Semiconductors 1: intrinsic & extrinsic semiconductors (Higher Physics)

[@elendor3428]

I've been trying to understand this for the past week. You broke it down in 8 minutes. Fantastic explanation!

[@MrSmithsPhysicsonline]

Fantastic comment - thank you!

[@florenckaf]

I knew somewhere on youtube there must be a great explanation that's understandable, among all those other videos that aren't that. Now I found it. Thank you so much!

[@MrSmithsPhysicsonline]

What a nice comment - thank you very much! Glad you found it useful.

[@stuthomas3593]

Fantastic that you take the time to explain these topics to kids and parents alike... especially now with the dreaded home schooling, yes I'm a parent trying to stay a step ahead of my kids just now :)

[@MrSmithsPhysicsonline]

Thank you - this video in particular took a long time to put together. Still, I often use it with my own classes and it's nice to know that they're helping pupils all over. Are you a Teacher yourself? I could do with learning Python to help with some of the robotics projects I've done on my STEM channel.

[@robertoaraiza7434]

Thank you so much!. I have more 20 years working as an electronic engineer but i like to watch this kind of content as it was the first class.

[@MrSmithsPhysicsonline]

Wow - now that's a compliment! Glad you liked the video. Thank you.

[@sudeepreddy5130]

Now I am in my first electronics class!😁😁

[@JC-db8nd]

I have been trying to understand this exact lesson for 6 years since high school and college. Now I'm preparing for my licensure exams and I found your channel very helpful. Please keep making very informative and well-explained content. Thank you so much.

[@MrSmithsPhysicsonline]

Glad it was helpful! It took me quite a while to get all the content down to 3 videos and make it as clear as I wanted.

[@anasxyz]

i have been trying to understand this for the past couple of days and i couldnt until i found this video. great explanation!!

[@MrSmithsPhysicsonline]

It's a tricky subject - even trickier to try and explain it simply.

[@LoganSZN]

This video helped me to no end for work related to my Apprenticeship, thank you very much.

[@MrSmithsPhysicsonline]

Glad it's helping - what's the apprenticeship?

[@carmel_studio]

thank you very much, Mr Smith! much better explained than in any revision guide!!!

[@MrSmithsPhysicsonline]

Glad you liked it & found it helpful!

[@Nxck2440]

Great lesson, this is a fascinating topic which I didn’t learn in school but understood this just fine! Thank you :) gonna watch your lesson on pn junctions now

[@MrSmithsPhysicsonline]

Excellent - glad you liked it. Thanks for the comment.

[@jeahknutsen5239]

Clear explanation... plus I already fell in love with the yer wee accent!

[@MrSmithsPhysicsonline]

That's the Aberdeen twang you're hearing - fit like min?

[@nadiakhairi7184]

Thank you very much. You covered a long lecture in some seconds by amazing way. Lots of love from Libya💓

[@MrSmithsPhysicsonline]

Glad it was helpful! All the best from sunny Scotland.

[@dr_zix]

quality mate. will be using these vids a lot

[@MrSmithsPhysicsonline]

Thanks - these 3 videos took so long to make, so I'm glad they helped!

[@topudey43]

Many many thank you sir for your helpful discussion about semiconductor.... No doubt about semiconductor after looking your video .. Love from my heart ❣️❣️❣️ From**Bangladesh (Sylhet) ❣️❣️❣️❣️

[@MrSmithsPhysicsonline]

It's my pleasure - it's a tricky subject so I'm glad it helped.

[@ryanharris7891]

Finally some1 who can explain this, top job mate :) cheers

[@MrSmithsPhysicsonline]

It took a lot of work to make a series of videos that explain this topic - they help me a lot when I'm teaching Semiconductors to my class as well! Glad you found it useful.

[@ryanharris7891]

@@MrSmithsPhysicsonline the hard work shines through :)

[@TSSsniper]

Thank you sir for clearing my doubts . U r amazing sir... Love from INDIA..

[@MrSmithsPhysicsonline]

My pleasure - glad you liked it!

[@macrame-b1v]

And love from Luxembourg as well.

[@knogardreruza]

HQ video ! good job !

