Band theory (semiconductors) explained

[@skyze747]

probably one of the most clear and well explained video I've seen through my physics degree

[@pkdudejunction2542]

right

[@anirudhrai1248]

Phenomenal explanation. This is how physics should be taught. Really awesome!

[@PhysicsHigh]

Thankyou for the compliment.

[@tonytor5346]

Beautiful! As a doctoral level scientist I compliment you on your very clear model. I wish when in School,and undergraduate someone would have taught me that way! It was mostly throwing concepts in very poorly planned lectures & the students were very frequently told " you'll eventually will figure it out"

[@craigfitzsimmons8412]

This is very useful for NSW HSC students in particular. The similation in the second half of the video is particularly good, and helps clarifiy some of the abstract concepts associated with band theory. Bravo!

[@justinfoto]

@5:55 cracks open a soda can really enjoyed this video. especially that marble analogy at the end. great video!

[@PhysicsHigh]

+Justin Huang haha - a slight microphone distortion, but yes, sounds like a soda can!

[@debojyotiroy39]

Justin Ha ha

[@VaughnCamacho]

cracking a cold one with the boys

[@Rajesh_Antil]

lmao u made my day!

[@michaelivanhaileka9694]

Justin Hunag hahahah you never let anything slide pass you

[@Baderbq]

The best explanation for the band theory I've ever seen. The metal sheet analogy is a very well thought way to explain the theory. Thank you

[@PhysicsHigh]

Thanks for the positive feedback.

[@brandynskulina7074]

In my last semester of college studying mechanical engineering and this still helped tremendously, thanks!

[@manriqueorellanarios6986]

Wow you really have a gift to teach physics, I have been struggling so much with this Band Theory and this video helped me so much!!! Muchas gracias!!

[@surrinderkumar1635]

I am from India and I like his video . You are right. Actually i study in 12th class ,ya there is some hard English word but I understood all.

[@Kasadilla1]

Wow this helps so much. Reading the textbook made it so much more confusing. Im more of a visual learner, so that helped a lot.

[@vaishnavisharma7767]

Sir I don,t really comment on videos based on some teaching topics but your work is too amazing that it's worth appreciation. Thank you.

[@PhysicsHigh]

Thankyou. That’s a nice compliment.

[@sharad7340]

Really I want this teacher in my university ☺☺☺☺😊😊

[@shammaheric8743]

Great explanation ! watching it the night before my chemistry final exam and its given me a much better understanding! Thank you !

[@qingyanggu4650]

What a great way to illustrate band theory. Thank you so much!

[@daysiannekessymendesisidor7311]

The best explication that I ever had about the topic! Congrats! Great👏🏼👏🏼

[@alyaaazmi7847]

Think you so much sir!! I’m taking my A-levels now and we’re currently doing Quantum Physics so this video helped me a lot!!! I understand Band Theory better now so thank you very very much!!

[@tanviprincess2175]

Me too! I'm currently doing this chapter. It's very interesting.

[@stanbillington814]

Maybe the best educational YT video I've seen. Also, a great voice you have.

[@johnnyroy9830]

*Such simple, intuitive and creative explanation ! Thank you very much...!!!*

[@BaldurKhr]

Most elegant explanation, using the marbles ! Thank you sir.

[@mohitbhangale2755]

this video cleared all the cocepts related to band theory..thanks sir

[@madmess6867]

One of the best explanation , I hope people will find this explanation

[@orangekangrufrmdnmrk]

Thank you very much you don’t realize how much you just helped me right now

[@jonathanstevens9770]

Great video ! definitely helps to understand the band theory better!

[@aryaabhishek9535]

Sir, awesome example..... Very new and innovative

[@samykamkar]

Thanks for the video! I'm a little confused at 2:40, the writing points to the band with a single electron and shows "valence band = outermost (highest) band filled with electrons (filled = all states occupied)", but in this case what is "state"? Are all states occupied in this band if there is only a single electron? I would assume "all states occupied" meant all electron holes occupied in that band with no electrons in any further outer bands but maybe I'm misunderstanding "state". Thanks!

[@brandynskulina7074]

Yes, all electron holes occupied, in this element there is only one electron in the outermost shell. In other elements there could be more electrons in that shell and in turn have more states possible to be occupied. Hope this helps!

