Hand rubbing nuclear fusion live in the wilderness

Chapter 294 Key Technologies of Solar Power Panels

The preparation and coating of the 'light absorbing layer' is the most important step in the 'LaGaSi thin-film solar thin-film power generation panel'.

Experts from various countries who watched the live broadcast to learn technology knew it, and Han Yuan naturally knew it, so he left this step alone for a new day, so that Huaguo could make preparations.

It was another early morning when the live broadcast was on as usual. After washing and various cleaning and protection work, Won entered the dust-free studio.

The translucent shooting ball followed him, clearly recording every movement and process.

After taking out the materials that were prepared yesterday, Han Yuan pulled the camera and said:
"The key to the preparation of 'lanthanum gallium silicon thin-film solar thin-film power generation panels' is to form a nano-lattice structure similar to the wings of the 'red bead swallowtail' on the light-absorbing layer."

"The gallium lanthanide alloy is the most suitable metal ion to form this lattice structure."

"The light-absorbing layer is a thin film from the perspective of the overall structure of the power generation panel."

"But in fact, this one-layer thin film structure is made of a three-layer complex structure of buffer layer, absorber layer, and P electric layer."

"The first step is to prepare the gallium lanthanide alloy first, and then use the prepared gallium lanthanide alloy to prepare an ion solution."

"However, I have already completed this step a few days ago. This bottle of pale kumquat solution on the laboratory table is it."

As he spoke, Han Yuan carefully picked up the lanthanum gallium silicate ion solution in a triangular transparent polyester container on the laboratory table and showed it to the audience.

Although there is only a small bottle of gallium lanthanum silicate ion solution on display, the total amount may be less than two liters.

However, the concentration of the solution is very high, which belongs to the supersaturated level of the solution.It's just that the conditions for precipitation and crystallization have not been reached.

If this bottle of solution is used for preparation, it can coat substrates with an area of ​​more than ten square meters.

The reason why it is stored in a polyester plastic container is that the configured gallium lanthanum silicate ion solution will react with glass, monocrystalline silicon, polycrystalline silicon and other silicon-structured containers, thereby destroying the purity of the gallium lanthanum silicate ion solution. Spend.

So it can only be preserved with non-silicon materials.

[What a beautiful color, a touch of golden orange. 】

[This should be the most critical thing in the whole set of technologies. 】

[It feels like a piece of gold and jade, it is indeed very beautiful. 】

[I will offer 10 yuan a bottle!If it is not enough, I will add more, and if it is enough, I will pretend that I have not said it. 】

【Pretty?Why do I feel that this thing is made by the streamer after holding back for three days without drinking water? 】

【? ? ? ? ? ? 】

[Upstairs you are poisonous! 】

[Lying in a trough, I can no longer look directly at this thing. 】

[It looks sweet, is it from a diabetic?In other words, the anchor has diabetes! 】

【I'm afraid it's from a uremia patient (_)】

[Upstairs, how do you know that the urine of diabetic patients is sweet?Have you tried it? 】

On the virtual screen, countless bullet screens flashed across. At the beginning, everyone discussed it quite seriously, but after a while, the style of painting was completely crooked.
Han Yuan glanced at the barrage, a little speechless.

What is this discussion about.

Shaking his head, ignoring the group of sand sculpture netizens, he began to process the materials on the experimental table while explaining the preparation information of the light-absorbing layer.

Lanthanum gallium silicate ion solution is indeed the most important raw material in the preparation of 'lanthanum gallium silicon thin film solar thin film power generation board'.

But not the most important technology.

The most important technology is how to plate the gallium lanthanide ions in the lanthanum gallium silicate ion solution onto the substrate, and stably form a nanocrystalline structure with a special structure.

This step of technology is the most important.

As for the nanocrystalline structure of the coating layer, ionic water is used as a solvent, and then a gallium lanthanum silicate ion solution is prepared according to a certain ratio.

Then immerse the prepared substrate as a whole in the prepared ionic solution, and raise the temperature while introducing a current of a certain voltage.

In this way, the macromolecular gallium lanthanum silicate metal ions in the ionic solution will attach to the substrate.

But this is just attachment, and no special crystalline structure is formed.

In order for it to form a crystalline structure later, annealing, replating, and water baths must be performed at different temperatures and pressures.

