Chapter 446: We will give Teacher Wei a surprise at the group meeting tomorrow

On Sunday, Xu Qiu was too busy the other day and was a little tired, so he rested for a while, and only got up at one o'clock in the afternoon.
At about 1.50, Wei Xingsi called Xu Qiu and said that Xu Qiu would go to him when he arrived, mainly to modify and deliver the "Joule" article.
For the work of "Joule", Chen Wanqing was mainly responsible for the experimental characterization. The experimental ideas were provided by Xu Qiu, and he was also responsible for writing the article.
The process of Xu Qiu's liver synthesis experiment this week is also the process of liver explosion articles.
Although the grade of "Joule" is not low, Xu Qiu has already had one submission experience. This time he wrote it with ease, and now the article has basically been written.
This work is mainly based on "full solution method, translucent, colorful, large size, flexible parts, and integrates almost all the problems in the commercialization process of the organic photovoltaic field in the future.
May be only an environmentally friendly solvent, non-halogenated solvent concept.
This is also a small direction Xu Qiu intends to do next, to replace the traditional chloroform and chlorobenzene solvents with relatively low-toxic solvents such as tetrahydrofuran.
He already has a general synthesis idea, which is to modify the molecular structure of organic photovoltaic materials, such as introducing side chains such as alkoxy groups, to improve their solubility in non-halogen solvents, and to facilitate solution processing and device preparation.
In general, Xu Qiu’s current scientific research plan is focused on impacting high efficiency. Incidentally, he published some work related to the future commercialization of organic photovoltaics to attract the attention and follow-up of colleagues and lead the entire field to move forward. Development in these directions.
After all, a person's power is ultimately limited. In today's era, the frontier technology industry must integrate the power of a large number of people to make progress.
There are only so many things Xu Qiu can do for this industry at this stage.
As a pioneer, he has done what he should do, and he has a clear conscience.
As for whether others choose to follow him or not follow him, that is other people's business.
In addition, there is no news about the "Nature·Energy" article so far, indicating that there is a high probability that it will be sent back to the reviewer for re-review, but I don't know if it needs to be revised again.
In fact, it is also normal. The several major publications of Nature that Xu Qiu saw before in the field of organic photovoltaics took three or even four months from the submission of the article to the acceptance of the article.
In particular, the names Xu Qiu and Wei Xingsi are unfamiliar names on the journal of Nature.
By the time Xu Qiu finished lunch and arrived at Caiyi 216, it was already more than two o'clock in the afternoon, and the little friends in the laboratory had already arrived.
Tian Qing sat at the desk seat, glanced at Xu Qiu with a little surprise, and said hello: "Morning."
"Morning..." Xu Qiu explained. "Sister Tian Qing, I worked overtime on Saturday."
Tian Qing said "Oh", suddenly lacking interest. She thought Xu Qiu had also joined the "Salted Fish Party" like her, but she didn't expect it to be otherwise.
Xu Qiu did not talk to Tian Qing again, nor was he in a hurry to find Wei Xingsi to deal with the "Joule" article. Instead, he first entered the inner laboratory and found Mo Wenlin who was doing experiments. She planned to arrange work for her. Y series acceptor material device.
However, before Xu Qiu could speak, Mo Wenlin smiled and proactively said, "The efficiency of a batch of laminated devices I made on Friday has reached the highest level, officially breaking through 14%!"
"Oh, not bad!" Xu Qiu exclaimed. This is an expected result. In his current simulation laboratory, the efficiency of stacked devices has reached 14.5%.
However, in reality, this is the first time that the device efficiency in the field of organic photovoltaics has exceeded 14%, which is indeed worth commemorating.
Mo Wenlin turned to look at Xu Qiu: "You don't seem to be surprised."
"This is the trust in your ability," Xu Qiu casually found a reason, and then said: "Yes, I need your help to make several batches of devices later."