[@Scarabola]

SOMEONE please answer this guy's question, it is driving me crazy

[@josephcoon5809]

The Valence Band is the shell that contains the outermost electron in an atom in the base energy state. The Conduction Band is the shell an excited electron can move UP into while still remaining associated to its atom. An electron that absorbs enough energy to be ejected from the atom leaves the atom in an ionic state. Once a valence electron moves into the conduction band, a voltage can replace an electron in the Conduction Band with an electron from a neighboring atom. This constant movement of electrons is an electrical current. If the Valence Band and Conduction Band overlap, a Valence Electron requires little voltage to move electrons from one atom to the next. Most diagrams show the Valence and Conduction Bands overlapping within the same atom in a metal, but a better understanding is that the Conduction Bands of neighboring atoms overlap. It’s more like a group of neighboring metallic atoms share the SAME Conduction Band which is what makes them good electrical conductors. Think of a section of sidewalk. If they are right next to each other, you can still see that they are sections, but for all intents and purposes, they all make ONE sidewalk. This allows you to walk (low energy) from one to the next. These are conductors. However, if you remove every other section, you know have to jump (higher energy) from one to the next. These are insulators. If you remove every other sidewalk section, but you install a curb along side the sidewalk, you can step on one sidewalk section with one foot, and on the curb with the other foot and the next sidewalk section with your first foot. This is a semiconductor (sidewalk sections) with a dopant (curb). Without a dopant, the semiconductor is an insulator. With the dopant, the semiconductor is a conductor.

[@skchemicals450]

Even my coaching centre do not explain so clearly. Thank you so much. 🙏

[@sebastianvbb]

great general explenation. I'm going over Bloch's theorem now and find this very useful to develop a more visual concept!

[@aryan_bhattarai]

I have been searching for this kinda explanation. Amazing job

[@indhujag5920]

Amazing explanation sir , thank you so much🙏🏻 . Need a teacher like for all subjects 😊🤩

[@fawadfaisal3650]

fabulous job brother.... u made it soo easy for anyone to understand.

[@PhysicsHigh]

Thanks, please share ;-)

[@STP31]

Thank you so much....such a great explanation.

[@noormuhsin4399]

This was a phenomenal and unrealistically good explanation Bravo sir!!

[@forbiddenfume3222]

Why sodium's outashell is valence and conduction band at the same time and chlorine has additionel shell which is labeled as conduction band? Because sodium's outashell electron has potentian energy (they don't need to go to next shell) and cholorine's electrons tigtly bounded to nucleus but can go up to next shell?

[@liamexter]

Great video! The marble analogy was a nice touch.

[@aspektn.5066]

Seen once. Shall be seen again. Great vid.

[@kazishahjalal6852]

This is the best video on band theory.

[@navyarosesunny8771]

Very helpful video 👍👍

[@craigrussell4105]

good job you could use the same metal sheet to simulate n and p type semi conductors

[@kyemadden8461]

+Craig Russell I agree, excellent idea

[@kasthuritragu7784]

helped me understand this band theory very clearly. Thank you!

[@lineakristensen1821]

I'm not normally a big fan of analogies bit this one actually helped. Thanks :-)

[@Cube2deth]

Sir, this was an amazing explanation thank you so much

[@shivanisalian4765]

The only video which made me understand this concept

[@ankitkishorekhalkho8455]

Thank you ,,, it helped me a lot......👍👍👍

[@mock805]

Fucking wow moment I just had. I am a junior in college and I was reluctant to click on the video because it said HS but this has helped me so much

[@loouuiisssss296]

Excellent explanation

[@naomibarretto6325]

You explained this so beautifully. Thank you so much.

[@sussyuchiha5780]

simply incredible, thank you!

[@45seconds33]

👍❤️❤️ indian utuber's should learn from ur videos, how to teach❤️❤️❤️

[@klmoves]

great explanation. grateful for this video!

[@Mohitchoudhary_2381]

Supab explnation sir I clear my all doubt

[@TheAhmedMAhmed]

great tutorial, clear and well-explained!

[@vishank7]

Great work! The analogy is really helpful. 😄

[@imhotepchannel6846]

I wish I was in your class, but thanks God for KZbin!

