I Have a Research Support System

After arriving at the school, Xu Qiu went to the Jiangwan campus first.

Through the simulation laboratory comparison, he adjusted the Jiangwan evaporation equipment to the same state as the original Handan campus.

In this way, the processing conditions of the previous Handan campus can be directly used, which is convenient for future experiments.

At the same time, Xu Qiu noticed that the three-row spin coating-reagent storage-spin coating glove box had been spliced ​​together by the Modu Glove Box Company and placed in the 522 laboratory, probably thanks to Sun Wo.

However, the inside of the three-row glove box is still empty, and various instruments and reagents need to be transferred through the large transfer cabin in order to be able to use it normally.

After dealing with the glove box, Xu Qiu directly took subway line 10 from Xinjiang Wancheng to pick up Han Jiaying at Modu high-speed railway station.

The two of them made an appointment to return to school two days in advance, and then spend two days together.

High Speed ​​Rail Station.

The school girl is not like Xu Qiu, who can carry lightly. She only has a schoolbag. She is carrying a very large trolley case and a black leather schoolbag.

Because there were too many things, the two had no choice but to go back to the school dormitory to put down their things before coming out again.

They first went to the Bund for a stroll, had dinner, took a cruise, and then went to Sheshan Happy Valley and stayed in a hotel that had been booked in advance.

They are going to take advantage of the last day of vacation and have a good day of indulgence.

After all, we haven't seen each other for a month, Xiao Biesheng is a newlywed, although we often video chat, but it's just a video.

Inside the express hotel.

The two carried out a study on the impact of reciprocating exercise frequency and amplitude on the secretion of dopamine in the body and the peak time of dopamine.

In order to verify the reliability of the conclusion, they also conducted repeated experiments.

Doing this research is quite energy-intensive, and it is more tiring than making devices in the glove box in summer.

Not long after, Han Jiaying was exhausted.

Xu Qiu leaned over and whispered in the junior girl's ear: I'm your father.

The junior girl responded in a daze: Hmm...

Huh?! After a while, Han Jiaying came to her senses and slapped Xu Qiu lightly with her small fist: Senior brother, you, the bad guy...

The school girl probably felt hesitant to move, and moved her mouth, she opened her mouth and bit Xu Qiu's shoulder: Aww...

It's a pity that Xu Qiu didn't let her succeed, and quickly blocked her mouth.

Well……

The two began to repeat the experiment again.

Early the next morning, the two of them regained their energetic state. They are both young people, so they recovered relatively quickly.

After a simple breakfast, they went directly to Happy Valley.

The school girl is a senior undergraduate student, and can enjoy a 20% discount on ticket purchases, which is 160 soft girl coins.

And Xu Qiu is now a graduate student, and he is no longer a student on many occasions, so he can only buy the full ticket with tears in his eyes, which requires 200 soft sister coins.

There are very few people in Happy Valley today. After all, it is already the nineteenth day of the first lunar month, and the Lantern Festival has passed. Most people would not choose this time to go to Happy Valley to play.

Therefore, there is basically less need for queuing.

For example, for a big project such as a roller coaster, you only need to queue for 20 minutes. If there are many people on holidays, you may not be able to queue for an hour.

In the process of queuing up, the two of them were not idle, discussing the next research direction.

Han Jiaying first said: The work on PTQ1 has been submitted. Next, I plan to continue to optimize the PTQ series of donor materials. However, there is only one reaction site on the molecule of PTQ1, which is the non-side on the six-membered ring of the Q unit. The position of the chain, I want to introduce some groups on this position, such as methyl group, fluorine atom, chlorine atom and so on.”

Xu Qiu recalled the molecular structure of PTQ1, nodded and said: Yes, but if halogen atoms such as fluorine atoms and chlorine atoms are introduced, the synthesis difficulty may be greater, and if methyl groups are introduced, relatively speaking, it will be better. .”

I think so too, so I plan to start with the introduction of the methyl group and name it PTQ2. Han Jiaying paused and continued:

In addition, I think we can try to add some other concepts. After all, the efficiency of the PTQ system is not top-notch. If there are only materials, the work that comes out is relatively thin. Do you have any suggestions?

Hmm... Xu Qiu thought for a moment, then responded: You can try non-halogen solvents, starting with the most commonly used toluene, but toluene is a bit of a pure concept. As a pioneer, we should do the work well. More far-reaching, such as seeing if THF, a low-toxic, non-halogenated solvent, can be used as a processing solvent.”

