I Have a Research Support System

After confirming the specific relocation date, in the next few days, the small partners in the research team stopped doing experiments and were mainly busy with the preparations for the relocation of the Handan Laboratory.

Similar to the relocation of the Zhangjiang laboratory last time, the relocation of the Handan laboratory this time also has a lot of tasks, and many of them are troublesome.

First of all, it is the packaging of instruments and equipment.

At the beginning, most of the instruments in Zhang Jiang's laboratory were glass instruments, or fool-proof instruments, the ones that could be used just by plugging them in.

The Handan laboratory not only has a large number of instruments, but also a very high level of complexity.

For example, instruments such as TRPL, CELIV, and TOF need to be connected with several or more than a dozen lines. Once a line is connected incorrectly, the instrument will most likely not work normally, and may even burn out the instrument.

Therefore, before each instrument is unpacked, two people must be present to record the connection mode of the line by various means.

Fortunately, Wei Xingsi's research group now has an advantage, that is, it belongs to the "first-generation research group", that is, the "old people" in the research group have not left yet.

As the saying goes, "An old family is like a treasure." For example, Wu Feifei, Chen Wanqing, and Xu Qiu have basically participated in the construction of the laboratory from scratch, and are very familiar with the various instruments and equipment in the research group.

If it is a research group that has been developed for many years, and the newcomers use the instruments set up by the brothers and sisters who have graduated in the past, it is likely that the details of the use of some instruments are not so clear. know how to solve it.

Although it was fun to use the wheels that other people had already built, it was very uncomfortable when something went wrong.

Secondly, the moving process also involves the handling of medicines in the glove box.

At the beginning, most of the medicines in Zhang Jiang's laboratory were relatively "rough", and there was no problem if they were left in the air for a long time.

Many of the medicines in the Handan laboratory, especially photoelectric materials, are stored in the glove box.

Once they leave the nitrogen environment, they will definitely deteriorate immediately, but there is a certain probability that their performance will be compromised.

For example, these optoelectronic materials can easily make devices with an efficiency of 12% in Handan, and put them in the air for a few days, and then transfer them to the Jiangwan laboratory to prepare devices under the same conditions. Maybe only 10%, 11%.

Most importantly, this decline in efficiency is a reflection of results.

If you want to find out what causes the performance degradation, you must repeatedly prepare the device.

But even if the device is repeatedly prepared, the reason behind it may not necessarily be found.

For example, Xu Qiu's current organic photovoltaic laminated device uses more than a dozen materials including the transmission layer. If one or two of the materials have deteriorated, if you want to find out which material is wrong, this Difficulty, those who have learned permutations and combinations should know how difficult it is...

If each experiment uses the control variable method to control one variable alone, there are thousands of possible situations in the end.

What's more, the problem is not necessarily the material, but also other aspects, such as the failure of the evaporated crystal oscillator, resulting in inaccurate thickness calibration, etc...

Therefore, when a situation arises, many times the experimenter will not look for the reason, but chooses to replace all the cheap materials with new ones, and then find the cause of the problem in the experiment, which can save a lot of time and cost.

In order to solve the problem of storage during the drug transfer process, Xu Qiu and the others finally found a way after discussion——

That is to block these medicines in the evaporation chamber of the evaporation glove box, and then first evacuate the evaporation chamber into a vacuum, and then fill it with nitrogen at an atmospheric pressure.

In this way, the medicines stored inside can enjoy the protection of nitrogen, and at the same time, some liquid medicine containers will not be crushed due to the negative pressure environment.

In the laboratory, excessive positive pressure is terrible. For example, most explosions are caused by excessive positive pressure.

But in fact, the vacuum environment in the laboratory, or negative pressure, is also terrible.

Because many glass instruments are used during the experiment, and some glass instruments have limited bearing capacity for negative pressure.

For example, water pumps are usually used for rotary evaporation, and oil pumps with stronger vacuum capabilities, or mechanical pumps, are rarely used.

On the one hand, it is because in most cases, the vacuuming capacity of the water pump is enough to remove the low boiling point solvent in the bottle.

It is really impossible to add some heat to the rotary evaporator, under the condition of 70 or 80 degrees Celsius, toluene with a boiling point of about 130 degrees Celsius can be removed relatively cleanly after half an hour of steaming.

On the other hand, it is also because if a mechanical pump or other pump with stronger vacuuming capacity is used, some glass instruments may be "exploded" by pumping.

