International students returning to 90

According to the classification of "average, good, and excellent" cooking skills, Lin Yi's cooking skills are "edible".

What level is he, doesn't he have a clue?

Of course there are, but this does not prevent him from showing his "advantages" to his favorite spouse in 360 degrees without any dead ends like a male peacock with its tail open.

"Is it delicious?" Cooking skills are not a problem, what matters is the heart, especially for Professor Zhuang, a kind-hearted young man with five lectures and four good views who is extremely upright in his three views.

Hee hee hee hee hee hee.

Lin Yi has enough self-knowledge, he didn't challenge any difficult tasks like noodles or dumplings, so he fried the toast bought in the supermarket in a pan, and served it with a half-cooked fried egg.

This fried egg is one of Lin Yi's special skills. The egg yolk is too old and tasteless, and the egg yolk is too raw and has a fishy smell. The half-baked egg is the most test of skills. After one bite, the golden liquid will slowly flow out, staining the entire spit. Secretary, I can't guarantee the taste, but the color in the color and fragrance is still very attractive.

"Well, it's delicious." Zhuang Cheng lowered his head, his voice was calm without any fluctuation, and he was very adaptable. He was gradually able to face Lin Yi's fierce pursuit without changing his expression.

Of course, the face is the face, whether he is as calm as he shows, that's up to the two of them.

Zhuang Cheng took a bite, and a trace of egg yolk leaked from the corner of his mouth.

"Zhuangcheng." Lin Yi said suddenly, with a smile on his face.

Zhuang Cheng raised his head in doubt, and saw Lin Yi's hand stretched out from the other side of the table, just reaching the corner of his mouth. The not-so-soft touch was like an electric shock, which almost stopped his heartbeat.

"There's something at the corner of his mouth." Lin Yi innocently showed the egg yolk on his fingertips. He wanted to learn how to put the egg yolk in his mouth to taste it, but he was afraid that he would not learn how to report the craziness of the CEO. He was so cool and domineering that Professor Zhuang had already kicked him out of the house in a fit of embarrassment.

So, he wiped his finger on the paper towel solemnly, and said sincerely: "If you promise me, I will make you breakfast every day!"

For Lin Yi, who sleeps first in the laboratory and sleeps second, this is already a great promise, but obviously, Professor Zhuang does not care about this great promise.

"No need." After Zhuang Cheng finished eating, he wiped the corners of his mouth with a tissue, "You don't have to get up and help me make breakfast in the future, I can do it myself."

Lin Yi discovered an unpleasant fact. Perhaps his offense was too violent. Zhuang Cheng seemed to have developed an antibody to his 24-hour non-stop confession. Professor Zhuang, who used to blush after a few provocative words, has now followed suit. wind away.

but……

after? "Okay, then I won't do it in the future." Lin Yi immediately followed suit.

Zhuang Cheng immediately realized the slur in his words, and pursed his lips, "Your dormitory should be able to move out today, if you need help, you can call me anytime."

"Oh, I remembered. Today is the project launch day. I, the project leader, have to get to the laboratory early. Zhuangcheng, you eat slowly, and there is still milk in the kitchen." Lin Yi ran into the room quickly after speaking, and changed his clothes It only took 5 minutes to get out.

Because of the "Solar Cell Project", the expansion of the new energy center is imminent. After discussion by the leadership of Simpson Laboratory, the open space behind the laboratory, which is the temporary experimental site for the superconducting cable experiment, was approved to the new energy. center.

The open space is about half the size of the Simpson Laboratory building. Once the new energy center is completed, it will surpass the Ministry of Aeronautics and Astronautics and the Ford Center in terms of floor area, and become the real No. [-] in Simpson Laboratory.

"All here?" Lin Yi scanned the entire laboratory.

All six researchers arrived, headed by Professor Green. To Lin Yi's surprise, Researcher Matthew participated in the project as an assistant researcher of Professor Green.

The researchers were divided into groups, and the division of labor was very clear.

The researchers in the Simpson laboratory did not conduct in-depth research on solar cells, but the materials research direction of the six professors Lin Yi named and participated in were all biased towards chemistry. As long as someone helped them point out the direction, it would not be difficult to get started.

"Lin, I have learned about the current research situation of solar cells. The photoelectric conversion efficiency of solar silicon cells used in the aerospace field has exceeded 25%, and the conversion efficiency of semiconductor liquid junction solar cells with Si, GaAs and WS as the main materials has also increased. More than 15%. But the absorption of light and the transport of carriers in these cells are simultaneous, and in order to prevent electron-hole recombination, the materials used must be of high purity and free of structural defects. This makes The cost of the battery is terribly high, and there is serious photocorrosion, the cost is high and the battery will be damaged quickly, even if the photoelectric conversion efficiency is high, there is no market value at all."

Lin Yi nodded, "That's right, when it comes to research in the field of solar energy, Professor Grtzel from Germany is undoubtedly No. 1 in the world. His dye-sensitized cell design is very ingenious. Flow, that is to say, after the photosensitization of the anode, electrons are injected into the nano-Tio2 conduction band, while holes remain on the dye on the surface, which achieves the purpose of limiting the recombination of charges, and greatly requires the purity of the material. Reduced."