The overall steps are extremely cumbersome, and it is necessary to always pay attention to external conditions such as temperature and air pressure during the reaction process.

After all, chemical reactions are the most complex of all reactions, and also the most mutational.

Once there is an error in conditions such as temperature and air pressure, the results obtained may vary by hundreds of thousands of miles.

In addition, there is another difficulty that it is necessary to etch the P electrical layer halfway while processing the light absorbing layer.

This step is the worst part.

Because there is no fixed time node for etching the P layer.

When dealing with special crystalline structures, some substrates may have reached the standard after one process.

But there are other substrates that may go through three, four, or even five or six processes, but they may not necessarily meet the standard.

Therefore, in the process of processing, each substrate needs to be optically inspected after each process is completed.

After confirming the formation of a special crystalline structure, it is necessary to separate it for the next step.

For substrates without a special crystalline structure, repeated treatments are required until the special crystalline structure is formed on the surface.

The number of processing passes required is variable.

Some unlucky ones may not necessarily be able to form a special crystal structure after a dozen treatments.

On the virtual screen, some experts sent barrages to ask questions.

Does it mean that keeping the substrate in the ionic solution and repeatedly treating it can ensure the formation of a special crystal structure?

In this regard, South Korean Won can only shake his head and express that this method is not feasible.

Because the special crystalline structure on the substrate can only exert its maximum effect when there are one or two layers.

So this is also the reason why the concentration of gallium lanthanum silicate ion solution must be diluted to a certain extent with ionic water during processing.

If the concentration of the lanthanum gallium silicate ion solution is too high, a special crystal structure with more than three layers will be rapidly and stably formed on the substrate.

It will cause the photoelectric conversion rate of the whole 'lanthanum gallium silicon thin film solar thin film power generation panel' to drop.

And the decline is high.

For each additional layer, the photoelectric conversion rate can decrease by approximately 5.00%.

These things are the technological accumulation of a civilization.

Just like Edison invented the light bulb, it took thousands of material substitutions before finally finding the right one.

Chemical vapor deposition can be more demanding than the search for lamp materials, because there are more factors that need to be controlled during the vapor deposition process.

The determination of each factor condition is finally determined by countless experiments.

Therefore, even if it is a higher level of civilization, there is no guarantee that a more suitable and better process can be found.

The entire process of attachment, annealing, replating, and water bath has been completed twice, and the first substrate that meets the requirements is successfully prepared.

By the time the first substrate was processed, more than two days had passed.

The finished substrate has been plated with GaSilicon Lanthanide film and has been optically inspected.

It is confirmed that the special crystalline structure inside has been formed, and the rest is to make a window layer and a protective layer on the film.

The window layer is a layer of transparent conductive oxide layer or nano-carbon material layer, which has a certain resistance capacity.

At the same time, it is also the N surface of the PN junction, which plays the role of flowing electrons.

The protective layer does not need to be introduced, it naturally plays a role of internal protection.

There is no limit to the materials used, there are all kinds and everything.

The only requirement is to have a very high light transmittance.

Compared with the difficulty of the light-absorbing layer, the processing of these two layers can be said to be reduced countless times.

In fact, the core of the whole 'LaGaSi thin film solar power generation panel' lies in the light absorbing layer, and the core of the light absorbing layer lies in the special crystal lattice formed by using the 'LGaSi ion solution'.

Although the lanthanum gallium silicon ion itself is colored, the color is not too strong in the case of only one or two layers.

Therefore, the originally thin layer of transparent substrate is only slightly brown at the moment.

If you don't look carefully, you may not even be able to see it.

On the surface, this transparent substrate is quite different from the thin film on ordinary solar panels.

This aroused the interest of the audience in the live broadcast room.

[Which lanthanum gallium silicon thin film is this?Why is it this color? 】

[Aren't the colors of solar power generation films all black? 】

【color?There is no color anymore, isn't it still transparent? 】

[Yes, but you have to look very carefully to see a trace of color. 】

[Speaking of which the color is so light, can it really gather and absorb sunlight effectively? 】

[Black is the color that absorbs the most heat. 】

[If it is really as perverted as the anchor said, this power generation board should be enough for my home. It shouldn’t be a problem to generate a kilowatt-hour of electricity every hour, right? 】

【one time?Don't you underestimate the anchor, start at ten degrees!There is no ceiling! 】

The substrate with almost no visible color aroused the curiosity of the audience in the live broadcast room, and they discussed it in the live broadcast room.

