I Have a Research Support System

Xu Qiu simply classified the documents he got from Wei Xingsi, handed over the perovskite and thermoelectric fields to Wu Feifei, and kept the organic photovoltaic field for himself.

In the past, the number of documents in the field of perovskite was almost two or three times that of the field of organic photovoltaics. Now, with the increase in the popularity of organic photovoltaics, the number of documents in the field of perovskite is almost the same as that in the field of organic photovoltaics.

In addition, documents such as organic field effect transistors, perovskite quantum dots, and fullerene-based all-small-molecule organic photovoltaics are related to the research content of the group, but not very relevant, and Wei Xingsi will download them .

But this kind of literature does not need to be read carefully, as long as you have a general understanding, and then put the literature in the designated filing cabinet, mainly to broaden your horizons, maybe you will come up with some ideas.

For example, the structure of Wu Feifei's organic spacer layer of thiopheneethylamine referred to the molecular structure of organic photovoltaics.

After the classification was completed, Xu Qiu casually flipped through what his colleagues were doing recently.

Before formally reading the literature, Xu Qiu likes to sort the articles according to the influence of the journals from large to small, and then read them in order.

The most influential ones must be the main journal of CNS and the major sub-journal of Nature.

Of course, it is difficult to publish articles of these two levels in the field of organic photovoltaics, so Wei Xingsi will make a separate phone call to inform Xu Qiu to check the literature for such articles.

Wei Xingsi didn’t specify anything when he gave documents like this, which means that there are no articles of this level in this batch of documents.

The periodicals that Xu Qiu usually read mainly focused on the articles in the first and second districts.

He will take a serious look at the top-ranked articles in the first district, and pay more attention to the weaker ones. As for the articles in the second district, he will mainly look at the pictures, molecular structures, and then glance at the abstract conclusions. There is nothing interesting The place is skipped directly.

There are more than ten organic photovoltaic literatures this time, including two articles at the top journal level in the first district.

The first one was published on JACS, and the work is quite interesting.

Xu Zhenghong's research group developed a wide bandgap polymer donor material PDCBT. The molecular structure is very similar to that of traditional P3HT. The main chain is all thiophene units. Combined with ITIC, the obtained binary system has an efficiency of more than 10%.

Their work, with a device efficiency of 10%, a new structure, a detailed synthesis route, and the concept of P3HT, plus a large group of halos, was finally published on JACS, which is also normal.

P3HT is formed by direct hand-in-hand polymerization of several 3-hexylthiophenes at positions 2 and 5. Because 3-hexylthiophene is a D unit, P3HT is an oligomer that is oligomerized by D units. According to the existing theory, the P3HT molecule There is no A unit in it, and there is no D/A push-pull effect, resulting in low photoelectric performance.

In the PDCBT molecule, Xu Zhenghong and others modified the alkyl side chain of a thiophene to an ester side chain. The ester side chain has the ability to pull electrons, so the thiophene unit substituted by the ester group becomes an A unit.

Then, two such A units and two D units composed of ordinary thiophene are polymerized to obtain a P3HT-like D-A copolymer connected by ...DDADDAA....

As for why ...DDADDAA... instead of the usual ...DADADA... structure, Xu Qiu was very curious and wanted to know, but after reading the article, he couldn't find the answer.

If Xu Qiu were the reviewer, he would definitely raise this question.

It's a pity that he is not, and he is too lazy to send an email to ask about this small problem.

In fact, Xu Qiu had already guessed the possible situation in his heart.

That is Xu Zhenghong and his team originally planned to develop a P3HT-like donor material to adapt to the IDTBR system developed in their group.

As a result, it was found that this material was generally compatible with IDTBR, and the performance of the device was only 6% or 7%.

At this time, they just saw Xu Qiu's ITIC article published, so they got some ITIC through some channel, took it and tried it with the PDCBT material that was just hot, and found that the performance of the device was not bad, reaching more than 10%, so Just sort out an article directly.

Otherwise, Xu Zhenghong's article should not be published so soon. Xu Qiu's ITIC material article has only been published for two months. Moreover, Xu Zhenghong and his colleagues developed adaptations for their peers' ITIC materials without using their own IDTBR system. Donor materials, this cannot be justified.

Of course, for the field of materials, the motivation is not important, but the result is important.

If you can find a material with various physical properties far superior to graphene, even if you say you came up with it all at once and named it Substance X, as long as it can be confirmed and repeated by others, post several articles in a row The main issue of Nature is not a big problem, and even directly nominated for the Nobel Prize, it is not difficult to win the next year.

The scientific research circle is so simple and straightforward. If there are any disruptive results, you can do it if you can.

