How do solar cells work?
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- čas přidán 29. 04. 2018
- What are solar cells and how do they work? Watch this video to find out!!
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For those confused regarding why the electrons go to the top (Negative Plate) rather than bottom (Positive Plate), it is because of the valence forces at work for Phosphorus and Boron. Phosphorus is inclined to gain up to 3 additional electrons to reach valence stability (fill the valence shell), whereas Boron is inclined to lose two electrons to reach valence stability (empty the valence shell). These forces are what direct the electron toward the net negative plate, because the valence forces are stronger than the electromagnetic forces in this particular system. The electromagnetic forces go to work once the electron enters the electrical circuit.
Thank you so much! You have zero idea how long I have been trying to find an answer for this.
Oh! makes sense now TYSM
Hm.. Photoelectric effect happens in the depletion region between Phosphorus and Boron where the electric field is directed towards N (Phosphorus).
Both N and P regions are electrically neutral by default because P has extra proton to neutralize its extra electron in the outer shell, and Boron has one proton less to neutralize a lack of one electron.
The electric field happen in the depletion region due to free electrons from N filling free spaces in P region, and now the N side of depletion region has Phosphorus ions (without extra electron) and P side of the depletion region has Boron ions (with extra electron).
This result in an electric field pointing to N region (depletion region is positive on N side and negative on P side) which pushes electrons to N and holes to P.
The photoelectric effect happens when photon hits depletion region and creates a hole and electron which are channeled to the corresponding sides making N side more negative and P side more positive, if you close the circuit the electrons would flow through the wire from N to P making it stable again and this creates electricity as long as the sun is hitting the depletion region. That's why the N layer is thinner than P layer, so that the photon travels less to the depletion region.
This video doesn't go into detail about depletion region as some other videos about NP junction.
Thanks. I used to think N-type more electrons so flowing should go from N to P
So instead of the electric field you're saying that electrons goes to the N Layer and Holes goes to P Layer when the light hits the depletion region because the valence forces of Ph and Boron. it's a little bit confusing bc i saw a lot of videos that explain that phenomenon is due to electric field
This panel can put out close to 100 watts czcams.com/users/postUgkxOqI2yqX0XVrhR2BMJciTWrHJpG8FhJyg when positioned in the appropriate southernly direction, tilted to the optimal angle for your latitude/date, and connected to a higher capacity device than a 500. The built in kickstand angle is a fixed at 50 degrees. Up to 20% more power can be output by selecting the actual date and latitude optimal angle.The 500 will only input 3.5A maximum at 18 volts for 63 watts. Some of the excess power from the panel can be fed into a USB battery bank, charged directly from the panel while also charging a 500. This will allow you to harvest as much as 63 + 15 = 78 watts.If this panel is used to charge a larger device, such as the power station, then its full output potential can be realized.
This is absolutely the best explanation. Made me audibly have that "aha!" moment. Kudos to the creator.
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I know I'm quite off topic but does anybody know a good website to stream newly released series online?
@Rowan Kylen try Flixzone. You can find it by googling :)
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Very illustrative and rigorous explanation, helping me study for a Photovoltaic Systems test.
Thanks!
Best animation explaining how something works so far
Very explanatory, totally recommend this to starters and professionals alike
after watching so many videos, now i get it how how this works...
wonderfully concise and clear explaination, thank you!
I have not seen any better explanation than this video on this topic. Many thanks.
Good comparison with leaf and nice explanation
This is what we call an explanation , this is the best vd i watched explaining the photovoltaic cells working process, big up
Wow! This video is so well put together. Really helped me with my project!
You just made my day!!!!
You just made school a whole lot easier!!! THANKS!!!!
Thank you so much for this awesome simply explaination
.
The most simplistic explaination. Thanks
Its a real informative clip. Thanks
Thank you so much for this video! im having a project and you really saved me. Ty for the great illustration.
Really good explanation and easy to understand. Thanks!!
Quite helpful keep providing knowledge to us
3:36 why would P accept the positive hole, since positives are supposed to incline towards negatives right???
In the gray zone the there's postive charges that are attracted toward the red zone, and negative charges that are attracted toward the green zone, this creates an electric field pointing down (in the image from the video), so when light hits on the solar cell, some electrons get free and consequently some postive holes, this free elctrons are driven up by the electric field and the positve holes are driven down.
Sorry for bad english.
Wow, this is fantastic! Speechless
Thanks verry much man! For long time ago i have read pdf books and search about videos to understand how the hole principles works and i have understand it in this video realy thanks
Helpful. Thanks
Such a great video, which software did you use to animate this? these animations are so smooth
Nice explanation sir
A perfect explaination
thank you for the wonderful explanantion
Best explanation ever!!!!! thanks a lot :)
thankyou you explain it very nicely
great video, thank you :)
Excellent. Thanks
Explained well very nice and easily explained
Well explained thanks
it helped me with my project!