Scratch-coating, large-size, flexible, and translucent devices can also be tried. Didn't we buy the equipment from Lanhe? Now that the laboratory has moved to Jiangwan, it is much more convenient to do experiments. The scraping-coating machine needs to be used. .” Xu Qiu added:

In addition, during the winter vacation, I read a lot of literature and found several high-quality donor materials developed by other research groups. I plan to use them. I need you to synthesize them and further optimize them.

Okay, I'll listen to you. Today's school girl is very well-behaved.

On the afternoon of February 20, the research team officially started working.

Because March 1st of this year happens to be Sunday, the start of this semester is March 7th, and there is still more than half a month before the start of school.

On the first day of the research group's work, a group meeting will be held as usual, mainly to give an outlook on the next work.

In this group meeting, in addition to the official members of the research group, several undergraduates and the newcomer Fan Wentang were also present, which is equivalent to the presence of all members.

The perovskite team first reported that the tin-based two-dimensional perovskite system, Wu Feifei and Sun Wo had written the first draft of the ACSEL review during the holiday.

Moreover, they communicated with Wei Xingsi via email, revised the manuscript, and submitted it during the holidays. The work efficiency is quite high.

Next, the focus of the perovskite team's work is to study the lead-tin mixed two-dimensional perovskite.

Wu Feifei's strategy is to walk on N legs. She arranged several lead-tin mixed two-dimensional perovskite systems for Sun Wo to conduct research simultaneously.

At the same time, she also put an insurance policy on herself: The efficiency may not be able to improve, if it is not possible, we can only report the data on the migration rate...

Wei Xingsi naturally understood what Wu Feifei said, and said noncommittally, Let's try it first.

The pressure on Sun Wo this time is actually a bit high, because the relocation of the laboratory and the redesign and transformation of the glove box are also caused by him to some extent.

If he doesn't get a good result with a new glove box, then he has no good excuses other than to say it's his fault.

Duan Yun didn't report. He was holding a computer to operate at the group meeting, probably dealing with the affairs entrusted to him by Huawei.

Tian Qing reported the results received during the holiday, from Feng Shengdong in Sweden and Ronald in Finland.

Feng Shengdong in Sweden tested TAS separately for the two effective layers of the top battery and the bottom battery.

The results indicated that charge recombination in both active layers was not severe, but no further conclusions could be drawn.

There is no way, TAS test is originally a separate effective layer film, not a battery device.

For traditional single-junction devices, it is relatively easy to analyze with TAS, because there is only one effective layer, but it is really difficult to test the current stacked devices with TAS.

On the side of Ronald in Finland, they mainly analyzed the problem of interfacial recombination inside the laminated device.

They compared the two single-junction devices with the final double-junction stacked device, and found that the total interfacial charge recombination in the stacked device was much less than that of the original two single-junction devices.

If more in-depth conclusions are to be drawn, more systematic research is needed.

In contrast, Tian Qing believes that the next step should be to cooperate with Ronald of Finland to prepare stacked devices with different transport layer materials, and analyze the influence of the transport layer and device structure on the recombination of the charge interface.

The story told is how to design stacked devices to reduce the device performance loss caused by interfacial recombination, and then obtain high-efficiency devices.

In this case, Feng Shengdong in Sweden will basically not be able to cooperate.

Of course, this is also very normal. We can't cooperate if we can't cooperate.

Chen Wanqing brought some news about Blue River Company.

The number of Blue River team has further expanded, from a small team of a few people at the beginning to a small team of nearly 30 people now, and has also been equipped with personnel, finance and other sub-departments.

In addition, after Blue River has developed the second-generation scratch-coating machine, the first-generation prototype zero machine based on full-printed electronic technology has also been completed.

This No. 0 machine is expected to print and prepare a variety of electronic devices including sensors, chips, and solar cells in the future, but it is still just a prototype machine and does not have so many functions.

On the one hand, it is because the printing process is not mature enough and needs continuous optimization;

On the other hand, there is also a lack of functional inks for printing, which are at the heart of all-printed electronics.

Therefore, Blue River decided to increase the research and development of functional inks.

At the same time, Blue River also found a teacher from Tongji University, Fang Jia, to cooperate in the research of printed flexible light-emitting devices OLED.

It is said that he will also plan to lay out supercapacitors, microelectronic integrated circuits and so on.

Perhaps Blue River has also discovered that it is not possible to put all eggs in the organic photovoltaic basket, and spread the research fields to diversify risks.

Xu Qiu reported his thoughts on the next work:

Designed and synthesized several derivatives of Y-series acceptor materials such as Y11 and Y12, which are expected to make breakthroughs in device performance...

L2, L6, S1, these are the donor materials developed by Zang Chaojun of Qingbei University, Lu Changjun of the Institute of Chemistry of the Chinese Academy of Sciences, and Li Dan of the National Nano Science and Technology Center. I think we can also synthesize some for our own research. .”

