Solar Energy, Photovoltaic System, Solar Cell, Photoelectric Effect, What is it?
This video represent complexity of Solar Energy, Photovoltaic System, working principle of Solar Cell and Photoelectric Effect in a simple and understandable way.
From Solar energy through solar panel and solar cell towards home applications powering
www.chrvojeengineering.com/pos...
Solar Energy (00:08)
Solar energy is the most abundant permanent energy resource on earth and it is available for use in its direct (solar radiation) and indirect forms (wind, biomass, hydro, ocean etc.)
The sun emits energy at a rate of 380 sextilion kW every second
Photoelectric Effect (01:53)
When sun or light shines, it emits particles call photons, this photons are massless, and if photons hits one of the electrons, and if photon has enough energy, it can free the electron, as a matter fact it will knock it loose electron from outer orbit of silicon atom with some velocity and in some direction. This electron become negatively charged free electron called photon electron.
In electronic sheath of silicon atom a hole emerges, and whole atom of silicon become postively charged, because, after photon hits electron, in atom, we have 14 protons and 13 electrons, with simply math there is more protons who are positevly charged.
Solar Cell (04:59)
Solar cell is constructed from this parts N-layer, P-layer, Metallic conductors, Module encapsulate, glass cover, Back Sheet.
Role of Solar cell is to produce electric current from solar energy.
N-layer (06:21)
In a process called "doping", impurity atoms are placed in very pure silicon to change the electrical characteristics of the crystal. Phosphorus can replace some of the silicon atoms in the crystal and when this happens the phosphorus atom is called a dopant
atom.
P-layer (07:35)
Boron, with five protons and five electrons, can also substitute in a silicon crystal where
a silicon atom would normally reside. Because a boron atom has only three electrons
available in its bonding shell, only three covalent bonds can be formed between a boron
atom and the silicon atoms in a crystal.
P-N Junction (10:27)
P-N Junction or depletion region is made when N-layer and P-layer connect together, and when electrons try to fill holes in entire volume. Most Solar cells are large area of P-N junction
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Create: Hrvoje Čočić
Category: Education
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Пікірлер: 46
I’ve been looking for an explanation like this for the longest time. You sir, are a great contribution to physics
@chrvoje_engineering
Жыл бұрын
Thanks, that is nice feedback
Great
@chrvoje_engineering
Ай бұрын
Thanks
One of the best explanations on the physics of solar cells! Thank you!
@chrvoje_engineering
2 жыл бұрын
Thanks for nice feedback
Finally a video that is helping me understand the photo-electric effect and the manner in which the PV cell works. Thanks. Just wish the voice was less 'automated'.
@chrvoje_engineering
8 ай бұрын
Glad it helped!
It's absolutely imformative, excellent video presentation
wow, a real physics lesson from the Great Dr. Steven Hawkings
@chrvoje_engineering
5 жыл бұрын
Thanks, consider to support me on pateron:www.patreon.com/chrvojeengineering , or share on social media, thanks again
best explanation ever
@chrvoje_engineering
2 жыл бұрын
Thanks
Excellent
@chrvoje_engineering
5 жыл бұрын
Thanks, please watch, share rest of my videos
thanks a lot...
@chrvoje_engineering
5 жыл бұрын
Thanks please share, like and watch res of my videos
only thng I don´t understand is why the electrons when transfered back to the p junkcton do not fill the holes but wander upstairs again.
@stanisawsamoniuk4880
2 жыл бұрын
When you connect the p-layer and n-layer together electrons from n-layer are diffusing to p-layer and holes from p-layer to n-layer(10:44). So now, because electrons 'migrated', the n-layer has more protons than electrons and it becomes positively charged. Similarly, because those holes 'migrated' from the p-layer it has now less protons than electrons(more electrons than protons) and it becomes negatively charged. So when photons hit the electrons from p/n-junction, those electrons are naturally flowing to where the positive charge is(n-layer).
THE NARRATOR VOICE IS "UNBEARABLE" BUT THE CONTENT IS GEM
@chrvoje_engineering
3 жыл бұрын
Thanks for feedback
Fights between relations is due to negative hypnosis
Try some new solutions from Avasva solutions.
The narration on this video is unbearable. It seems to be done with a text-to-speech synthesizer. It sounds nasal, poor-quality, robotic, and it mispronounces important words (for example, it pronounces "Joules" as "Jowels" instead of "Jewels"). Argh!
@ducktective7520
5 жыл бұрын
Amber Kerr that isn’t the worst part of all this. It doesn’t flow and is grammatically incorrect in every other line.
how much intencity mean sunlight want
@chrvoje_engineering
5 жыл бұрын
I dont understund question
ur voice drives me mad but good explaination
@chrvoje_engineering
5 жыл бұрын
This is Robotic voice i next my video I will use natural voice so :)
Negative hypnosis on human effect
we want turkısh subtitles
@chrvoje_engineering
5 жыл бұрын
Can you make turkish subtitles? i will put, im not expert for turkish, HEHEHE
Photons are particlewaves and they are not massless
@chrvoje_engineering
6 жыл бұрын
photon has zero rest mass
@yaoooy
4 жыл бұрын
Light is transverse EM waves not particles. Energy of a photon is hf where f is frequency. Frequency is a property of waves and not of particles. Light EM waves behavior explains why electrons travel at 90 degrees with the incoming axis of the light wave because this is a property of transverse waves
Hypnosis you can't escape???????
@chrvoje_engineering
3 жыл бұрын
?
Beetwen... lol
When an educational video sounds like memenade i can't take it serious and do expect some humourus thing to punch me.
Why the weird robot voice 👎!?
@chrvoje_engineering
Жыл бұрын
I agree
👎👎👎👎👎👎👎👎👎👎👎👎😂👎😂😂😂😂😂👎