[@MrSmithsPhysicsonline]

HQ comment - thank you!

[@alaveroA]

Thank you mr. Smith!

[@MrSmithsPhysicsonline]

Glad you found the video helpful - thank you for the comment.

[@nehirtek]

This topic seemed unlearnable to me until i watched this video, thanks a lot

[@MrSmithsPhysicsonline]

Thank you. I'm teaching this to my own class tomorrow and will probably show the video to them - it makes teaching the topic easier too!

[@blairy1424]

Great explanation, helped a lot

[@MrSmithsPhysicsonline]

Glad it helped - thank you!

[@gamieo5117]

You are the best teacher

[@MrSmithsPhysicsonline]

I keep telling the kids that, but they don't all believe it (yet).

[@aligunes-lo5ls]

Really good explanation 💙 thank you

[@MrSmithsPhysicsonline]

Thank you - glad you liked it.

[@testval]

Thank you very much for this, my entire class struggled to get our heads around this.

[@MrSmithsPhysicsonline]

Glad you found it helpful - it's a tricky subject and most pupils find it difficult. Make sure that you look for some past paper questions on semiconductors so that you can familiarise yourself with what might come up.

[@ely7150]

Thank you!!! I needed this for my trial exams

[@MrSmithsPhysicsonline]

Glad it helped - hope the exam goes well!

[@ely7150]

@@MrSmithsPhysicsonline Thanks!

[@hamdirihab3319]

Thanks a lot, Greeting from Tunisia

[@MrSmithsPhysicsonline]

Hello from sunny Scotland - glad you found the video useful.

[@sudeepreddy5130]

Really amazing explanation!

[@MrSmithsPhysicsonline]

Glad you think so - this is a series of 3 videos which took a long time to research. I use them myself when teaching the topic!

[@annalyncaromayan7570]

i had a final interview nextweek, and I don't know what's day is. but i try my best to understand this conductors and insulator, hope i can explain it clearly on my interview

[@MrSmithsPhysicsonline]

Best of luck with the interview. All the best!

[@iainmurdoch8459]

You are some boy, Mr Smith

[@MrSmithsPhysicsonline]

True - a physics teaching machine!

[@snehamathivanan7679]

Thanks a lot, Sir...very clear explanation ...

[@MrSmithsPhysicsonline]

Thank you! It's a tricky topic, so I hope this helped explain it.

[@snehamathivanan7679]

@@MrSmithsPhysicsonline please make more such videos on semiconductor,Sir....if time permits..

[@MrSmithsPhysicsonline]

The 3 videos I made cover the basics of semiconductor theory as taught in the Higher Physics course. What would you like another video to cover? It's a tricky subject so I might make another if it's of use and I've got time. Thank you for the comment.

[@saketgame4285]

Nice lecture , that's what i wanted for my weekend exam 😊

[@MrSmithsPhysicsonline]

They're giving exams at the weekend? That's not fair - weekends are for cycling and playing on the computer!

[@saketgame4285]

I wish , I'll have once after completing this two years of college.

[@freed9513]

This lesson helped me so much aaaaaa thank you!

[@MrSmithsPhysicsonline]

Cheers!

[@prof.narayanasirimuthu1188]

You’re amazing , thank you so much !

[@MrSmithsPhysicsonline]

Glad it helped!

[@vachan-maker]

Thanks this lesson helped me. 😀

[@MrSmithsPhysicsonline]

Glad to hear that!

[@malikyawarshafi1641]

Thank you man .make more videos

[@MrSmithsPhysicsonline]

Thank you, I will!

[@uttamkumbhar8106]

Thanks a lot sir.

[@MrSmithsPhysicsonline]

Glad you liked it.

[@nellvincervantes6233]

Why hole produce positive charge without changing the number of protons of silicon? Will it not violate conservation of charge? 🤔🤔

[@MrSmithsPhysicsonline]

The hole is just thought of as a positive charge, although it's actually the absence of an electron at that position in the crystalline lattice. The semiconductor is still electrically neutral.

