This video is great. The explanation and illustration are the clearest that I've seen of anything. I now feel like I totally understand how solar cells work now. I recommend it to anyone.
Really really well done explanations. Wish you guys had a full budget to increase the production values, but still just a great resource. Thanks for sharing it.
This video really help me understand how solar cells work to generate electricity from photons of sunlight. Thank you so much! Best video on the subject I’ve seen thus far!
I have mind to share and to make a chance to see this video together with our members in the next week. This treats very fundamental information to understand.
This video has greatly helped to understand Diodes and Transistors with other semi-metals added on, one behaving as P (Positively Charged) and the other as N (Negatively Charged). The fact that the Sun Heat excites electrons depending upon the wave length it explains another phenomena not mentioned like is Resonance Energy.
it's the best explanation i've ever seen...however i think i should download it soon. I don't get everything yet and I think I should replay it for a few times. Who's too generous to discuss or explain this to me further? :)
You have to look at the material before the junction is formed! look at the video at about 15:40, there she explains that in n-type material there are free roaming electrons, because the phosphorus has one electron too much for binding them all. So in n-type there's a lot of free electrons, which means it has free negative charges. (it is true though, that at that point the crystal is still neutral, but actually, if you look at the whole junction, it is neutral as well)
@lavpatel39 The Answer is not an easy one! But the biggest problem with solar cell is their efficiency. Which means only part of the energy received from the sun can be converted to electricity. The efficiency so far achieved in the market is around 18%. An improved efficiency means one can generate the same amount of power on a reduced area, the area is related with production cost of the solar cell and associated mounting structure.
oh yeah also wouldn't the solar cell be limited to capturing energy only from a few narrow bands of light? what about the rest of the energy? why not use a prism to create a rainbow, and then shine the different colors of light on other elements in the same p-n configuration? is that even possible
seriously why is it that we cannot get a high definition video when it come to education stuff but we can get the good 720p to 1080p in some of the stupid random stuff ?
I dont think the video is right anout the number of electrons in the 3 shell. I think the 3. shelle can hold up to 18 e- and the 4. shell can hold up to 32 e-...
I like the structure of this video but I really think you need to change the term 'orbit' it gets kids thinking like planetary orbits. I suppose if a nobel laureate thinks thats acceptable.....maybe I shouldn't be too worried.
dunno, but after all this time, she is still freaking me out. I think I will continue to be freaked out by this lady till the end of time. Or till the aliens come, in 2012 ;)
Trying to become rich from inventions is how you end any possibility of becoming rich (your own greed is used against you to defeat you) because you are very small attacking a very rich established powerful biz, who own the patent department so as to be the first to know of new threats to there establishments,The only way to win is to give new ideas away for free earn credibility then right a book about how you came up with idea!!!
man how you people figure this stuff out on your own?.. I'm going to reinvent the solar cell and capture 100% suns energy using fractal dome lens technology... you guys use flat surface, but due to the angle of incidence when the sun is low in the sky the power absorbtion goes down. Also light comes from all directions at once.. you gotta catch it all simulteneuously.
the narrator lady is freaking me out big time. watch her body language and face expression..... there is obviously something horribly wrong with her, but then i have met a lot of female physics teachers with similar problems. Either that, or she's never been in front of a camera before and is terrified, but trying to fake it. Don't try to hide fear people, you can't.
Miguel Contreras I agree. I was very ignorant when I commented. However, wind and solar are utter failures at producing cheap, plentiful, reliable energy that life and progress require. The reasons have been well-understood for decades. Because sunlight and wind are low-density energy, they require vast land and material resources to capture. And worse, because sunlight and wind are unreliable energy, they always need a backup, which is almost always fossil fuel.
![Intro to Solar Orientation [Solar Schoolhouse]](http://i.ytimg.com/vi/OR8EQ0DWpPw/mqdefault.jpg)
Doing a project on solar panels, this clears up a lot of different explanations. THANKS!
I Really Like The Video From Your Explore the science of the silicon solar cell, currently the most important generator of solar electricity
This video is great. The explanation and illustration are the clearest that I've seen of anything. I now feel like I totally understand how solar cells work now. I recommend it to anyone.
explained in a plain way....that's how teaching should be. Anyhow , many thanks for the share!!!
