I Have a Research Support System

On Sunday, because Xu Qiu was too busy the past few days, he was a little tired, so he took a rest for a while, and slept until one o'clock in the afternoon before getting up.

At about 1:50, Wei Xingsi called Xu Qiu and asked Xu Qiu to find him when he arrived, mainly to revise and deliver the Joule article.

For this Joule work, Chen Wanqing was mainly responsible for the experimental characterization, the experimental idea was provided by Xu Qiu, and he was also responsible for writing the article.

The process of Xu Qiu's explosive liver synthesis experiment this week is also the process of explosive liver articles.

Although the grade of Joule is not low, Xu Qiu has already had the experience of submitting a manuscript once. This time, he is very familiar with writing, and now the article has basically been written.

This work is mainly based on full solution method, translucent, colorful, large-scale, and flexible components, and integrates almost all the problems in the future commercialization process in the field of organic photovoltaics.

There may be only one concept of environmentally friendly solvents and non-halogenated solvents.

This is also a small direction that Xu Qiu intends to do next, to replace 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, which is convenient for solution processing and device preparation.

In general, Xu Qiu's current scientific research plan is to hit high efficiency as the main business, and by the way, publish some work related to the future commercialization process of organic photovoltaics, so as to attract the attention and follow-up of colleagues, and lead the entire field toward develop in these directions.

After all, one person's power is limited after all. In today's era, if the industry in the field of cutting-edge technology wants to develop, it must integrate the power of a large number of people in order to be able to progress.

There is only so much that 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, that is other people's business.

In addition, there is no news about the article in Natural Energy, which means that there is a high probability that it will be sent back to the reviewers for re-review, but it is not known whether a second revision is needed.

In fact, it is quite normal. The few articles that Xu Qiu saw before in the major sub-journals of Nature in the field of organic photovoltaics took three months or even more than four months from the time the article was submitted to the time when the article was accepted.

In particular, the two names Xu Qiu and Wei Xingsi are unfamiliar names in the major sub-journals of Nature.

By the time Xu Qiu arrived at Caiyi 216 after lunch, it was already past two o'clock in the afternoon, and all the lab partners had already arrived.

Tian Qing sat on the desk seat, looked at Xu Qiu with a little surprise, and said hello: Good morning.

Morning... Xu Qiu explained. Sister Tian Qing, I worked overtime on Saturday.

Tian Qing let out an Oh and suddenly lost interest. She thought that Xu Qiu had also joined the Salted Fish Party like her, but she didn't expect that to be the case.

Xu Qiu didn't talk to Tian Qing anymore, nor was he in a hurry to find Wei Xingsi to deal with the Joule article. Instead, he entered the inner laboratory first, found Mo Wenlin who was doing experiments, and planned to arrange work for her. Devices with Y-series acceptor materials.

However, before Xu Qiu could speak, Mo Wenlin smiled and said, The efficiency of a batch of laminated devices I made on Friday reached a maximum of 14.02%, officially breaking through 14%!

Hey, 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 memorable.

Mo Wenlin turned her head to look at Xu Qiu: You seem very surprised.

This is trust in your ability, Xu Qiu casually found a reason, and then said: By the way, I need your help to make a few batches of devices later.

What device? Mo Wenlin asked, Is it a new idea about a stacked 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 kinds, namely Y1, Y2, Y3 and Y4. Xu Qiu responded.

According to the previous naming, these materials should have been called Y3-Y6, but after Xu Qiu thought about it, he felt that it was not good to start directly from Y3. People would ask you about Y1 and Y2, so he decided to use the original Y1 and Y2. Y2 is directly erased.

That is to say, the current Y1-Y4 correspond to the original Y3-Y6 respectively.

Among them, the best system is Y3, which matches J4, and the device efficiency in the simulation laboratory is as high as 14.8%.

Although the original Y1 and Y2 contributed a lot, their names will not be listed in the credit book in the future.

As for the original Y7-Y11, Xu Qiu is not going to take them out for the time being. After all, they are the product of the failure of improvement. Now his main energy is still going to focus on the breakthrough of efficiency.

In fact, it is also because the team is short of manpower. If the organic photovoltaic team has enough people, like the original Y1, Y2, Y7-Y11, these scraps can also be transferred to other people, enough to feed one or two people. It is very easy to come out with one or two AM articles, plus a few articles such as JMCA and CM.

Okay, let me try it for you. What donor material are you going to use? Mo Wenlin nodded in response, and added: It just so happens that I am going to make a batch of ternary system devices today, which can be put together for evaporation. plating.

Let's use J4, which has the best performance at present... After finishing speaking, Xu Qiu suddenly paused, and a flash of light flashed in his mind, muttering: The ternary system... have you tried to use the ternary system before? Have you ever been in a stacked device?

