I Have a Research Support System

Monday, group meeting.

Wu Feifei began to write a review proposal for two-dimensional perovskite, the target journal AM.

Duan Yun changed the format of the manuscript that was rejected by ACSAMI and transferred it to RSC Adv. At the same time, he and Wu Feifei handed over the work in the field of thermoelectricity.

Although it was a work handover, it actually opened up a new research direction, and then Duan Yun and Wu Feifei studied together.

If Duan Yun can write the article before he graduates, then the article will be his. Otherwise, it will be handed over to Wu Feifei for further research, and the first work of the article will also belong to Wu Feifei.

The direction was chosen by Duan Yun. In order to save trouble, he chose a research project that was not too innovative, which was "preparation of thermoelectric devices with cobalt nanowires doped with PVDF".

Because I have used silver nanowires and nickel nanowires doped with PVDF before, and published two articles, so now unless the performance of the prepared device is very good, at most I will publish an article at the ACSAMI level. A three-region RSC Adv.

Tian Qing has sorted out the work of "Research on Charge Transport of Two-dimensional Perovskite Standard Sample System" last week, and according to Wei Xingsi's wish, contributed to Adv. Let’s look at the direction of future research.”

This is of course a more euphemistic way of saying it. To put it bluntly, it is "the next research direction is my hen, why don't you arrange one for me, Mr. Wei, and I will consider it?"

In fact, Tian Qing was also a little afraid that Wei Xingsi would arrange for her something like "synthesis of perovskite quantum dots", she really didn't want to do the synthesis.

However, her theoretical research is quite special, and it is difficult to make a car behind closed doors. She must rely on an existing system for research, and she has already studied several standard sample systems of perovskite, so there will be no research for a while. thinking.

Wei Xingsi nodded and didn't say another word, it was a tacit agreement.

Sun Wo began to report: "Next, I plan to study tin-based two-dimensional perovskite photovoltaic devices..."

"Two-dimensional plus Xiji, can it be done well?" Wei Xingsi seemed to ask himself and replied: "Anyway, let's do it first."

Xu Qiu could hear the entanglement in Teacher Wei's words.

On the one hand, Mr. Wei can understand that the current two-dimensional perovskite system is under great competition pressure, and there is nothing wrong with Sun Wo or Wu Feifei finding a new way to choose a subdivided unpopular field;

On the other hand, the unpopular subdivision field of perovskite here is different from the unpopular subdivision field of organic photovoltaic ternary blend system, or the unpopular subdivision field of ternary conjugated donor materials. The former is unpopular because it is difficult to produce results, and the latter is Because of the lack of novelty.

In other words, the performance of the organic ternary system is guaranteed by the binary system, and it will not be worse. Although the perovskite tin-based and two-dimensional strategies have respectively solved the "lead toxicity" and "environmental instability However, both of them will cause a decrease in performance, and the difference will be superimposed. The performance result is likely to be unsatisfactory, and the efficiency may not even break 1%.

Of course, if the final result is good, for example, the efficiency data of tin-based two-dimensional perovskite materials are 12% and 15%. According to the current popularity of the perovskite field, there is a chance to publish an article on CNS, but this idea Just think about it, even if you can, it's basically not Sun Wo's turn.

Chen Wanqing continued to organize the two systems of IEICO-4F and IEICO-4Cl.

She is not in a hurry. Anyway, both systems lack data on light sources. At least they will have to wait until September to finish testing the light sources before they can vote.

At the same time, she will now set aside an hour every day to organize her doctoral thesis.

Wei Xingsi is not as strict as before with Chen Wanqing and Duan Yun, two PhD students who are about to graduate.

After all, the number of articles of both of them has reached the standard, as long as they hand over the work well, there is no need to get stuck.

Moreover, it is common for students to be better than their tutors in the future. Maintaining the relationship between teachers and students is a proper network. The relationship between teachers and students in the scientific research circle, as long as the students and teachers are not in a deadlock, That's all pretty solid.

Because the circle is so small, if a student betrays the teacher, when other people cooperate with them, they will consider whether they will be betrayed in the future.

Even if there are various reasons behind it, other onlookers can't be fully aware of it, they will only make judgments according to normal thinking, and label this student a "bad character".

Of course, having said that, this is all based on the fact that both teachers and students are in the scientific research circle, and the gap between the two is not too big. If one person is dazzling enough, many shortcomings will be covered up.

Xu Qiu began to report: "Last week, the exciton binding energy tests of ITIC and IDIC were carried out. The principle is..."

"Among them, the exciton binding energies of ITIC and IDIC are 117 and 112 millielectronvolts, respectively..."

"Further fitting results show that, under normal temperature and normal working conditions of solar cell devices, more than 80% or even 90% of excitons will spontaneously split into free electrons/holes..."

"This result is consistent with the previous Han Jiaying H43:IT-4F system. I personally speculate that it is the general performance of ITIC type non-fullerene materials..."

Last week Wei Xingsi was busy pitching Tian Qing, Han Jiaying and Duan Yun's articles, so Xu Qiu didn't tell him the result in advance.

Therefore, Teacher Wei was a little surprised after seeing this result. After thinking for a while, he said: "This conclusion is very important. If we can dig deeper into the mechanism, we can find more non-fullerene systems and traditional fullerenes. The difference in the system may impact a big article...Xu Qiu, do you have any other ideas?"

"Yes." Xu Qiu operated the laser pointer, turned the PPT page of the report, and continued to talk:

"In addition, Mo Wenlin and I found that unlike the ITIC system, the device performance of the IDIC system is not sensitive to film thickness and device size. I guess it is due to the difference in the diffusion distance of the excitons, so I plan to further test the ITIC system with the HOPG method. , IDIC exciton diffusion distance, but the ITIC system has just been tested, and the data has not been processed yet.”

