion current so why we are taking them equal??

NITian and IITian Attendance here❤

Hole is a vacant space created by the valence electron (when it moves from its own place) ,but how a hole is moving from one place to another

At 16:20 In depletion region why there are electron and holes present As it is depletion layer there should be no charge carriers So why they present

Big thanks from Hungary!

Thanks... You r always there to save the day 🔥

Best explanation 👍

My saviour for tomorrow's sem final _/\_

Very well explained sir.. Many thanks !!!

Thank you very much....It is very helpfull.Bless the lecturer in the vdo and the one for uploading it Thank you once again.

Will you make a video about Fabrication methods of PN junction sir??... Please, I am really understanding the topic to the fullest from your lectures. So, was asking this favour sir!!!! :(

After sleeping in class.. I'm here

Thank You So Much

Excellently delivered

Nice but 1.what is steady state? 2.why diffusion current=drift current at steady state?

I reading this for my CAT today ❤

Thanku sir your all videos are best👌👌👌

Thank u sir i got full clarity in this subject. But kindly let me know whether u have lectures on network theory

Sir can you pls make a video on explanation on energy bands of n and p type semiconductors !!

Thank you so much ,Excellent explanation!!!!!

i don't understand one thing in this video that is u already told that depletion layer does not contain any flow of charge but minority carriers are giving drift current

Top study sir .....

IES INterview question why we can't able to measure the built-in potential of the p-n junction by using a voltmeter.?

u are amazing at teaching. seriously amazing......

Thank you so much!

Nice sir.

let me give it a lot of attention maybe i may achieve more from these videos

Best theoretical explanation 👍👍👍👌

YOUR VOICE IS VERY PERSUASIVE

Good work neso academy good explanation no bullshit

thankyou so much sir .

Please why are the donor ions in the n type semiconductor positive? where as the impurity atom used is phosphorus and its negatively charged

You are the best

Excellent job , Thanks a lot

Thanks a million ✌️

Excellent sir🔥

Please what’s the breakdown voltage of a pn junction diode and how it’s calculated ?

thank u very much to giving me a better understanding

In depletion region the electron is recombined with hole so there ion is converted into atom. But how there is still ions are present?

thank you very much neso academy... please keep making videos

super and nice explanation

you are amazing Sir.

good explanation.. tq sir😊

why donor atoms aren't negative ?please anyone explain

so helpful!

Can You explain how the immobile electrons surface out so that depletion region formed, Similarly how the drift current obtained if the depletion region consists of only immobile electrons....?

Thankyou Sir

Thank you

Hey can you draw out the energy diagrams for these diodes please?

Biasing is application of voltage accross 2 terminal. But is it biasing with respect to DC voltage or AC voltage? Thank you for the video by the way.

thank u sir making these vedios,sir I have a question that is- when barrier potential formed then diffusion current will be zero then how in stade state condition diffusion current =drift current also tell how we get drift current after formation of barrier potential.plz clear my doubts

Dear Neso academy, i have a doubt , will you clear it for me? Diffusion layer: Absence of free carriers but immobile Donor and acceptor atoms will be there. The free carriers hole and electron will recombine. While recombination, what happens ? what happens when hole and electron recombines? Do they cancel out ? if so where will their masses go? ( You said mass of hole > mass electron in previous lecture). Recombination result please explain.

NICE

Sir !! In the lecture you told that drift current is equal to diffusion current , can you please elaborate it ? I am not able to understand that thing .

Thanks

How can the hole move through the depletion layer. I think only the electrons will move because they are mobile.

what is meant by uncovered charges

bro u own physics

thank you so much

Can it is also for b tech first year electronics

Why is drift current equal to diffusion current. I can't figure it out.

How do electrons and holes combine? If an electron goes to a hole, it creates a hole in its previous position. How can there be no electrons or holes in the depletion region?

Useful !!!!!

Do you have planned to make more advanced content, such as Embedded system design or DMA, Interrupts, Memory Shadowing, Indirect Addressing and work maybe design with CPUs?

May I know from which book you are referring, so that I can go through it once

Watched it at 2x speed. Understood better!

thank. you. so. much sir

Sir can you please start the series on 8085 microprocessor. Please Sir.

Thanks alot bro! but kindly explain the point that Whole is equivalent to positive charge ? thts y it repels the whole and similarly the negative ions repel electrons when depletion region is formed.If it is so than why there is diffusion current on start ?

At the depletion layer possitive layer repel the holes but it attracts electrons is possible,so is it depletion region increases?

tnx

Sir P-N junction diode picture can't understand , p type negative charge and n type positive charge why?

Plz use white colour while writing. As other colors are not visible to me.

I think p type are positevely charged carriers u mentioned n type y sir

🙏