Xu Qiu also imagined that the system would be able to see through his disguise, give him some black technology, and directly let the Blue Star civilization jump directly to a second- and third-level civilization.

It's a pity that what I have in my hand is the scientific research auxiliary system, and I can only rely on my own efforts step by step to continuously improve my ability. In the early stage, even the points had to be deducted to save money, but now it is much better, and I can use my full firepower To explore the ideas in your head.

Another top magazine in the first district was published on AM, and Gong Yuanjiang also started a new job.

They developed another new small molecule donor material, and then combined with IT-4F acceptor material, once again broke the world record of the whole small molecule system, reaching 11.2%.

The full text has only one bright spot of high efficiency, and of course this is enough.

There will be a chain reaction in the field of scientific research. Once a breakthrough is made in one place, it can be quickly expanded to other similar fields.

And because of Gong Yuanjiang's in-depth cooperation with Wei Xingsi's group, he got the materials that other groups couldn't get in advance, so he could eat more cakes.

This is also the case in this world, where key advances are made by a single elite individual.

Most people are mediocre, paddling, or acting as a background board, or doing repetitive labor that doesn't make much sense.

Although everyone is talking about innovation, everyone understands the difficulty of innovation.

It would be nice to make a slight change on the original basis and improve it. Most of them are under the slogan of innovation, but the more innovative they are, the worse their performance will be.

Of course, everything has two sides.

Although investing resources in mediocrity will cause a certain degree of waste, it can guarantee continuous output of elites.

After all, the mediocrity and the elite are not static, maybe one day a mediocre will be transformed into an elite.

After reading the articles of the top journals in the first district, Xu Qiu began to browse the articles of the weaker districts, that is, the articles of JMCA, CM, and Adv. Sci.

The first few papers did not yield much, and they were not very relevant to the field that Xu Qiu was working on.

For example, there are foreigners who still insist on the P3HT:PCBM system ten years ago.

Speaking of this, domestic researchers have a characteristic, that is, they like to chase hot spots. Wherever it is hot and where it is easy to post articles, they like to swarm over and form a group.

For small research groups, this phenomenon is particularly obvious, just as the field of perovskite has just become popular, and domestic perovskite groups have sprung up like mushrooms after rain.

However, some research groups in foreign countries like to deeply cultivate a field, and they have not changed their direction for more than ten or decades.

If we only look at the scientific research itself, it will definitely be easier to achieve breakthroughs if we don’t easily change directions in the long run.

But it is also easy to imagine that in the process of making a breakthrough, you may face the dilemma of being unable to produce results for a long time.

For example, there have been no major achievements for five consecutive years, and no decent SCI articles can be published. What should I do at this time?

If such a professor is placed in the country, it will basically be cold. Students will not take the initiative to find you when they see that you have no results, and they will not be able to recruit good students. The country sees that you have no results, and the Natural Science Foundation will not give you. If there is no approval, there will be no scientific research funding, and your peers may not ridicule you, but they will definitely treat you as a marginal figure and ignore you.

There is no funding, no students, and no SCI academic achievements. If you signed a non-promotion position at the beginning, the school department may directly let you go. If it is a formal establishment, it may reduce your resources in other places. , such as reducing the area of ​​the laboratory, like this Jiangwan move, if you have no money and no articles, you can only get a guaranteed laboratory, a 40-70 square meter laboratory.

In foreign countries, such as Nihonguo and Meiguo, professors are tenured, which is more secure for professors. Even if there is no result, basic support is still in place, at least allowing you to continue your current research.

Of course, this lifelong system does have many disadvantages, such as cutting off the upward channels of young people.

However, objectively, it also allows those who have obtained tenure-track positions to do research with peace of mind, without having to think about all kinds of messy things they will face if they cannot produce results for a while.

Like the Neon Country next door, before 2001, there were only 9 Nobel Prize winners. In order to change the status quo, they launched the Basic Science and Technology Plan, and said that this plan will allow the Neon Country to get 30 Nobel Prize winners within 50 years. a Nobel Prize.

Then in the next few years, the neon country won an average of one Nobel Prize a year, and won more than a dozen Nobel Prizes in more than ten years...

This situation is caused by many factors, but the tenure-track teaching position allows them not to easily change research directions, not to blindly chase hot spots, and to grasp one aspect to explore, which is definitely a very critical factor.

Perhaps this is also a major reason why China has begun to deepen the reform of the scientific research circle. The existing system does have serious drawbacks.

Xu Qiu continued to read the documents.

At this time, his eyes suddenly brightened, and he saw a JMCA article that someone actually developed a material called ITIC2.

PS: Happy Valentine’s Day, everyone. If you are single, I wish you get out of singles as soon as possible. If you are not single... well, you probably don’t have time to read novels.