[@shalinirao1520]

It's really good explanation

[@MrSmithsPhysicsonline]

Thank you - I found it difficult to make this video. I did a lot of research so had a good understanding of semiconductors (better than I have now). The tricky bit was working out how I would explain it as clearly as I could. Glad you liked it!

[@GrandMarshalGarithos]

Dope video. Why wouldn't you have a dopant with a donor level in the conduction band rather than below it?

[@MrSmithsPhysicsonline]

True that!

[@beingkashmiri145]

It's was really helpful thanks love from Pakistan sir keep it up

[@MrSmithsPhysicsonline]

Thank you - love from Bonnie Scotland!

[@TheCreepersAlive]

in the course spec, it says some metals have partially filled valence bands and other metals have overlapping valence and conduction bands. it also says those with partially filled valence bands have higher conductivity than those with overlapping bands. how could this be if conduction requires electrons in the conduction band but the valence band isn’t even full?

[@MrSmithsPhysicsonline]

In order to conduct, a material must have free electrons within its conduction band or holes in its valence band.

[@hafizhashir5853]

Thanks

[@MrSmithsPhysicsonline]

You're very welcome!

[@sadiaazhar1847]

You are some lad mr smith, cheers for this! :)

[@MrSmithsPhysicsonline]

You're too kind!

[@sadiaazhar1847]

@@MrSmithsPhysicsonline no, YOU are too kind!! your videos have helped so much

[@dimple_styles19oneD]

Somewhat late...to come across your video...but thank you so much...love from Kerala, India ❤️

[@MrSmithsPhysicsonline]

It's never too late for Physics! Glad you found it useful - all the best from Scotland.

[@ninisanjay6638]

thanks so much!

[@MrSmithsPhysicsonline]

You're welcome!

[@hyunmyunglee8962]

Sir, what is the thing making the conduction that is taking place? The electrons that has jumped to the conduction band? Or the motion of wholes created in the valence band??

[@MrSmithsPhysicsonline]

Both are responsible for conduction in the semiconductor.

[@pavansangle1019]

Nice

[@MrSmithsPhysicsonline]

Thanks - glad you liked it!

[@divyaperiyasamy1499]

thank you sir

[@MrSmithsPhysicsonline]

Thank you - all the best!

[@dhanunjayrao7493]

When will u give as a live class bro

[@dhanunjayrao7493]

When will u give us a live class on topic motion in a straight line

[@MrSmithsPhysicsonline]

I'm hoping to do live lesson at some time. I just need to work out what I'm doing with my other channel and I'll need to write some content.

[@cosettea1986]

So if enough heat is given to a insulator, will it conduct?

[@MrSmithsPhysicsonline]

I think I responded to this question before but I'd made a mistake in assuming you were talking about conduction of heat rather than electrical conduction. Insulating materials will increase in conductivity as temperature increases but, depending on the material, they may actually start to disintegrate before there is any noticeable change. It all depends on the material properties of the insulator and the band gap.

[@nurr7162]

it is possible but since the energy will have to be so great it will damage the component

[@김선주-z4n]

Soooooo NICE

[@MrSmithsPhysicsonline]

Thank you - all the best!

[@yusufrumi1626]

Cheeers mate

[@MrSmithsPhysicsonline]

Thank you - all the best!

[@surendraparikh39]

U r 😎😎😎 keep it up 🙏🙏

[@MrSmithsPhysicsonline]

Thanks ✌️

[@Moon-ve9uc]

صحيح كلشي مفتهمت بس عاشت ايدك

[@MrSmithsPhysicsonline]

Glad you understand everything - it's certainly a tricky subject. Thank you!

[@vource2670]

I think I’m just terrible at this lol

[@MrSmithsPhysicsonline]

Keep at it and you'll get better - find some past paper questions on the topic and read the marking scheme carefully. Also, watch the 3 semiconductors videos a second or third time - the points covered are straight from the questions that have been asked before and are most likely to come up again. Good luck!

[@themisterier]

Scottish accent ay?

[@MrSmithsPhysicsonline]

Och aye!

[@sudeepreddy5130]

Thanks

[@MrSmithsPhysicsonline]

You're very welcome!

[@ahmedmostafa2412]

thanks

[@MrSmithsPhysicsonline]

You're welcome!