How do solar cells work?
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- Опубліковано 29 кві 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
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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 :)
@Rowan Kylen Lately I have been using flixzone. Just google for it :)
after watching so many videos, now i get it how how this works...
Its freking 2 AM what am I doing here
Very illustrative and rigorous explanation, helping me study for a Photovoltaic Systems test.
Thanks!
Best animation explaining how something works so far
This is what we call an explanation , this is the best vd i watched explaining the photovoltaic cells working process, big up
I have not seen any better explanation than this video on this topic. Many thanks.
Very explanatory, totally recommend this to starters and professionals alike
You just made my day!!!!
You just made school a whole lot easier!!! THANKS!!!!
Good comparison with leaf and nice explanation
wonderfully concise and clear explaination, thank you!
Wow! This video is so well put together. Really helped me with my project!
Tomorrow is my exam of science,This will help me a lot. Thank you
Thank you so much for this video! im having a project and you really saved me. Ty for the great illustration.
A very easy way of making people understand
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
Thank you so much for this awesome simply explaination
.
Wow, this is fantastic! Speechless
Its a real informative clip. Thanks
Such a great video, which software did you use to animate this? these animations are so smooth
The most simplistic explaination. Thanks
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.
Really good explanation and easy to understand. Thanks!!
Thanks for this info I needed this ☺️☺️☺️☺️☺️
great video, thank you :)
Fabulous teaching but teach elaborately🧐
Quite helpful keep providing knowledge to us
Best explanation ever!!!!! thanks a lot :)
A perfect explaination
Helpful. Thanks
Wow this was great
Very good. You nailed it 🌞
Thank you very much helped me alot in class keep up the good work
Explained well very nice and easily explained
Now this is what "a perfect explanation" means!🙌
Nice
Best video on solar energy
Nice explanation sir
Best explosion Sir
Very nyc video to show how solar cells work 😍
Well explained thanks
it helped me with my project!
Thanks for your kindly information 😊😊👍
thank you for the wonderful explanantion
Very useful Thankyou....
Going to show this to my kid in the future when it comes to the birds and the bees talk
Best video
Thank you Sir
Excellent. Thanks
You are wonderful! thank you so much.
Oi
This helped alot. Thanks!
Super, best explaination, thank u very much
Very very very good vedio.Thanks sir
thankyou you explain it very nicely
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 lecture 🙂 👍👍👍
Wow this video is a gold.
Super video bro i understand the concept very clearly
For board exam
Thank you
Great Explanation Buddy
amazing video
i hope a very helpful and useful information is given by you
Thank you Sir
one of the best indepth explanation.....Now i can say what is the depression layer... Nc content .........
how do l get the energy from the panel to my phone or toaster can you please explain application. TY
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
This help me a lot❤️😀
❤❤❤❤❤ much love from Uganda
So in a nutshell, we get energy from the light’s velocity when the wave hits the material?
Very nice explain
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?
thank you sir
Best explanation on the internet yet!
Good presentation
I owe you my life
Super..
Thanks
Wow!
You're video is so amazing, can i use your video for my thesis?
this helped me so much with my school wrok😊🤩🤩🤩
i totaly agry
the thin metal lines only would only let a certain polarity of visible light through, no?
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?
very nice, clear and informative video.. thankss!
Send more videos
Super Sir
GREAT
How many cold the solar I bike it
good workkkk....
thanks
Nice.....
N type - Depletion Region - P type must be very well known as well as sun position and azimuth to give this conclusion with SO GOOD ABSTRACT for begging. But also we must consider that day = 24 hours & and bring more development Methods for night period
GOOD ABSTRACT 👍
ULTIMATE
Software you use for annimation? I am interested in learning annimation so....
Hi! Do you have a source for the 350-1140nm window? I'm trying to do more research into the topic. Thank you!
This is a great way of explaining photovoltaic principle to general audience. I think it would be even better to put put this into the context. First, efficiency of photosynthesis is 0.3 - 0.38 to obtain liquid fuel, biodiesel or ethanol. In contrast, efficiency of typical silicon PV cell today, 15 - 18% is magnificent so, the wording on 'future challenges on improving efficiency' is misleading. Second, energy storage. Maybe, at the time of making this video it was a challenge. Today, the cost of utility scale battery storage is cheaper than pumped storage hydroelectricity. So, renewable energy (lead by wind) is actually cheaper than coal, nuclear and even earth gas. Thank you!
Gone be legends of editing and education
better then my high school
Can they add some more Layers. For compressing the charge. Phosphorus -3 charge. Boron - 1 charge. They cells should only power a battery and then the battery charges the Home. Can we amplifier the charge to make the battery charge faster with less sun or with lower frequency ? Like a bigger entrance layer for Frequency and a smaller exit. A funnel , or like the refrigerator or heat pump. Pushing things into smaller spaces. Maybe the people that make microchips can make better smaller Frequency cells.
Please make the video of solar cell working model
Thank you so much for this awesome simply explaination
So live it
What components used in middle layer