I haven't used it before. Mo Wenlin shook her head, reacted, and said, You mean...plan to try to use the ternary system in stacking?

Yes, this may be a good method. Xu Qiu expressed it while deducing it in his mind: For example...we can construct such a ternary system, including a donor material and a fullerene Derivative acceptor PCBM, plus a non-fullerene acceptor, such as IT-4F, IDIC-4F, is used in bottom cells.

In this way, the light absorption performance of the bottom cell can be directly changed by adjusting the ratio of the two acceptor materials, thereby changing the current density of the bottom cell. At the same time, it can simultaneously control the light transmitted through the bottom cell to the top cell, and regulate the light absorption of the top cell. The current density, and finally realize the current matching of the bottom battery and the top battery. Perhaps this is easier to regulate than the original two stacked devices of the binary system...

Mo Wenlin nodded as if realizing something: It sounds like a good idea, then I'll give it a try next week.

Well, then you should be busy first, you have worked hard. Xu Qiu returned to the desk, the more he thought about it, the more he felt that this idea was good.

Previously, two binary systems were used to prepare stacked 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 the current, it also makes 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 lose a lot. 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 optimize the proportion 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 value corresponding to the best device performance. state.

Thinking of this, Xu Qiu also overturned his long-standing cognition of the ternary system.

Before, he believed that the materials used in the ternary system developed by researchers were all existing materials, and it was difficult to compare with the binary system in terms of efficiency.

It now appears that the previous judgment was a bit arbitrary.

Some jobs seem to be watery, but they just haven't found their application for the time being. Flexibility is actually a great advantage of the ternary system.

If the ternary system had been beaten to death with a stick at the beginning, it is estimated that Xu Qiu would not necessarily have thought of this idea now.

He hurriedly used the idea of ​​combining the ternary system with stacked devices in the simulation laboratory for exploration.

It is theoretically feasible, but whether it works in practice still needs to be tested by actual operation.

After arranging work for Mo Wenlin, Xu Qiu turned on the computer, checked the text of the Joule draft, and then went to 218 with a USB flash drive.

Here we come. Wei Xingsi didn't ask Xu Qiu why he was late today, but went straight to the point: The article on Joule is finished.

It's finished. Xu Qiu handed over the USB flash drive and explained: This week I synthesized four Y-series receptor materials, each with a yield of about one gram, and now I am asking Mo Wenlin to help make the device.

... You've worked hard, you've worked hard! Wei Xingsi raised his eyebrows and understood Xu Qiu's hint.

He was born in the synthesis of organic photovoltaic materials, and he also saw the synthesis route designed by Xu Qiu at the group meeting. He didn't know the difficulty of synthesizing four materials in one week. First, he had to conduct high-intensity synthesis experiments. There cannot be any experiment failure, luck and strength are indispensable.

Normally, it would take two weeks of work to synthesize these four materials, but under such a high-intensity experiment, Xu Qiu actually wrote the Joule article, which made him admire.

Wei Xingsi couldn't help but think of himself when he was young, when he went abroad to study for further study, and he was almost in the same state as Xu Qiu is now, devoting himself to scientific research, wishing to use one minute as two minutes, there are 48 hours in a day.

Of course, the specific circumstances of the two are different. At that time, the reason why Wei Xingsi worked so hard was due to the PUSH factor of the research group supervisor, the factor of his own interest in scientific research, and the reason of being alone in a foreign country. In the underdeveloped era, when a person entered a research group abroad, he had no entertainment other than doing experiments.

In the domestic scientific research circle, those who wear the Qingqian hat and return to China are relatively seldom come back lying down, most of them are former liver emperors, and they more or less have something in their hands.

Because they have gone abroad, they have no contacts or resources abroad, and if they want to be successful and stay abroad for a long time, they must have real skills, and they must be better than the locals who were born and bred.

No matter where in this world, if you want to break through the restrictions of class, you will be involved.

In the final analysis, resources are limited, and if I get them, you will be gone. Then who will get the resources in the end, we can only rely on competition to PK.

However, when society develops to a certain level, people will find that the efforts of most bottom-level people are very cost-effective, or even meaningless.

When people realize this, they may stop rolling.

Assume that there are three people, A, B, and C, who are divided into 4 units of resources. The one who works the hardest gets 2 resources, and the other two people get 1 resource.

At the beginning, the effort level of A is 2, recorded as 2 labor, B and C are 1 labor, A gets 2 resources, B and C get 1 resource, everyone pays 1 labor, harvests 1 resource, and the return ratio of labor is equal to 100%.

Now one day, it suddenly rolls up, and B also wants to get 2 resources, so what should I do?