[@AbarajithanGnaneswaran]

Nice... Thanks a lot

[@senbonsakura2353]

Awesome explanation. Liked your video and effort!

[@ashiyamohra3403]

thank you so much sir.........it helped a lot!! excellent explanation

[@yahdi]

Nicely explained. Thanks. this video help us in our course of solar cells.

[@talalbintariq8339]

Thank you sir you cleared my confusion about valence and conduction band

[@sunaykasam6224]

Great explanation. Thumbs up

[@khalilhajbi9233]

The marble analogy was brilliant!

[@tomus0n]

You explain it better than my lecturer did

[@VyvienneEaux]

High school physics?!?! Wow! I only learned about this in my senior undergrad year in quantum chem!

[@aygunhuseynzada3015]

Perfect explanation!

[@CheekiAnimations]

I might be moving myself into 'band 6' after watching this video! 😉

[@hubertlawrence4903]

Man thank you for this explanation 🙏

[@dpcon1994]

Really great analogy... and great video.

[@talibalihashmi1102]

Best explanation of EBT

[@yasser5846]

Wow great explanation Thank you from Saudi Arabia 🇸🇦

[@naskhd765]

OMG u saved my life! thanks so so much

[@UjjwalRane]

Thank you!

[@ErlWable]

Simply superb

[@Mirage1deluded]

Nice explanation sir. I clearly understood thank u so much

[@qzorn4440]

very well explained... interesting and gee the electron does move, this is nothing to fly a kite about and get all keyed-up over...:/ thanks a lot..:)

[@AkshayKumar-ui5fh]

Good explanation with a demo.😀😀😀

[@rahulsingh-fo2ds]

Nice work..👍👍

[@arashrazi662]

GJ, thanks for your great explanation.

[@clarisse88]

Great video! super clear and useful!

[@PhysicsHigh]

Thanks.

[@tanviprincess2175]

Thank you sir! It was very helpful!

[@PhysicsHigh]

Glad it helped ;-)

[@chialingchiang2336]

Great explanation and effort, thank you so much sir

[@alexeynaturyev641]

amazing, very well explained!!!

[@stevejosephh]

Awesome Explanation! You're the best!

[@PhysicsHigh]

thanks!

[@gudkh9023]

Thanks very much for excellent explanation❤

[@aayushchoudhary1539]

you explained it very nicely wish you were my physics teacher

[@PhysicsHigh]

Thankyou 😀

[@gerardogutierrez4911]

How is this HS physics? Im taking my undergaduate upper division experimental lab course and Im "learning" about this stuff. Nonetheless, amazing video. Was confused what what bands have to do with conductors/insulators, but I see now. Conductors have overlapping valance and conduction bands, so free electrons in the valance shell can move. "Inchulators" have a huge gap energy so those electrons will never conduct since theyre tightly bound to the atom. No electron motion.

[@hodongjunior2826]

you are a wonderful teacher!

[@soot5676]

beautifully explained thank u.

[@parimeshsridhar2581]

Thank You Sir.

[@PhysicsHigh]

You’re welcome

[@physicsdiva1871]

Nice explanation

[@abhishekkulkarni2955]

He is a legend tq sir😘😘

[@kainatjahangir6650]

I really liked this video.But i am having difficulty in understanding transistors npn and pnp .........so its a kind request to please a video on transistors .

[@mbaisa100]

Really good analogy.

[@Arnob127]

wow very well explained!

[@aanderson1918]

Great video keep it up!

[@divyamaglin8229]

great explanation....

[@1230986666]

Excellent video, definitely the best of all the ones I watched so far. However, I don't understand why you say that the conduction band is the NEXT band, but then show it's the same band as the valence band. In the next example it's different.

[@joodmu2002]

Now it’s very clear, thanks

[@PhysicsHigh]

Glad it helped.

[@Sam-mh9mw]

This is the clearest explanation I've ever seen, thank you!

[@debojyotiroy39]

You are amazing! Thnx a lot sir!!!!!!

[@brucezhou4655]

Thank you sooo much! That's really helpful

[@ibrammikhail8079]

wow amazing vedio!!

[@Ahmadabdal_]

thankyou sir but can you please tell me does valance band always have to be filled or not because in the sodium energy level diagram the conduction and valance band were the same.