Band Gap and Semiconductor Current Carriers | Intermediate Electronics
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- Опубликовано: 18 июн 2024
- What makes a semiconductor a semiconductor? For that matter, what makes an insulator an insulator and a conductor a conductor? It all comes down to how much energy it takes to pull an electron away from its nucleus! We delve into this and also talk about how not only electrons move but also the lack of electrons, or holes, move. It's kinda weird but pretty cool. Check it out!
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00:14 Parts of an Atom
00:37 Valence Band
01:00 Band Gap
01:19 Three Types of Materials used in Electronics and their Band Gaps
02:00 Current Carriers in a Semiconductor
03:34 Summary
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Hi everyone - if you want to read about this at your own pace with embedded animations, check out the tutorial on our site: www.circuitbread.com/tutorials/band-gap-and-semiconductor-current-carriers
Have a great one!
I cannot describe how happy i am to understand this just before my exam. Thank you so much.😄
Awesome! Good luck on your exam!
@@CircuitBread thank you.
same i'm so confused before watching that video but when i watched it now my concept is fully clear
Same here
Same here
Three teachers around here couldn't even explain a singular minute of this as good as how you did, God bless you.
I love how simplistic and up to the point you are
thank you so much!!
Bravo! Finally found someone who can explain it in simple terms! You are the best!
Thank you, the most simple and complete in same time explanintion i've ever seen
I finally understood what is the hole current!!! Thank you so much! I've always asked to my professor why the holes can flow and I never had a satisfied answer. It turns out to be electron current but at valence shell!
You did such an awesome job at describing this! I appreciate these videos and hope you do more in the future! :D
Thanks, Jennifer!
Thanks for the video. Simple, plain and short.
Thank you for such a clear explanation! Straight to the point
Thanks! Semiconductors have never been my strong point so we were trying to make something straightforward enough that I could understand. 😄
Wow! The way you explained it so simply and visually was incredible!
Thanks a lot for making this, you really cleared up a lot of confusion I had.
Awesome, glad to hear it helped!
Amazing video! Cleared the hole concept
this is best, simple and easy way of teaching Band gap and semiconductor. I like your videos👍
Thank you for making this video!
These videos are fantastic! Why haven't I seen you before now?! Thank you
That actually helped, i can't how much i googled it this is the first video that actually helped
I had a hard time understanding this concept. This helped a lot. Thanks
Very well explained. Thank you!
Thank you so much for your amazing explanation!!!
YOU ARE HEAVEN SENT.. THANKYOU SOO MUCH
Concise and clear !!!! THANK YOU!
Very helpful explanation. Thanks!
Thank u sir. This video cleared my doubts on hole current
thanks for this simple explaning
This is such an awesome video!
I am wo happy I watched this.
Thanks so so much.
Great work, helped lot. thank you
That was very helpful. Thank you
Beautiful video!
very clear presentation, I like it.
you are a great teacher ...........no words to say...thankyou...................so..... much..............dint understand when watched many videos..but only this made me know.........thankyou.......😁😁😁🤩🤩🤩
Clearly explained 🤩🤩... Those animation videos removed all my confusions and doubts that have from past many years...
Glad it helped out and made things more intuitive!
Great job mate! Thanks a lot!
Excellent explanation!
very nice explanation thank you circuit board
im gratful with your explaination :)
Awesome explaination ❣️
THANK YOU FOR VISUALIZATION
Thank you for clarifying my doubts.........
Great explanation!
Thank you very much for the clear and precise explanation. 😊
You're welcome!
I came here to understand band gap and got more than I hoped for. Tthe effort put purely into explaining the concept as apprehensible as possible is heart warming. I thought I'd subscribed to your channel already but was glad I wasn't so I could do it now. Awesome job, sir!
BTW... in my head, I picture charge carrier holes as bubbles in water (since they're just 'empty space' in the 'actual substance'). Would you say this is a reasonable metaphor? I'm just curious why I can't recall seeing this anywhere else while some people seem to hold on to all sorts of water analogies even when the atom model might be easier to grasp.
Thanks for the kind comments! And yes, I think that would be a great metaphor!
Still creating a bang !After 5 years tooo..... Thanks a lot.....
Awesome video, it was so helpful 😀 💯💯💯💯💯💯
Amazingly clear explanation. Thank you
Thanks Mevyn!
Amazing explaination🤗🤗🤗🙌👍
i watched many videos trying to understand bands, gaps, and how that relates to electrons, but all the videos i have watched up till now miss the importance of describing WHERE the conduction band is relative to the valence band on an atom. If they leave out one little piece of information it sends you crazy trying to understand the rest. Thank you so much for your video, now I can continue.
Thanks Aussie! I have definitely been there before and am glad we were able to help eliminate that confusion/frustration for you!
Thank you for great explanation, it helped me a lot! :)
Fantastic - I'm glad it helped!
i am soooooo glad to find you. thanks, you saved my life
Hi Irem - glad we could help!
I'm currently looking into Thermal generators and conductors, this video is very awsome your sound quality is ver nice and you speak very freely i love this video pls make more you should have an way bigger audience with this Video Quality and information
Thank you!
It's really very helpful
Basically my whole day of studying summarized into 4 minutes.
Nicely Explained sir
this was so clear! thank you
Awesome, glad to hear it helped!
very clear
Subscribed and liked bro good vid... I already know a bit about band Gap and transparency, just trying to refresh. Came across a vid about it from an English bloke and he was explaining with plastic balls from a kids play place... I found your vid right after.. you ever notice that Brits are smarter and more informed than the average person here, but I think that our best of the best outshine over here
Glad to be of service! I think I watch so much BBC television that I don't even notice accents now unless I'm consciously thinking about it. As for comparing the US to Great Britain, I'm not gutsy enough to jump into that conversation! 😂
Great explanation, thank you!