If unfortunately a bottle is exploded, and the glass of the fume hood where the rotary evaporator is placed is not pulled to the bottom at this time, it is very likely that the experimenter will eat a "fragmented glass grenade".

Although there is a high probability that this kind of debris will not kill anyone, the disfigurement basically does not escape...

In addition to rotary evaporation, the transfer cabin of the glove box in the laboratory needs to be vacuumed three times when transferring items, and it also faces the problem of negative pressure.

For example, if you want to transport some bottles with relatively poor carrying capacity, especially those with low boiling point liquids inside, they may also explode.

For example, when the senior sister transferred the wiping solvent from the outside of the glove box to the inside, she burst a small bottle of methanol.

Because of the previous sign, when other people in the laboratory later transferred the liquid, they would not pump the vacuum in the transfer chamber to a very low level every time.

I'd rather leak a little air in than risk blowing it up.

Solvents such as methanol are okay, they are relatively cheap, and if they are lost, they will be lost.

If it is a solution that took a few days of hard work to get, if it is pumped, it will be a big loss.

In addition to handling the medicines in the glove box, the research team also faced the problem of remodeling the spin-coating glove box during this relocation.

Therefore, it is necessary to empty everything inside the spin-coating glove box.

That said, a major inventory of the spin-coating glove box is in order.

The evaporation glove box is not necessary, just let the moving company pull it over.

Although the spin-coating glove box is theoretically cleaned every day, there are a lot of messy things in it.

Because there are many public areas inside the glove box, most people will not help others to pack things in public areas.

If you kindly helped others throw away a solution bottle or two, only to find out that what you lost was the result of other people's hard-working experiment for a week, then it is estimated that there will be a real PK.

Of course, if this kind of thing really happened, there is also a high probability that there is only the sufferer and the perpetrator cannot be found...

However, in fact, I can't blame others for this, and my own responsibility may be even greater.

Anyway, after the experiment ended, Xu Qiu would put the things he would use in the future into his lock box instead of putting them in the public experiment area.

When others throw things, it is impossible to open your box and throw away the contents, unless there is hatred.

Now to clean the glove box, what everyone has to do is to pack the medicines, solution bottles and other items that they still need in the past into a big lock box, then collect them, transfer them and store them in the evaporation gloves In the evaporation chamber of the box.

The remaining unclaimed items will be disposed of as garbage.

Among them, in addition to some real garbage, such as empty reagent bottles and used pipette tips, there are also many solutions that have not been used up before, which are packed in small brown bottles one by one.

Not to mention, the number of small brown bottles of the remaining part of the solution is quite exaggerated, exceeding 100 bottles.

The main reason is that the solution has the best use time, and most of them are ready-to-use, so it is generally rare to use a solution that has been prepared for more than one month.

These "expired" solutions are usually not disposed of because of trouble, and they are piled up in a corner of the glove box.

At the same time, people may also hold the idea of ​​​​"what if it will be used later".

But now they must all be disposed of.

However, the procedures for dealing with these waste liquids are still somewhat cumbersome, and they cannot be discarded without thinking.

It is necessary to open the solution bottles one by one, and then classify and collect the waste liquid inside according to the type of solvent.

In the end, after the discussion between Xu Qiu and Wu Feifei, Sun Woxi raised the task.

Because the other undergraduates have already run away, and the newcomer Fan Wentang is not yet familiar with the laboratory, so the two of them thought about it, and only Sun Wo was left.

In addition to the packaging of instruments, the handling of drugs in the glove box, and the general inspection of the glove box, Handan also involves the transportation of hazardous chemicals, which needs to apply for permission and review from the department.

This kind of communication with the departments should naturally be handed over to Wei Xingsi.

Over the past few days, the situation in the laboratory is that the students are busy, and Wei Xingsi is also busy.

Even Mr. Wei complained to Xu Qiu: "If I knew it earlier, I would arrange the moving plan later, and I will move after I come back from the New Year."

However, everyone knows that this is just a complaint. Now that the decision to move has been made, there is no turning back.

Moreover, if things like moving are delayed, the experiment may be suspended for a month or even longer. It must be moved as soon as possible.

On Friday, Xu Qiu and Wu Feifei were in charge of receiving the sales team sent by Modu Glove Box Company.

The other party sent four people over, including an engineer, nearly 40 years old, wearing cloth overalls with a pen in the upper pocket of the overalls, and an army green cloth cap.