Thanks for this most excellent video! This is the best explanation of how a solar cell works and found it very easy to follow.
Excellent explanation!
superb video...the perfect understanding.....
It was simply super.. Grt work by all pepopleinvolved in it
This is by far the clearest explanation of semiconductor structure I have seen.
Great Video. It explains a more complex concept in a simple way. I enjoyed it. Thanks.
Thank you very much. It was very very helpful to me.
Thanks for watching UCTV all!
HATS OFF! TO MELISSA WOODS. WONDERFUL TEACHER.
Really informative and useful vedio.. Thanks for sharing
I love this video. Very simple and prescise explaintions. Keep it up and thank you!
+DefensorPrime Oh crap I spell explanation wrong!!!
Very simple explanation ! Easily understood the concept .
Good job with the presentation. You covered a lot of basic concepts in a very short interval of time.
John
I am a graduating electrical engineer and you have explained this concept better than my professors. Great basics
Excellent theoretical presentation combining principles of quantum mechanics and kinetic energy with semiconductors.
thanks .. it was great
This is amazing! Thanks so much for uploading thanks thanks thanks thanks!!!!!!
Really really well done explanations. Wish you guys had a full budget to increase the production values, but still just a great resource. Thanks for sharing it.
awesome video...very clear explanation....thanks to their efforts
excellent and lucid description of a complex idea.
This video really help me understand how solar cells work to generate electricity from photons of sunlight. Thank you so much! Best video on the subject I’ve seen thus far!
Simple and clear explanation, thanks for uploading this video!
amazing video. right from atomic level to the working of solar panels :)
Simple way of explaining. Thumbs Up!!!
I have mind to share and to make a chance to see this video together with our members in the next week. This treats very fundamental information to understand.
Thanx for this video; it is simple, easy to follow and gives the whole basic picture. I was looking for something like this.
Thank you so much for the video, really helped me out!
I think his is the best explanation that exist! Thank you very much
Great video. Good job. Thank you.
Good animation started at 17:07, well expalined the nature of PN junction met with Solar sun lights
this video explain what really silicon used for... thanks for explaining this much ...
very interesting knowledge thanks
Anand M.Sahay
very very informative with a very smooth corelation of all concepts....great work...thanks a lot
nice & nice video.
superb explanation helped me a lot
Thanks for clarifying points..!!
Nicely done and informative.
Now I think I can make my own from scratch
PEACE!
great vid you have here
This video has greatly helped to understand Diodes and Transistors with other semi-metals added on, one behaving as P (Positively Charged) and the other as N (Negatively Charged). The fact that the Sun Heat excites electrons depending upon the wave length it explains another phenomena not mentioned like is Resonance Energy.
very good , thanks
Bless your knowledge !!
Most excellent.
Excellent! Thanks!
it's the best explanation i've ever seen...however i think i should download it soon. I don't get everything yet and I think I should replay it for a few times. Who's too generous to discuss or explain this to me further? :)
good.It's very nice.
Nice...very clear. Can you do one for CIGS now please!!! ;-)
where do you work at now?
Wonderful, thanks!!!
You have to look at the material before the junction is formed! look at the video at about 15:40, there she explains that in n-type material there are free roaming electrons, because the phosphorus has one electron too much for binding them all. So in n-type there's a lot of free electrons, which means it has free negative charges. (it is true though, that at that point the crystal is still neutral, but actually, if you look at the whole junction, it is neutral as well)
many thanks
Useful tech.
Interesting!
And where precisely is such a system in operation commerically or experimentally? Where is the research being done?
Thanks a lot! :D
Should be a required H.S. course.
