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.
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.
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.
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.
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
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
😂😂😂😂😂
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.
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
This is the most underrated video I've come across in my entire online learning journey till now. Kudos sir ❤️🙏👍
Thts all I was searching for .
Thank u very much sir .
Lovely voice..
Hands down one of the best explaination of IV characteristics of a solar cell.
Mr shenoy , i understood the concept fully , thank you profffffff
Nice job. This fellow explains the fundamentals behind the IV curve in a way that makes the IV curve easier to grasp or understand. 👍
most underated video..awesome teaching..
You're a miracle at teaching! Thank you.
The Way of explaining everything awesome bro
Never got a better explanation on this topic before😉
Simply amazing.. thnq so much sir... All I can say is majja aa gaya
Probably the best explanation of the topic.
Thanks a ton!! The last part blew me away! I had never thought of it like this. Very insightful video!
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😁😁😁
thank you very much for this amazing explanation..... makes life easy
Tremendous explanation
Love this, I was thinking about "oversaturation" of cells with the light (panel not connected to anything) - great teacher you are Sir 💪
your concepts are crazy!
This channel should grow to 190 milloin
Incredibly well explained
Exceptional teaching..👏👌
you made my life better!! !!!! thank you
My god u r really having a best teaching capacity best best and the best
My doubts have cleared, thank you so much, sir ❤
I enjoyed semiconductor series
Thanks a lot sir
wonderful explaining, thanks
You are a teacher. Good one!
very good explanation😇
Absolutely classy
Thanks a lot...
finally understood transistor ✌🏻✌🏻✌🏻✌🏻
Very very useful. Thank you!
Simple and logic explanation
Tq mr shenoy.....u made my day🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰 i was waiting for this.......vedio since long time😁😁😁😁😁😁😁😁😁
Awesome. Really helpful.
Great job sir🙏
Hey Khan...thanks man
Thank you very much for making semiconductor videos
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
You explain very well. Thanks
Amazing explanation!
Really awesome explanation 👍
Very nice sir😘😘 I am from India
Sir please start a series covering complete textbook syllabus♥️🙏
so helpful! Thank you
Very nice explanation. I understood clearly.
Thank you alot
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.
Very very very nice explanitation
You are amazing!
First view and first like...
So what we'll do 😢
Fantastic Explanation sir, i loved it the way u have explained 🙏
We need other videos about this topic
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.
your videos are helping me a lot . please keep posting :)
Needed this
Amazing.....
very well explained
Bro Could you please give info about series and shunt resistance ....of a solar cell
Nice explanation
Awesome ❤️
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.
Thank youuu!!!
Excellent
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
thank youuuu
Why doesnt the entire solid turn into depletion region after short circuiting?
This is notvalid question
@@siriram66why?
Thnks
Sir,
Photon at first hit to be n-type materials.
Not to be depletion layar?
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
Fantastic
Why we get a negative voltage under reverse biased condition by attaching a battery?.
Best
sir what is the reference book your using?
Beautiful teaching 💛
How forward biased act as closed switch and reversed biased as open switch?
Sir please complete this chapters
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
Sir.how do you get one electron and hole in depletion region?
isnt voltage energy PER CHARGE, so charge accumulation shouldnt increase voltage ?
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.
GHULAMMAHAYUDIN
ROLL.NO : 281
PHY EVENING
4rth SMESTER
adipoli
Isnt it supposed to be reversed for the I value? Should be up right not below 0 level
Sir why it is called as IV characteristics instead of VI characteristics?
Bcoz we plot I vs V
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
the fact that majority of viewers of khan academy including me are indians
well this channel is for India specifically i guess
ليششش ماكو ترجمة ائربك 🙂
عساس حيفهمونييي هسه 😂😔
Ammar yasir bs physics 4th semester morning 221
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
M.Rashid
Roll.,232
Phy.4th.samester
Morning
Logic gates 😢
You can try edupoint.. its a good channel too!
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Zeshan safdar roll no 242 bs physics morning 4th semester
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