Speaking of which, since Xu Qiu began to name materials with initials of names on a large scale, other research groups have also started to follow suit.

Presumably people are also aware of the benefits of this naming.

On the one hand, it is more convenient, and there is no need to give a very long and hard-to-remember name;

On the other hand, this kind of naming is recognizable. As long as you see the letter logo in front, you can know which research group's material it is.

I plan to sort out the previous work on several Y-series materials in the near future and submit them to the public. At the same time, I will ask Han Jiaying and Wu Shengnan to help optimize the donor materials and acceptor materials...

Xu Qiu's idea is that after he submits a few articles he sorted out, the L6-Cl and Y20 materials over there are almost optimized, and they can be seamlessly connected, which is simply perfect.

Han Jiaying responded to Xu Qiu's call and said that she would help synthesize L2, L6, S1 and other materials, as well as their derivatives.

At the same time, Xuemei also proposed the synthesis route of PTQ2 materials, and intends to apply non-halogen solvents, scrape coating and other methods in this system.

Wu Shengnan had a discussion with Xu Qiu during the winter vacation, and they wanted to leave the name of Y1.

In this way, the name of the Y5 material originally developed by the post-doctorate sister was changed to Y1, the names of Y6 and Y7 remained unchanged, and the names of the Y1-Y4 material originally developed by Xu Qiu were changed to Y2-Y5.

This is mainly to report a system that is not so efficient first. For example, the system chosen by Wu Shengnan is J1:Y1.

In this system, neither the donor material nor the acceptor material is optimal, and the device efficiency is only 13.22%.

Xu Qiu didn't have any objections. This was a common routine in Shui Wenwen, and everyone knew it by heart.

This is also the case when he reported ITIC. The system used in the first AM article was PCE10:ITIC, and the efficiency was only 8%.

If 8% is used as the benchmark system, as long as the efficiency of the system exceeds 8%, a good article can be published.

But if you report on the best system, for example, if you directly increase the efficiency to more than 12%, then it will be difficult to publish a good article if the rest of the system cannot reach 12% efficiency.

The best system of direct reporting, from a utilitarian point of view, is detrimental to others and not beneficial to oneself.

Because it will not only smash your own job and increase the difficulty of publishing your own articles, but it will also increase the difficulty of publishing articles by other colleagues, which is equivalent to smashing the jobs of your colleagues.

Therefore, when there is a major breakthrough, everyone will hold back first to make the performance improvement process smoother.

Unless it can impact the work of major sub-journals of Nature or even CNS, then it is another matter.

If there is an opportunity to publish, I will definitely spare no effort to make an impact.

In addition, it is worth mentioning that Wu Shengnan's operation of taking away the Y1 name is actually taking advantage of Xu Qiu.

After all, the Y series materials were originally developed by Xu Qiu. Now that Wu Shengnan wants to take the lead, it is equivalent to stealing Xu Qiu's article.

The postdoctoral senior sister is an old scientific researcher, so she is naturally aware of this, so she offered to share this article with Xu Qiu.

This is what Xu Qiu deserved, so he didn't shirk it and just accepted it with a smile.

In the end, Wu Shengnan preliminarily completed the writing of two articles during the winter vacation.

Now these two works lack the data of the light source and the data of the NIM third-party inspection. These two data can be completed in early March, and they can be submitted one after another at that time.

Among them, the first one is the Y1 system, and it is planned to vote for AM.

Because of the new system, 13% efficiency as the highlight, plus Xu Qiu's name and the addition of Wei Xingsi's research group, there is basically no problem in this AM.

In another article, the postdoctoral student combined Y6 and Y7 materials together, and the highest device efficiency in this work reached 14.16%. She plans to submit an article to JACS.

In fact, under normal circumstances, her efficiency can break the 14% system, and she can also consider going up to the big sub-journal of Nature, after all, she broke the current world record for organic photovoltaics.

Although the probability of the final draft is not high, maybe only 20 to 30%, but at least there is a chance.

However, the post-doctoral sister did not do this, mainly because she knew that Xu Qiu had a system with an efficiency close to 15%.

In this case, if she submits to a major sub-journal of Nature, the review period will last for three months. If she is rejected, she may not be able to stabilize the manuscript if she submits to AM or JACS at that time.

Because at that time, Xu Qiu's more efficient system may have already been published, and the 14% in her hand has no advantage at all.

To be on the safe side, it is not bad to get a JACS.

Mo Wenlin reported the next experimental plan, mainly about the stacked devices of Y series materials. This research direction was given to her by Xu Qiu.