"Although the photoelectric conversion efficiency of this dye-sensitized cell is not as good as that of monocrystalline solar cells, its development space and market value far exceed them. This is also the main research focus and direction of the energy materials research laboratory."

Lin Yi's project feasibility report has been sent to the researchers after signing the laboratory confidentiality agreement yesterday. Many researchers present are not in a good state of mind. They have thick dark circles, and their upper and lower eyelids seem to be fighting at any time. It was this project feasibility report that was to blame.

Scientific researchers are like this. They never fight uncertain battles, and they don't know how to go to the battlefield.

Lin Yi's feasibility report was originally intended for scholars like Simpson who major in materials science but are not proficient in the field of solar cells. The words and descriptions are just right.

When a group of researchers took it in their hands, their eyeballs stuck to it and couldn't be pulled off. It's okay to say that if you don't understand, you can't be a qualified scientific researcher if you don't study it if you understand it.

So the six researchers present did not close their eyes at all last night. Even so, they just understood it.It's like watching an opera. After understanding the content of the opera, but asking them how the opera is sung, it would be too embarrassing for the audience.

"The photoelectric conversion efficiency of dye-sensitized cells has reached 10-11%, but they are mostly used in official public institutions. Ordinary households have no market competitiveness at all. The most important reason is safety issues."

"Professor Grtzel's dye-sensitized battery uses a liquid electrolyte, and I have carefully studied the electrolyte material he used, which contains volatile organic solvents, which are not only very detrimental to the long-term stability of the battery, but also to the device. The packaging has extremely high requirements, and the difficulty of large-scale assembly and production is also very high."

"As I mentioned in my report, there are no more than five manufacturers in the world that are capable of assembling and producing dye-sensitized batteries. The supply is less than demand, the seller's market, and the disadvantages of the product itself. The result is conceivable."

"So, as I mentioned in the project feasibility report, it is an inevitable trend to replace the solid state with the liquid state. There are already detailed theoretical explanations and demonstrations of the all-solid-state dye-sensitized battery in the report, which is why Professor Simpson is willing to strongly support this project. The reason for this sub-project, but the theory is the theory, what materials to use and how to use the cheapest materials to obtain the highest photoelectric conversion effect require everyone to work together."

The six researchers nodded one after another.

"I wanted to repeat Professor Grtzel's fabrication of liquid photosensitive fuel cells yesterday, although I didn't succeed, but..."

The professional scientific researchers got into the state very quickly. Seven of them, including Lin Yi, talked about their thoughts on solid-state dye-sensitized batteries.

The pen in the assistant researcher's hand was flying fast.

Matthew has not worked as an assistant researcher for a long time, and he is really not very skilled in business, so he has to glance at the notes of the juniors next to him from time to time.

Of course, several assistant researchers obediently shared their notes with Matthew, and some were even happy to help Matthew write their notes.

Yesterday, after Matthew was unceremoniously deprived of the opportunity to participate in the project by his mentor, he didn't feel anything at all.Although Professor Simpson attaches great importance to this project, as a young researcher in his early forties, he does not think that Lin Yi has the ability to lead the laboratory out of the predicament.

Because after a long-term scientific research career, he deeply understands that many things really need to be accumulated slowly over time. For example, when he is carrying out many projects, he still feels powerless, and in his opinion, it is very difficult Questions, often a sentence or two of the old man can make him suddenly clear up.

It is only half a year for a young researcher in his twenties to solve problems that neither Simpson nor Professor Logan can solve.This is almost impossible to do.

Matthew admitted that the project plan mentioned by Lin Yi at the time was more than 80.00% feasible, and he already had a rough idea of ​​the design of solid-state dye-sensitized batteries. Maybe give him three or four years to develop all-solid-state mesoscopic solar energy. Batteries can really be born at the Simpson Laboratory New Energy Center.

But half a year, impossible.Therefore, although he regretted not being able to participate in this revolutionary energy project, he would not surrender himself to strive for opportunities as an assistant researcher.

Until the evening, Professor Green really had a conscience and called his students over to explain the project proposal to him.

"Matthew, you are right. Half a year, this project may not be able to produce results, but have you carefully looked at the design of Linyi's all-solid-state mesoscopic solar cell? This is completely different from the inherent solar cell in our concept."

"Look, here, and here. Do you see anything?" Green stared at his favorite student with burning eyes.

Matthew was engrossed and watched with a serious expression for about 15 minutes, his expression changed from serious to solemn, and then from solemn to surprised.

He took a blank piece of paper from the coffee table, wrote and drew on it, then Matthew slowly raised his head, looked at the teacher with an expectant face, and said solemnly: "No."

The author has something to say: There is a data error in the previous article, that is, the photoelectric conversion efficiency in 97 was less than 0.7%, which is the conversion efficiency of the solid-state photosensitive dye battery.At that time, I found that the efficiency of the solid-state photosensitive dye battery that appeared after 98 was 0.74%, so I wrote that it was less than 97% before 0.7, but there was no solid-state photosensitive dye battery in [-]:) It has been changed.