Awesome
@lavpatel39 The Answer is not an easy one! But the biggest problem with solar cell is their efficiency. Which means only part of the energy received from the sun can be converted to electricity. The efficiency so far achieved in the market is around 18%. An improved efficiency means one can generate the same amount of power on a reduced area, the area is related with production cost of the solar cell and associated mounting structure.
how calculate energies spectra of silicon (analogous to Rydberg constant for Hydrogen)?
good
i would have got higher grade in chemistry if videos like this existed back then :(
+Ray T We talking about a physical problem!
thanks for the info its precious b/c i got a shit ton of work for college lol
oh yeah also wouldn't the solar cell be limited to capturing energy only from a few narrow bands of light? what about the rest of the energy? why not use a prism to create a rainbow, and then shine the different colors of light on other elements in the same p-n configuration? is that even possible
AAAHHHH CRAZY EYES! SHE IS EATING MY SOUL
Silicon works but there are cheaper materials! It has to be a semiconductor. Sand is also mainly silicon.
Sand is mostly silicon dioxide...a very poor conductor.
I love it if things last long enough. !
Clear explanation, thank you. But why does the lady stare at me like that? HaHaHa
14:50: p n junctions
18:50: Construction
Very interesting but she has a very creepy stare
Why can't professors ever explain things so simply like in this video?
I think you can see some good advices on Avasva solutions.
thought ultra violet is more intense than normal light ? hence it has a higher frequency and carry's more energy ? just saying....
The project like this step by step is described on the Avasva website and many more plans you can find on that website.
seriously why is it that we cannot get a high definition video when it come to education stuff but we can get the good 720p to 1080p in some of the stupid random stuff ?
if cap locks is equivalent to yelling,
its funny to imagine you yelling the above statement.
I dont think the video is right anout the number of electrons in the 3 shell. I think the 3. shelle can hold up to 18 e- and the 4. shell can hold up to 32 e-...
I like the structure of this video but I really think you need to change the term 'orbit' it gets kids thinking like planetary orbits. I suppose if a nobel laureate thinks thats acceptable.....maybe I shouldn't be too worried.
I'm Vietnamese, I wish my country have its, I'm understand it's diving operation.
if that woman is from NSW I think we may be related amazing what you can find on TH-cam.
or not Woods is a comon surname xD
Not sure hwy there are 32 Thumb down ......seems these guys didn't understand the concept
yu think maybe @ Stone Henge they used sound to vibrate into light to use that big supposed amplifier..haha maybe? lulz just a thought.. =P
👍
The power of the sun, the source of the best renewable energy..
dunno, but after all this time, she is still freaking me out. I think I will continue to be freaked out by this lady till the end of time.
Or till the aliens come, in 2012 ;)
Trying to become rich from inventions is how you end any possibility of becoming rich (your own greed is used against you to defeat you) because you are very small attacking a very rich established powerful biz, who own the patent department so as to be the first to know of new threats to there establishments,The only way to win is to give new ideas away for free earn credibility then right a book about how you came up with idea!!!
2 people do not like clean, renewable energy...
I believe we are energy that feeds the sun then the sun feeds us . We think of the Universe would universe exist without are thought Yes but No.
You need to make some changes. Check Avasva Solutions if you want to make it right.
man how you people figure this stuff out on your own?.. I'm going to reinvent the solar cell and capture 100% suns energy using fractal dome lens technology... you guys use flat surface, but due to the angle of incidence when the sun is low in the sky the power absorbtion goes down. Also light comes from all directions at once.. you gotta catch it all simulteneuously.
the narrator lady is freaking me out big time. watch her body language and face expression.....
there is obviously something horribly wrong with her, but then i have met a lot of female physics teachers with similar problems.
Either that, or she's never been in front of a camera before and is terrified, but trying to fake it. Don't try to hide fear people, you can't.
I DON'T UNDERSTAND ANYTHING
do not buy solar panels until you see this eyeopening video. google "mike Lewis diy solar"
this lady is scary as hell
is that a hicky on her neck?
maybe she is an alien hehehe
Solar panels only work in hot sunny environments. They do not get hot enough in the winter time to make energy.
you are so wrong, it hurts
Miguel Contreras I agree. I was very ignorant when I commented. However, wind and solar are utter failures at producing cheap, plentiful, reliable energy that life and progress require. The reasons have been well-understood for decades. Because sunlight and wind are low-density energy, they require vast land and material resources to capture. And worse, because sunlight and wind are unreliable energy, they always need a backup, which is almost always fossil fuel.
+Operation Pravda you are wrong again sir, please stop.
hehe