Now Xu Qiu has a very high authority in the research group, and he does not need to report to Wei Xingsi when purchasing instruments, materials, and medicines with a unit price of less than 2,000 yuan, so Teacher Wei does not know about this, otherwise he has done HOPG before. Seeing that Xu Qiu bought HOPG, it must be directly related to the test of the exciton diffusion distance that he intends to do.

"Coincidentally," Wei Xingsi said with great interest: "Exciton diffusion distance, I have done this before in the beautiful country, using HOPG, by the way, how did you test it?"

Xu Qiu briefly explained: "First stick the surface of HOPG with adhesive tape to get a fresh and smooth substrate, and then..."

"Well, the method is correct. Hurry up and fit the results." Wei Xingsi nodded, then fell into deep thought, and said after a while: "Tian Qing, didn't you say that there is no research direction for the time being? How about helping Xu Qiu, such as testing the exciton binding energy and exciton diffusion distance of other non-fullerene acceptor materials?"

Xu Qiu murmured in his heart: "That's Tian Qing, I feel like I can't bear it...but it's definitely impossible to refuse."

Tian Qing thought for a moment, nodded and said, "I'm fine."

Last week, liquid nitrogen was used for the first time in the Handan campus. Tian Qing also saw liquid nitrogen for the first time, and was very interested in it. Not too dangerous.

For her, there is not much difference whether it is organic or perovskite, as long as it does not engage in dangerous experimental operations, it is acceptable.

"That's fine. I fell into a misunderstanding before, and I have always planned you to go to the perovskite side." Wei Xingsi said with a smile:

"Actually, the organic non-fullerene system can also be studied with CEILV, TOF, or even field effect transistor FET. When you first came here, I remember that I taught you the research method of the P3HT system. Now it is the same for other systems. akin."

Seeing that Tian Qing had no objection, Wei Xingsi turned to look at Xu Qiu.

Xu Qiu also nodded in response, indicating that there is no problem on his side.

Tian Qing can be considered as a non-staff member for the time being. Xu Qiu thinks that she can't command her, and he is not willing to force others to work against their wishes.

After all, it is almost impossible for the middle class to break through the boundaries. Before birth, there is a chance to reincarnate. After birth, if you want to break through the barriers, there are about one and only two ways, marrying into a wealthy family, or cheating all the way... …

Similar to winning 500W and 1000W lottery tickets, it can be regarded as a one-time opening, which is not enough to achieve the sublimation of the level. Generally, this kind of people are called upstarts. Unless they win big prizes every day, they can be called "opening all the way". Of course This kind of hang-up is too obvious, and it is estimated that he will be invited to drink tea or something in a short time.

Of course, this situation is precisely the choice made by human civilization itself. From the feudal society, or even the earlier civilization era, to the present, the country's operating mechanism has not changed much.

When the productivity has not reached its peak and the material is not extremely rich, abandoning this model is death, which will inevitably lead to chaos.

Of course, specific to different times, different countries, the social situation will be different.

In the first case, hundreds of years ago, there was a feudal imperial society.

The minimum living standard of the general public is 1, and even the most basic food, clothing, housing and transportation cannot be guaranteed, and many people will starve to death or freeze to death;

The living standard of the middle part is 1-100. Work hard to keep yourself from starving to death or freezing to death. At this time, the middle class still wants to work hard, because if you don’t work hard, you will die;

The living standard of the upper part is 100-10000, and you will not starve to death, but life is just like that. The upper limit is far less than that of modern society. For example, the life of the emperor in ancient times is nothing more than that in the eyes of many people now. Xu Qiu I feel that in a world without Internet and happy water in fat houses, it is better to be a salted fish in modern times.

The second situation is now.

Because of the rapid development of productivity brought about by the three industrial revolutions, the minimum living standard of the general public has reached 100. For example, the subsistence allowances for driving a BMW in similar news reports are generally relatively clean, but the strength of this guarantee is not strong, and it is limited to guaranteeing basic survival;

The living standard of the middle part is 100-10000, but the vast majority of people are in the range of 100-1000, and the gap cannot be widened. If you work hard, you may be able to break the small barrier of 1000 and reach more than 1000 (quite more than 2 or 3W per month), but if you want to get 10,000 (for example, with real power, annual salary of several million, etc.), there may be one in a million people;

The upper part is 10,000-10,000,000, the productivity is constantly developing, the world is generally peaceful, and there is no reallocation of resources. According to the Matthew Effect, the gap between the top and the bottom will naturally widen, that is, the gap between the rich and the poor will only increase. The bigger it is, it can be expressed in a very simple fact, that is, no matter what kind of tax it is, it is ultimately aimed at the middle class.

In the third case, regardless of ideological issues, for beautiful countries and developed countries in Europe, they rely on financial and other means to make profits, which also makes their entire society in a state of high welfare.

The minimum living standard of the general public is 500, most of the middle is 1000-10000, and the upper part is also 10000-10000000.

Because of the high social welfare, the middle level starts at 1,000. If you work hard, you can only reach 2,000 or 3,000, and you can reach 10,000 if you work hard.

But what about 10,000? You can't go any further.

This is also the reason why Europeans generally compare Buddhism. For example, Germany has 365 days a year, with an average vacation of 150 days.

Anyway, working four days a week is enough to maintain a high-quality life, and the rest of the time is good for traveling, playing games, and "playing games".

There are also many people who choose extreme sports and other sports, which is also jokingly called "the reason why there are so few foreigners".

From the perspective of national development, this is understandable, and it is essentially the result of the joint efforts of these generations.