"What device?" Mo Wenlin asked, "Is it a new idea about a laminated device, or a new material you synthesized this week?"
"It's a new material, Y series receptors. Last week I developed a total of four types, namely Y1, Y2, Y3 and Y4." Xu Qiu responded.
According to the previous naming, these materials should have been called Y3-Y6, but Xu Qiu thought about it later and felt that it’s not good to start directly from Y3. Others will ask about your Y1 and Y2, so they decided to combine the original Y1 and Y2. Y2 is erased directly.
In other words, the current Y1-Y4 correspond to the original Y3-Y6 respectively.
Among them, the current best system is Y3, which matches with J4, and the device efficiency in the simulation laboratory is as high as 14.8%.
Although the original Y1 and Y2 have contributed a lot, they will not have their names in the future credit.
As for the original Y7-Y11, Xu Qiu is not ready to take it out for the time being. After all, it is the product of the failure of "improvement". Now his main energy is still going to be on the breakthrough of efficiency.
In fact, it is also because the team is short of manpower. If the organic photovoltaic team has enough manpower, like the original Y1, Y2, Y7-Y11, these leftovers can also be passed on to other people, enough to make one or two people full. It is very easy to come out one or two AM articles and add a few articles like JMCA and CM.
"Okay, let me try it for you. What kind of donor material do you plan to use." Mo Wenlin nodded, and added: "It just happens that I am going to make a batch of ternary system components today, which can be put together for steaming. plating."
"Use the J4 with the best performance at present..." After speaking, Xu Qiu paused suddenly, and a bright light flashed in his mind, muttering: "The ternary system... You have tried to use the ternary system before. Have you ever been among stacked devices?"
"I haven't used it." Mo Wenlin shook her head, reacted, and said: "You mean... you plan to try to use the ternary system in the stack?"
"Yes, this may be a good method." Xu Qiu deduced it on the spot in his mind while expressing it: "For example...we can build a ternary system like this, which includes a donor material and a fullerene. The derivative acceptor PCBM, plus a non-fullerene acceptor, such as IT-4F, IDIC-4F, will be used in the bottom cell."
"In this way, it is possible to directly change the light absorption performance of the bottom cell by adjusting the ratio of the two acceptor materials, thereby changing the current density of the bottom cell, and simultaneously controlling the light transmitted through the bottom cell to the top cell and regulating the top cell's The current density will ultimately achieve the current matching between the bottom cell and the top cell. Perhaps this is easier to control than the original two-element stacked device..."
Karen Mok nodded, seemingly enlightened: "It sounds like a good idea, then I'll try it next week."
"Well, then you should be busy. You have worked hard." Xu Qiu returned to his desk, and the more he thought about it, the more he felt that this idea was good.
Previously, two binary systems were used to prepare laminated devices, usually by changing the effective layer thickness to control the current density of the bottom cell and the top cell.
Although this method is effective in regulating current, it will also make the performance of the device in a non-optimal state.
For example, for a certain effective layer, a film thickness of about 100 nanometers is the best state, but for current matching, it has to be made to a film thickness of 175 nanometers.
Although the current is preserved in this way, the efficiency will definitely be lost. For example, the original efficiency of 12% may be only 10% now.
The introduction of the ternary system can provide an additional optimization possibility, directly optimizing the ratio of the material inside the effective layer, without changing the film thickness, so that the film thickness of the effective layer can always be at the level corresponding to the best device performance. State.
Thinking of this, Xu Qiu also subverted his cognition of the ternary system.
Previously, he believed that the materials used in the ternary system developed by researchers are all existing materials, and the efficiency is hard to compare with the binary system. It is all about water.
It now appears that the previous judgment was somewhat arbitrary.
Some jobs seem watery, but in fact they just haven't found their applications for the time being. "Flexibility" is actually a big advantage of the ternary system.
If the ternary system had been beaten to death with one stick, it is estimated that Xu Qiu would not necessarily think of this idea now.
