00:02 Solar cells convert light into voltage through the photovoltaic effect 01:42 As more electron-hole pairs accumulate, the voltage will eventually reach an equilibrium. 03:22 Solar cell IV characteristics explained 05:06 Short circuit in solar cells results in zero voltage and very high current. 06:39 Current is dependent on light intensity 08:17 Adding resistance affects current and voltage. 09:56 Increasing resistance increases voltage and reduces current. 11:32 Solar cells can't generate a negative voltage, but can achieve it by reverse biasing a battery.
Appreciate your videos, just a minor correction, there is nothing called normal pn graph, it should be I-V graph under dark and under light/bright/illumination.
So the current considered here is inside the cell... It's very confusing as some people shows the iv characteristics in 4th quadrant and some shows in 1st quadrant.
Since u are adding resistance, the voltage will increase but why are you plotting it in the negative side of the graph....im confused. I think this graph will be plotted in the 1st quadrant and not the 4rt
solar cell is actually something that doesn't need of any biasing. But Photodiode does. Please do variate that. because to extend the IV curve at the end, you have confessed that what if diode has been connected to the biasing element. Rest all have a clear point in explanation.
Sir at 05:40 You mentioned that there won't be any charges left since they recombine and get destroyed, and that there won't be any charges accumulated. But what about the newly created charges (due to photons)?won't they accumulate? Will they too get destroyed immediately?
E.H.P generated by photon will travel towards N&P region continuously untill the photon incident on junction. But Due no load or short circuit of P & N terminal they start easily recombine also .Therefore charge will not accumulate on both P & N region just like open circuit case.As a result Isc will be max. In ckt. But Voc will be zero.
i have a doubt, current flows opposite to electron flow, therefore if electron is accumulated at n-type and holes are accumulated at p-type then electron will flow from n-type to p-type and current will flow from p-type to n-type. does that makes sense?
let's me correct a bit for you. Electron will move from p-type to n-type because the affect of built-in electric field which was form during the contact of p-type bulk and n-type bulk. More detail, electron and hole will diffuse toward opsite side. Then at the depletion area electron will be localize at p-type side, hole will localize at n side. Generated electron/hole will be atracted by hole/electron (built-in field direction) toward to n/p-type bulk
The electrons move to the N side, which means there is a large number of electrons and the holes are the minority, so the probability of recombination is low. The opposite goes to the holes.
I think increasing light intensity will not affect the current because current depends upon frequency of light (plank's equation) not intensity of light. Hence, more number of photons do not guarantee more current but higher frequency do.
Increasing light intensity means more photon which means more splitting of electron hole pair and generation of more free electrons and holes>>>>> & current is directly proportional to number of charge carriers
You're so good at explaining! You should do an online course for university lecturers to learn how to teach!
He did
your videos are really well made. I really enjoyed semiconductor series!!!
Brilliantly explained !! Couldn't find a more easier and practical approach 🔥✨
Simply put, easy to understand......just what I needed!! Thank you
Nice job. This fellow explains the fundamentals behind the IV curve in a way that makes the IV curve easier to grasp or understand. 👍
Thts all I was searching for .
Thank u very much sir .
Lovely voice..
This is the most underrated video I've come across in my entire online learning journey till now. Kudos sir ❤️🙏👍
00:02 Solar cells convert light into voltage through the photovoltaic effect
01:42 As more electron-hole pairs accumulate, the voltage will eventually reach an equilibrium.
03:22 Solar cell IV characteristics explained
05:06 Short circuit in solar cells results in zero voltage and very high current.
06:39 Current is dependent on light intensity
08:17 Adding resistance affects current and voltage.
09:56 Increasing resistance increases voltage and reduces current.
11:32 Solar cells can't generate a negative voltage, but can achieve it by reverse biasing a battery.
Hands down one of the best explaination of IV characteristics of a solar cell.
The Way of explaining everything awesome bro
Mr shenoy , i understood the concept fully , thank you profffffff
Simply amazing.. thnq so much sir... All I can say is majja aa gaya
You're a miracle at teaching! Thank you.
Never got a better explanation on this topic before😉
Thanks a ton!! The last part blew me away! I had never thought of it like this. Very insightful video!
most underated video..awesome teaching..
Appreciate your videos, just a minor correction, there is nothing called normal pn graph, it should be I-V graph under dark and under light/bright/illumination.
All the videos of this sir have so good explanation that people forget to like👍.
Thank you so much, I was scrounging for the explanation and this is the exact thing I wanted😁😁😁
So the current considered here is inside the cell... It's very confusing as some people shows the iv characteristics in 4th quadrant and some shows in 1st quadrant.
thank you very much for this amazing explanation..... makes life easy
Probably the best explanation of the topic.
Tremendous explanation
Bro Could you please give info about series and shunt resistance ....of a solar cell
Tq mr shenoy.....u made my day🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰 i was waiting for this.......vedio since long time😁😁😁😁😁😁😁😁😁
Incredibly well explained
Very very useful. Thank you!