He works hard and implements the 3 labor strategy. A and C remain unchanged, and they are still 2 labor and 1 labor. As a result, the labor paid by A, B, and C is 2, 3, and 1 respectively, and the resources harvested are 1, 2, and 1. , The return ratio of labor is 50%, 66.6%, 100%, overflowing from excess labor.

A sees it, I am not convinced, B you 3, right, then I 4.

As a result, labor further overflows, and the return ratio is reduced to 50%, 33.3%, and 100%.

Afterwards, B went straight to 5 labor, and then died suddenly.

In the end, only A was left, and he won.

As for C, C is 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 roll around, and in the end, everyone fights to break the blood. It turns out that no one is the winner, or just like raising Gu, there is only one. One survived, others were swept to death.

This is one of the reasons why a large number of people at the bottom of Europe and beautiful countries chose to give up their upward breakthrough and settle down in the present, because they understand that there is no way out for introversion, so it is better to be a salted fish.

Of course, there is a premise for them to do so.

That is, their countries have entered the ranks of developed countries, and they 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 own citizens.

This is currently not possible in China, so many people have realized the problem of introversion, and they have to go to 996 to burn their youth, in order to gain a better future.

Moreover, in the current process of national development, there are indeed opportunities for some industries to make the cake bigger, and it is worth fighting for.

However, if the comprehensive strength of the country is further enhanced, for example, in the not-too-distant future, florists will also become developed countries through some means.

Applying the general model of Western countries, the population has been reduced to hundreds of millions, most of the cake has been controlled by minority groups, the road to break through the class is almost blocked, 996 is eliminated, and the hard-working middle class works 955 per day, most people can only Earn 5000-6000 pieces (based on purchasing power in 2016).

And people who lie down and don’t work every day can receive 4,000 yuan of subsistence allowances per month (based on purchasing power in 2016), and there are subsidies for having more children, and they don’t have to worry about housing and medical problems. The only price is that they can’t go abroad, High consumption, in this case, many people may choose to be comfortable.

Xu Qiu and Wei Xingsi revised the Joule article together for a long time, and finally corrected the article at night and submitted it.

After submitting the article, Wei Xingsi moved his body a bit and said, I'm going to do a big health care later, Xu Qiu, do you want to come together?

I won't go. Hearing Teacher Wei asking him to come along, Xu Qiu resolutely refused. Since everyone called him to come along, it was probably normal.

Who will go to regular health care? Of course, as a good young man in society, we can't go to informal health care.

Okay, you can go back to rest early if you have nothing to do. Wei Xingsi nodded, locked the door of 218, and then left through Caiyi's back door.

When Xu Qiu returned to Room 216, he saw Mo Wenlin in the evaporation glove box surrounded by many people, including two undergraduates and Han Jiaying.

The school girl was the first to notice Xu Qiu's arrival, waved to him and said, Brother, the device performance of the Y series receptors has made a breakthrough!

Yeah, another 14%! Mo Wenlin answered, and her excited speech was a little incoherent: The highest efficiency of the J4:Y3 system is 14.53%! This is a binary single knot, and the efficiency has also exceeded 14% .”

14.5%?! It's so high, it's real. Xu Qiu cooperated with the performance, mainly because he saw the appearance of the crowd, and felt that this breakthrough was a little too fast, and he might take the original Y1 and Y2 first. The transition will be smoother when you come out.

But now that the materials have been synthesized, there is no room for repentance. Don't ask, it's just a brainstorm. What, you suspect that I cheated, do you have evidence?

Mo Wenlin didn't know the messy thoughts in Xu Qiu's mind, so she directly retrieved the test data and showed it to Xu Qiu: It's true, I tested more than a dozen data points repeatedly, and there are 70% efficiency data All fall above 14%.

Okay, wait for you to sort out the data and draw the J-V curve. We will surprise Teacher Wei at the group meeting tomorrow.

After Xu Qiu finished speaking, he looked at Yin Houlang and Xu Xinjie who were watching with wide-eyed eyes, and nodded to them.

The experience of the two new undergraduates is still too little, like the old people in the laboratory, such as Wu Feifei and Chen Wanqing, they are already very calm about this situation.

Their inner drama is more or less like this:

What, you made a breakthrough, is it your own work?

No, Xu Qiu asked me to do it.

Oh, that's all right.

Returning to the desk, Xu Qiu made some calculations, and the two key tasks currently in hand are on the right track.

In reality, the highest efficiency of the system based on the Y series receptor is 14.5%, and that of the stacked device is 14.0%, and the layer of film that is 15% away is almost about to be punctured.

It's a pity that I, no, it's Mo Wenlin, who is a little short.

take it easy.