Thanks for the feedback, we really appreciate it! We put a lot of stuff out there and we hope it's useful for people!
Amazing very nice explanation have finally understood
Awesome!
thanks very much.
such a good teacher and explanation mate.
Thanks Iñigo! I appreciate the feedback!
clear and direct
Thanks!
Nice explained sir🙏🙏🙏 I understood it very clearly and thanks for clearing my doubt. Sir
Love from India ❤️
You're welcome!!
you did great
thank u soooo much so helpful
You're welcome, I'm glad it helped!
Awesome video, thank you
Thanks, glad it helped!
Thanks buddy
Great for test review! Also, a Fermi level video would come in handy
Thanks Luis! Y'know, we talked about doing a Fermi level video but didn't think there was quite enough content to create a video out of it. So Susie put together a quick overview on our website, let me know what you think: www.circuitbread.com/ee-faq/whats-fermi-level-and-why-is-it-important-in-a-semiconductor
Perfection.
Por favor, sigue haciendo vídeos. Son muy útiles.
¡Gracias! Estamos planeando hacer más videos sobre diodos y transistores pronto, y esperamos que ayuden.
wonderful
bravo !!!!
GREAT !!!!!!!!!!!!!!!!!!!!!!!!!!!
Thank you ❤️ 2days before exam searching for a animated video to understand semiconductor 😂♥️♥️
Great!
Thank you so much
Now , I can dye happy 😊
Great explanation of the band gap. Thank you! Do you have knowledge in the perovskite semiconductor field?
Hi Melody! Sorry, I only recognize the word perovskite from doing some reading about LEDs and solar panels - nothing in depth at all.
What a nice voice! Great explanation, too.
Thank you! This is going to go straight to Josh's head, though... 😉
Could you explain how to define CBM and VBM when a trap state or a middle state is generated in the band gap?
Amazing work!
Thanks Teresa!
Well said
Hey! does your syllabus matches with ours CBSE?
By the way in which standard do you study?
Is there a practical experience with passing an electric current through a silicon chip doped with boron? P_ type
Great video. But, what do you mean by giving electrons energy? How do you define energy?
Thanks man lots of love from India
Thanks!
Holes(vacant space) in valence band
Near by electron in valence band moves to make current in valence band
Greaaaaaaaaaaaaat effort. keep it up
Thanks!
Nice
Sir explain about direct and indirect Band gap in semiconductor
Thank you for your videos. The presentation is really nice and it makes me curious about the other videos ! :D I still have a question if you have time. Why large band gap semiconductors like SiC are better than Si ? I mean if a narrow band gap needs less energy to make the electrons goes into the conduction band, why SiC would be better than Si as SiC has a larger band gap ?
That's a great question and one that I'd rather refer you to a good article rather than try and explain it in a RUclips comment. I recommend going to: www.wolfspeed.com/knowledge-center/article/importance-of-silicon-carbide-wide-bandgap I don't know who this company is but they have a good explanation on this topic. I hope it helps!
@@CircuitBread Thank you for your answer and I hope that your channel will work as good as you want :)
Yeah it is helpfull🎉😊
Hi, there, your video is awesome, thanks so much for posting this, could I download it and share it with my friends in China?
Caixia Hou u don’t need to ask for permission lol
Us the band gap big or the electrons or the bound is strong between the electron and the nuclei
Loved your voice Mr
Thank you!!
In my book, this theory was explained like a shit. I was so worried about it BUT thanks to you I understood this theory very well. Thank you so much for this video. 🤗🙂🙂🙂🙂🙂❤❤❤
so if i am right free electron moves and create holes while other electrons fill the hole and that is how the current ae transpoted?
Can U Please Make A Breif Video About How Band Gap Develops In Any Atom Or Material With 2 To 3 Example.!
I'll be Grateful.!
Hi, Thank you very much for your explanation, I understood the valence band is the outermost shell of an atom, then what is exactly the conduction band, is it one of the shells of an atom? or where the free electrons are present that we call C.B?
The conduction band is made up of electrons that are NOT firmly attached to any atoms but just kinda "float" around in what is considered a "sea of electrons". Hopefully that clarifies things!
Nice explanation - keep going and make more.
What is difference between narrow band gap and wider band gap in semiconductor?
First at all thank you for this wonderful explication!!
I have a question. What is the unit of measure of band gap?
Hi Montserrat! The units are electron-volts (eV). I once had an intuitive understanding of what "electron-volt" means but I've lost it and I can't remember. But that is the unit used.
@@CircuitBread electron volt is the energy gained by an electron when potential difference of 1 Volt is provided!
By the way thanks a lot brother😄.
It helped me a lot!
Nice!! I'm wondering... those free electrons in the conduction band are they jumping from atom to atom or still orbiting there original atoms??
The ones in the conduction band are moving freely among the atoms, basically in that "sea of electrons" - so not even jumping from atom to atom but more just operating as completely independent entities. Then when there's an outside force acting on them (creating diffusion and drift currents), they just move.
@@CircuitBread Thanks
So will hole current still be present if no voltage source is applied? I understand it still needs some energy as mentioned but is that provided by the temperature or a voltage source?
You'll get what's called diffusion current when there's no voltage source ( www.circuitbread.com/ee-faq/what-is-the-difference-between-drift-and-diffusion-currents-in-a-semiconductor ) and it will be both hole and electron current. There are two factors to consider, though. One, whether there are any free carriers - which is dependent on temperature and doping, allowing electrons and holes to move around. And then if there are free carriers you have the second factor. And that is if there are forces causing those free carriers to move, which is either diffusion or a voltage source.