Since u are adding resistance, the voltage will increase but why are you plotting it in the negative side of the graph....im confused.
I think this graph will be plotted in the 1st quadrant and not the 4rt
solar cell is actually something that doesn't need of any biasing. But Photodiode does. Please do variate that. because to extend the IV curve at the end, you have confessed that what if diode has been connected to the biasing element. Rest all have a clear point in explanation.
Sir please start a series covering complete textbook syllabus♥️🙏
wonderful explaining, thanks
Exceptional teaching..👏👌
Simple and logic explanation
Fantastic Explanation sir, i loved it the way u have explained 🙏
My god u r really having a best teaching capacity best best and the best
Absolutely classy
My doubts have cleared, thank you so much, sir ❤
I enjoyed semiconductor series
Thanks a lot sir
You are a teacher. Good one!
I have read like 3 books on band theory many times and I failed to understand and only this one video I have understood all
Very nice explanation. I understood clearly.
Thank you very much for making semiconductor videos
We need other videos about this topic
You explain very well. Thanks
Awesome. Really helpful.
Great job sir🙏
Very very very nice explanitation
Thank you sir.
This channel should grow to 190 milloin
Really awesome explanation 👍
Why we get a negative voltage under reverse biased condition by attaching a battery?.
your videos are helping me a lot . please keep posting :)
you made my life better!! !!!! thank you
sir what is the reference book your using?
Thnks
Thanks a lot...
finally understood transistor ✌🏻✌🏻✌🏻✌🏻
so helpful! Thank you
Amazing explanation!
First view and first like...
So what we'll do 😢
Very nicely explained
Sir.how do you get one electron and hole in depletion region?
Hey Khan...thanks man
How forward biased act as closed switch and reversed biased as open switch?
isnt voltage energy PER CHARGE, so charge accumulation shouldnt increase voltage ?
Sir at 08:51, why is it that there needs to be a Potential difference for current to flow across a resistance?
Ohm's law. V = IR. If you are wondering why Ohm's law, then I recommend going back to current electricity unit
You are amazing!
Sir at 05:40
You mentioned that there won't be any charges left since they recombine and get destroyed, and that there won't be any charges accumulated. But what about the newly created charges (due to photons)?won't they accumulate? Will they too get destroyed immediately?
E.H.P generated by photon will travel towards N&P region continuously untill the photon incident on junction. But Due no load or short circuit of P & N terminal they start easily recombine also .Therefore charge will not accumulate on both P & N region just like open circuit case.As a result Isc will be max. In ckt. But Voc will be zero.
i have a doubt, current flows opposite to electron flow, therefore if electron is accumulated at n-type and holes are accumulated at p-type then electron will flow from n-type to p-type and current will flow from p-type to n-type. does that makes sense?
let's me correct a bit for you. Electron will move from p-type to n-type because the affect of built-in electric field which was form during the contact of p-type bulk and n-type bulk. More detail, electron and hole will diffuse toward opsite side. Then at the depletion area electron will be localize at p-type side, hole will localize at n side. Generated electron/hole will be atracted by hole/electron (built-in field direction) toward to n/p-type bulk
Needed this
Thank youuu!!!
thank youuuu
Isnt it supposed to be reversed for the I value? Should be up right not below 0 level
Nice explanation
Amazing.....
Why is it I V characteristic not V I characteristic?
Very nice sir😘😘 I am from India
Why is there no recombination of electrons and holes when it accelerates towards N and P side?
The electrons move to the N side, which means there is a large number of electrons and the holes are the minority, so the probability of recombination is low. The opposite goes to the holes.
Sir please complete this chapters
Excellent
Awesome ❤️
Fantastic
Best
Ammar yasir bs physics 4th semester morning 221
GHULAMMAHAYUDIN
ROLL.NO : 281
PHY EVENING
4rth SMESTER
Sir why it is called as IV characteristics instead of VI characteristics?
Bcoz we plot I vs V
Beautiful teaching 💛
adipoli
you said zero voltage and high current flows, how is this possible becausevoltage is the reason why current is produced
we are talking about Open-circuit voltage, not just a voltage. And short circuit current also not only current
I think increasing light intensity will not affect the current because current depends upon frequency of light (plank's equation) not intensity of light. Hence, more number of photons do not guarantee more current but higher frequency do.
Increasing light intensity means more photon which means more splitting of electron hole pair and generation of more free electrons and holes>>>>> & current is directly proportional to number of charge carriers
ليششش ماكو ترجمة ائربك 🙂
عساس حيفهمونييي هسه 😂😔
I love you
M.Rashid
Roll.,232
Phy.4th.samester
Morning
256 present
Zeshan safdar roll no 242 bs physics morning 4th semester
Faiz rasool 279
Logic gates 😢
You can try edupoint.. its a good channel too!
the fact that majority of viewers of khan academy including me are indians
well this channel is for India specifically i guess
the lecture was good but your accent is cringe...
Thank you sir
Thank you alot