Ordinary solar panels are nothing out of the ordinary.

But generally speaking, whether it is solar cells or solar power generation films that you have seen, the color is black or dark.

After all, only black or dark colors can absorb sunlight and heat more effectively.

It was the first time for everyone in the live broadcast room to see this kind of highly transparent power generation panel with only a hint of light brown.

Even experts from various countries are the same.

There are many doubts about this highly transparent power generation panel.

The higher the transparency, the worse the light-gathering and light-absorbing and heat-absorbing properties are for sure.

Therefore, experts from various countries immediately thought that either the preparation process had not been completed, or that the special crystalline structure could produce special effects.

They did not doubt the ability of this power generation panel.

After all, the anchor has never joked about this kind of thing.

Seeing these barrages questioning the photoelectric conversion rate and photothermal absorption rate of transparent power generation panels, Han Yuan smiled confidently and explained:

"This is the biggest difference between 'lanthanum gallium silicon thin film solar thin film power generation panels' and other silicon solar power generation panels."

"Ordinary solar panels absorb light and heat to the greatest extent, so the color of the film is generally black and dark."

"Unlike the 'lanthanum gallium silicon thin film solar thin film power generation panel', it does not need dark colors to maximize the absorption of light and heat."

"Because the special crystalline structure in the light-absorbing layer can replace this effect and make more effective use of light energy."

"And this crystalline structure can also refract and reflect light to the second, third, and fourth layers of the film below, thereby improving the utilization rate of light energy."

"The special crystalline structure borrowed from the wings of the 'Red Pearl Swallowtail' is the technical basis of this solar power generation panel."

"Okay, now that the first solar power generation panel has been prepared, no matter how much I say, it's better to experiment to find out the truth. Whether it can generate electricity or not, I will experiment and show you later."

After dealing with the remaining window layer and protective layer, Han Yuan brought the fully prepared solar power panel to the chemical laboratory.

Since it was agreed to experiment, it is natural to finish the rest.

After all, this is just a solar panel, and the rest of the battery connection device and the like have not been made yet.

These things are easy to deal with, without installing them on the aircraft, you only need to simply solder and connect them and connect them to a rechargeable battery.

However, since it is an experiment, it is natural that various test ammeters can best reflect the current change.

In the test site, South Korea fixed the prepared solar power panels facing the sun in mid-air.

It is around four o'clock in the afternoon, the sun is not as strong as noon, but it is enough for the 'lanthanum gallium silicon thin film solar thin film power generation panels'.

When a meter is connected to the line, the pointer on it starts to jump slightly.

This shows that the solar power generation panel has already started to perform photoelectric conversion, but it has only just begun to receive light. The photoelectric conversion rate is not high, and the current flowing through the current test meter is not strong.

There is actually a slight difference between "LaGaSi thin-film solar thin-film power generation panels" and ordinary silicon solar cell power generation in this respect.

Ordinary silicon solar panels, when the sun shines on the photodiode, the photodiode will convert the sun's light energy into electrical energy and generate current.

And "LaGaSi thin-film solar thin-film power generation panels" need to be buffered and scattered by a special crystal lattice when sunlight hits the power generation panels, and then can be absorbed by the bottom layer and converted into electrons flowing out through the PN layer.

As the saying goes, it starts a little slower.

But this slowness is only relatively speaking. For humans, it is only two or three seconds.

Under the watchful eyes of countless viewers in the live broadcast room, the pointer that was still beating slightly a second ago quickly jumped nearly 150 degrees with an exaggerated range.

It jumped almost directly from the zero scale to the end.

[Fuck me, it can really generate electricity! 】

[It moved, it moved! 】

[Amazing, anchor, it really is the number one live broadcast room! 】

[Good guy, will the anchor never run out of battery again? 】

[Is this an ammeter or a voltmeter?Is there any knowledgeable explanation?I can't understand it, I just know it's beating. 】

[If you don’t want the eyes upstairs, you can donate them. The word “current test” is written in such a large size on the watch. 】

[The reading is 15A, that is to say, the current intensity passing through the current test meter is 15A. 】

[Is that high or low? 】

[The level depends on the impedance and voltage. I guess the voltage is not very strong, but the impedance is not necessarily so. You have to ask the anchor. 】

(End of this chapter)