He hurriedly applied the idea of ​​"combining ternary system with laminated devices" in the simulation laboratory for exploration.
It is theoretically feasible, but the specific upward direction is not feasible, and it still needs to be verified by actual operation.
After arranging work for Mo Wenlin, Xu Qiu turned on the computer, checked the text of the draft of "Joule", and then went to 218 with the USB flash drive.
"Come here." Wei Xingsi didn't ask Xu Qiu why he was "late" today, but went straight to the subject: "The "Joule" article is finished."
"It's done." Xu Qiu handed over the U disk and explained: "This week I synthesized four Y series receptor materials, each with a yield of about one gram. Now I am asking Mo Wenlin to help make the device."
"...Thanks, hard work!" Wei Xingsi raised an eyebrow and understood Xu Qiu's suggestion.
He has a background in the synthesis of organic photovoltaic materials, and he also saw the synthesis route designed by Xu Qiu at the group meeting. I don’t know how difficult it is to synthesize four materials in a week. No experiment can fail, luck and strength are indispensable.
Normally speaking, it takes two weeks to synthesize these four materials. Under such high-intensity experiments, Xu Qiu actually wrote the "Joule" article, which he had to admire.
Wei Xing couldn't help thinking of himself when he was young. At that time, he went to study abroad, which was almost the same as Xu Qiu's current state. He devoted himself to scientific research, wishing to use one minute as two minutes, and there were 48 hours a day.
Of course, the specific environments of the two are different. At that time, Wei Xingsi worked so hard because of the PUSH factor of the tutor of the research group, the factor of his own interest in scientific research, and the reason why he was alone in a foreign country. On that Internet In the underdeveloped era, a person entered the research group abroad, and there were no other entertainment projects except for experiments.
In the domestic scientific research circle, those who wear the "Qingqian" hat return to China, and seldom come back from lying down.
Because they have no contacts or resources abroad, they must have real abilities and must be better than the natives if they want to get ahead and stay abroad for long-term work.
No matter where you are in this world, if you want to break through the limits of class, you are all rolled up.
In the final analysis, resources are limited. Once I get it, you will be gone. Who will get the resources in the end? I can only rely on competition.
However, when society develops to a certain level, people will find that the efforts of most people at the bottom are very cost-effective, and it can even be said to be meaningless.
When people realize this, they may not curl up.
Suppose there are three people A, B, and C, which are divided into 4 units of resources. The one who works hardest gets 2 resources, and the other two people get 1 resource.
At the beginning, the effort level of A is 2, which is recorded as 2 labor, B and C are 1 labor, A takes 2 resources, and B and C take 1 resource. Everyone pays 1 labor and harvests 1 resource. The labor return ratio is both 100%.
Now one day, I suddenly rolled up, and B also wants to get 2 resources, what should I do?
He worked hard and implemented the 3 labor strategy. A and C remain unchanged, but 2 labor and 1 labor. As a result, the labor paid by A, B, and C are 2, 3, and 1, respectively, and the resources harvested are 1, 2, and 1. , The labor return ratio is 50%, 66.6%, 100%, and labor is overspilled.
A, I don’t accept it. B. You 3, right? Then I’m 4.
As a result, labor overflowed further, and the return ratio decreased to 50%, 33.3%, and 100%.
After that, B went to work directly, and then died suddenly.
In the end, only A was left, and he won.
As for C, C has been optimized (eliminated).
Under this model, the total amount of resources is constant, which means that the size of the cake is constant.
In other words, it is only meaningful to achieve scientific and technological progress, technological breakthroughs, and efforts to make the cake bigger.
For most industries, the size of the cake is fixed. When the amount of labor overflows, people are rolling around, and in the end everyone fights for a bloodbath. It turns out that no one is a winner, or just like raising Gu, there is only one. People survived, and everyone else was wounded to death.