Very good. You nailed it 🌞
Thanks for this info I needed this ☺️☺️☺️☺️☺️
Super, best explaination, thank u very much
Very useful Thankyou....
Best video
Thank you Sir
Fabulous teaching but teach elaborately🧐
Best video on solar energy
You are wonderful! thank you so much.
Oi
Hi! Do you have a source for the 350-1140nm window? I'm trying to do more research into the topic. Thank you!
Amazing lecture 🙂 👍👍👍
Thank you very much helped me alot in class keep up the good work
Thanks for your kindly information 😊😊👍
Very very very good vedio.Thanks sir
Thank you Sir
Great Explanation Buddy
Thank you
Now this is what "a perfect explanation" means!🙌
Nice
Software you use for annimation? I am interested in learning annimation so....
thank you sir
Very nyc video to show how solar cells work 😍
Wow this was great
Very nice explain
Tomorrow is my exam of science,This will help me a lot. Thank you
one of the best indepth explanation.....Now i can say what is the depression layer... Nc content .........
Super video bro i understand the concept very clearly
For board exam
Could anyone explain why the electrons move upward, towards the negative side? You'd expect them to move to the positive holes downward as they are attracted? Also, how can a hole move? I assume it are ''holes'' on the shell of the atoms, but how does that move around? Thanks
The "holes" are areas where there are fewer electrons. In reality, the electrons around the hole shift around to displace the hole. As for the electron direction, that's because the electrons want to meet the positive charges/holes through the path of least resistance. Although the distance going straight down is smaller, the resistance/conductivity makes that impossible.
thanks!
so there is an additional layer of material that acts as resistance?
Bob - I don't understand why the electrons move towards the N-type and not the P-type. I thought the least resistance would be going towards opposite charges (negative to positive) and not like charges (negative to negative).
ABC The path of least resistance is actually through the wires into the component being powered which makes its way back to the holes on the bottom
You're video is so amazing, can i use your video for my thesis?
Best explosion Sir
Why do the electrons go up into the strip when hit by photons, wouldn't the electron hop over the junction into the p type material. Opposite charges attract, does the electron choose the strip on top instead because it is the path of least resistance?
Wow this video is a gold.
Good presentation
Thanks
Very good video. Thank you.
Begs the question of what the utility companies will do if/when houses are net zero? Still need a grid. Who’s gnna pay for the maintenance?
ok but what are the thick line and wires on teh top? Are those on the top and bottom?
This helped alot. Thanks!
i hope a very helpful and useful information is given by you
how do l get the energy from the panel to my phone or toaster can you please explain application. TY
copper wire I'd assume
Pretty good video. Did see an error though...Infrared light is actually important and does not just pass through, it contributes to production as well.
Hey, _you_ can't be Garrett L -- _I'm_ Garrett L!
amazing video
Wow!
What software do you use to animate this?
Super..
This help me a lot❤️😀
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What components used in middle layer
very nice, clear and informative video.. thankss!
Send more videos
Nice.....
Why does the n type layer doesn't repel the incoming electron
GREAT
So live it
Super Sir
Going to show this to my kid in the future when it comes to the birds and the bees talk
Best explanation on the internet yet!
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good workkkk....
thanks
Thank you so much for this awesome simply explaination
Please make the video of solar cell working model
So in a nutshell, we get energy from the light’s velocity when the wave hits the material?
3:57 Okay, now when all the electrons move to the positive side, how does the solar cell get back its protons and electrons in the center to repeat the process? Or is that it for the cell and it cannot be used any longer? I'm pretty sure the latter is not the case, but I don't know where it gets its other pros and electrons.
I learnt that the protons don't move at all, it's just the electrons are liberated, as in they are no longer bonded to the atom. When the electrons do work in the wire, it releases its energy therefore goes back to a lower state of energy, there-in the positive ions can now "capture" the free electrons once more to form the bond to make the atom again.
This processes is repeated indefinitely as long as photons provide the energy needed for the electrons to be liberated in a process called photonic emission, where electrons absorb the energy from photons of a specific wavelength.
Though it is said that electrons move, it is not the case. Only the charge moves. Charge from one electron is transferred to next and so on. Electrons are present every where, even in electrical cables i.e., copper/any metal. So energy from electrons in solar cells gets transferred to electrons in copper thus it propagates to load where it is used to convert electricity to any other energy. Meanwhile in solar cell when ever an electron is deprived of its energy it goes back to its normal state and gets ready to accept photon energy again from sunlight.
Hope this will clear your doubt. I too had this doubt initially but after going back to quantum physics principles I got this understanding. I don't know if I am correct but my theory fits the answer.
By sunlight it gey more positive charge and electrons
bit.ly/2C0qCeE?-home-solar-panel-system
Its freking 2 AM what am I doing here
hi may i use your video for my university project??
ULTIMATE
nice. useful for children to complete their activities
How many cold the solar I bike it
the thin metal lines only would only let a certain polarity of visible light through, no?
this helped me so much with my school wrok😊🤩🤩🤩
i totaly agry