Because Xu Qiu has a hunch that if he wants to make further breakthroughs in the efficiency of organic photovoltaic devices, it may be necessary to combine the two killers of Y-series materials and stacked devices.

Although he tried this idea before and failed, but at that time, there were many factors for the failure, including unfamiliarity with these two fields, coupled with limited choice of materials, and so on.

Now, whether it is the development of Y series materials or the preparation of stacked devices, Xu Qiu has rich experience.

Moreover, the material library in the field of organic photovoltaics has also been deepened a lot by colleagues, and if we try again, we may have different results.

Several undergraduates attended the group meeting, but did not report.

Fan Wentang was still reporting on the literature, and he just talked about some of the literature that Xu Qiu saw during his winter vacation.

Although Fan Wentang's literature report was of little benefit to Xu Qiu, it could be seen that the other party had made adequate preparations.

From the looks of it, Fan Wentang wasn't completely idle during the winter vacation, maybe he took the initiative to ask for documents from Mr. Wei.

Xu Qiu originally thought that he was the only one who worked hard during the winter vacation, but he didn't expect that the other members of the research group were also working very hard.

It seems that only Tian Qing and four undergraduates are paddling...

However, Tian Qing and undergraduates are after all, so you can't ask too much of them.

After the group meeting, Xu Qiu, Wu Shengnan, Wu Feifei and others were summoned to the office by Wei Xingsi, mainly to exchange information about key projects and the project declaration of the Outstanding Youth Fund.

The application time is in early March, and the project review time is generally about half a year, so the results will be released in late August.

This matter has little to do with Xu Qiu. He is mainly responsible for controlling the general direction of the writing of the book. Now that it is the eve of the declaration, it is mainly the work of language polishing, checking for omissions and filling in vacancies.

Leaving Teacher Wei's office, Xu Qiu found two of his undergraduates, Xu Xinjie and Yin Houlang, and invited them to the small meeting room on the third floor.

Xu Qiu planned to chat with them to see if he could add some burden to them.

After all, to obtain the 18% efficient L6-Cl:Y20 system that was explored in the simulation laboratory, there are still many steps of optimization work to be done. much time.

Xu Xinjie and Yin Houlang looked confused, not knowing what Xu Qiu wanted from them, but they didn't ask any further questions, and followed Xu Qiu obediently to the meeting room on the third floor.

Xu Qiu secretly checked the proficiency of the two experimental operations.

It was found that Yin Houlang's proficiency in organic synthesis rose faster, while Xu Xinjie's proficiency in device preparation rose faster, which should be mainly related to their division of labor.

However, the experimental skills with the highest proficiency of the two are around the fourth level, and have not reached the fifth level.

Of course, this is also normal.

It took Xu Qiu a year to upgrade most of his experimental skills to the fifth level by relying on the simulated laboratory system.

For a normal master's student, it is already very good to be able to upgrade the main experimental skills to the fifth level when they graduate.

It’s interesting to say that the current situation is that most graduate students have finally brushed up their proficiency level to level 5 and become familiar with the entire field when they graduate, but they can’t find a job in the corresponding field after graduation, so they can only be forced to change careers , The professional knowledge acquired is almost never used again.

Just like the college entrance examination, most people's knowledge reserve will reach its peak in the third year of high school, and then it will slowly decay.

It is not entirely accurate to say attenuation, it can be said to be the attenuation of real-time memory.

If you look at it from another angle, a lot of knowledge seems to be forgotten, but it is not completely forgotten. Instead, it is transformed into the subconscious and stored. If it is needed when it is needed, there is a high probability that it can be remembered.

Even if you can't remember it, you can quickly grasp it if you spend a little time looking up the information. After all, it is knowledge that you have learned once.

This may also be the meaning of learning. Even if it is temporarily forgotten, it can be retrieved at a relatively small cost when it is used later.

Xu Qiu looked at Xu Xinjie and Yin Houlang, and asked, Do you know why I asked you to come here?

The two were a little cautious, and they both shook their heads: I don't know.

It's like this. You all participated in the group meeting today. I proposed two directions at the group meeting. One is the development of new donor materials, and the other is the synthesis of new Y-series acceptor materials. I want you to Go help a group of Wu Shengnan and Han Jiaying. It would be best... Xu Qiu paused, then continued: We can devote more time to scientific research every week.

Yin Houlang's eyes lit up, and he immediately said: I have no problem, I promise to complete the task... Do I still follow Senior Sister Wu Shengnan?

Yes, yes. Xu Qiu responded, then turned to look at Xu Xinjie.

Xu Xinjie thought about it for a moment and said there was no problem.

Xu Qiu nodded in satisfaction. The manpower issue has been settled. I hope they can grow up quickly and become my right-hand man soon.