This is why a large number of people at the bottom of Europe and beautiful countries have chosen to give up breaking through the strata, and one of the reasons why they are content with the present is that they understand that there is no way out for involution, so it is better to be a salted fish.
Of course, there is a premise for them to do so.
That is, their country has entered the ranks of developed countries, and can use financial means or technological monopoly to harvest leeks from underdeveloped countries in the world, so as to improve the social welfare of their citizens.
This is not yet possible in China, so many people realize the problem of involution, and they have to do it, burn their youth to 996, in order to win a good future.
Moreover, in the current process of national development, there are indeed opportunities for some industries to make the cake bigger, which is worth fighting for.
But if the domestic comprehensive strength is further enhanced, for example, in the near future, flower growers will also become developed countries through some means.
Applying the general model of Western countries, the population has been reduced to hundreds of millions of people. Most of the cakes have been controlled by minority groups. The road to break through the class has almost been blocked. 996 has been eliminated. The hard working middle class has 955 jobs every day. Earn 5000-6000 yuan (based on purchasing power in 2016).
Those who lie down and don’t work every day can receive 4,000 yuan per month (based on the purchasing power in 2016). There are subsidies for having more children, and there is no need to worry about housing or medical problems. The only price is that they can’t go abroad. High consumption, in this case, there may be many people choose to relax.
Xu Qiu and Wei Xingsi worked on the "Joule" article for a long time and finally corrected the article in the evening and voted it out.
After submitting the article, Wei Xingsi moved his body and said, "I'm going to do a big health care later, Xu Qiu, do you want to come together?"
"I won't go." Xu Qiu refused decisively when he heard Teacher Wei call him together. Since they all called him together, it was mostly formal.
Who will go for the formal health care? Of course, as a good young man in society, we can't go for informal major health care.
"Okay, you can go back to rest early." Wei Xingsi nodded, locked the door of 218, and then left through the back door of Caiyi.
When Xu Qiu returned to 216, he saw Mo Wenlin in the vapor deposition glove box, surrounded by many people, two undergraduates, and Han Jiaying.
The school girl first noticed Xu Qiu's arrival, and beckoned to him and said, "Brother, the device performance of Y series receptors has made a breakthrough!"
"Yes, another 14%!" Mo Wenlin answered, she was a little bit incoherent in her excitement: "The highest efficiency of the J4:Y3 system is a binary single knot, and the efficiency has exceeded 14%."
"14.5%?! Such a high, real or fake." Xu Qiu cooperated with the performance, mainly because he looked at the crowd. He felt that this breakthrough was a bit too fast, and he might take the original Y1 and Y2 first. The transition will be smoother.
But now that the materials have been synthesized, there is no room for repentance. Don't ask, ask is just a brainstorm. What, you suspect that I opened up, do you have any evidence?
Mo Wenlin didn’t know the messy thoughts in Xu Qiu’s mind. She directly retrieved the test data and showed it to Xu Qiu:
It’s true. I repeatedly tested more than a dozen data points, of which 70% of the data points are efficiency data. All fall above 14%."
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"Okay, wait for you to sort out the data and draw the J-V curve. We will give Teacher Wei a surprise at the group meeting tomorrow."
After Xu Qiu finished talking ~EbookFREE.me~, he looked at Yin Houlang and Xu Xinjie, who were watching with wide eyes, and nodded at them.
The two new undergraduates have too little experience, like the old people in the laboratory, such as Feifei Wu and Chen Wanqing, they are very calm about this situation.
Their inner drama is almost like this:
"What, you made a breakthrough, is it your own job?"
"No, Xu Qiu asked me to do it."
"Oh, that's all right."
Returning to the desk, Xu Qiu made a calculation, and the two key tasks currently on hand are on track.
In reality, the system efficiency based on Y-series receptors is the highest 14.5%, and the laminated device is 14.0%. The 15% distance from the film is almost punctured.
It's a pity myself, no, it's Mo Wenlin, a little bit short.
take it easy.