Xu Qiu blindly guessed that the other party was wearing a hat to cover up the possible "blank space" on the top of his head.

There is also a sales assistant, a young woman, dressed as a white-collar OL, who looks less than 25 years old, probably a college student who has just graduated from university, of course, it may be because of good maintenance, and she looks young.

In addition, there are two younger brothers who are responsible for doing chores, and they basically don't communicate with Xu Qiu and the others.

The first stop of the glove box sales team is Handancai-216.

They first got to know the specific needs with Xu Qiu and Wu Feifei, then took a ruler to measure the condition of the glove box at 216, recorded a series of parameters, and took some physical photos of the glove box.

The second stop was Jiangwan Xiancai 522. They inspected the situation there and took some photos.

At three o'clock in the afternoon, the glove box sales team finalized the final design drawing after discussions with Xu Qiu and the others.

The final version of the blueprint is just some modifications made on Xu Qiu's previous blueprint, but the changes are not big.

On the one hand, the original 1.2 meter new box has now been replaced with a smaller 1.1 meter box. This is part of the reason why Wei Xingsi was able to offer a discount of 2W soft sister coins when he negotiated the price before.

In fact, Wei Xingsi's research group does not have high requirements for the size of the glove box. Even if the length is made smaller, such as 1 meter, it is not impossible.

After all, these two new glove boxes only need to be spin-coated, and there is no need to put a balance in them, just a glue spreader, which is very space-saving.

But the glove box has a size limit. The length of 1 meter is basically the limit of the double-glove glove box. If it is made smaller, the two gloves cannot be put down, and it can only be made into a one-handed operation. glove box...

On the other hand, the glove box sales team proposed that a "skylight" with the same diameter but inclined at 45 degrees can be opened in the middle of the transmission compartment between the two glove boxes. This design can make it easier to pick and place items.

In addition, the large compartments of the two new spin-coating glove boxes can also be selected not to be opened on both sides, but to be opened between the spin-coating and solvent storage glove boxes like the small transfer compartment, and also use a 45-degree inclination angle Open a "skylight".

These two suggestions are quite good, so Xu Qiu and the others chose to adopt them.

The new design drawing, compared with the previous design drawing where the large cabin was set up on the sides of the two glove boxes, uses the old design drawing of a 1.2-meter box, which can save about 1.4 meters of space.

In this way, the evaporation glove box can be placed side by side with the three rows of glove boxes, instead of being placed in a capital "τ" as before, which looks more beautiful.

After finalizing the final design, everyone returned to Handan again and signed the contract in Mr. Wei's office.

The sales assistant of the glove box company said: "If we make a schedule here, we will not be able to start work until the eighth day of the Lunar New Year. At that time, we need to come and take the glove box away."

Wei Xingsi had no objections, and then, this task was handed over to Sun Wo who lives in Shanghai.

Sun Wo thought: "Why is it always me who gets hurt..."

After sending off the glove box sales team, Wei Xingsi saw that the preparatory work for the laboratory move was almost done, so he organized an impromptu group meeting.

The perovskite team first reported that the tin-based two-dimensional perovskite system, the ACSEL review written by Wu Feifei and Sun Wo, is currently 80% in progress, and it will definitely not be completed before the holiday.

Because this year's winter vacation lasted for a month, Wei Xingsi said very "kindly": "Wu Feifei, Sun Wo, you go back for the New Year, take the time to write the summary again, and when the vacation is over, we will make changes when we come back, and then Drop it."

What else could Wu Feifei and Sun Wo do? I had no choice but to nod in response.

In fact, their remaining workload for this review is not too big. If 20% is allocated to two people, it can be done in two or three days with a little effort.

Compared with the "earned extra" two weeks of vacation, this pay seems worthwhile.

Except for the review, the perovskite team has made almost zero experimental progress in the past two weeks.

In the first half, Xu Qiu and the others were impacting the stacking efficiency, occupying all the resources of the laboratory, and in the second half, they started to tidy up the laboratory and prepared to move, so there was no time to start work.

Duan Yun did not report.

Teacher Wei kindly reminded: "Duan Yun, Chen Wanqing, you should hurry up and write your graduation thesis. After the leave is accepted, show it to me, and I will correct it for you."

The two of them, in fact, have already written their graduation thesis now.

After all, I have published so many articles, and I only need to translate my work from English to Chinese to write my graduation thesis, which is very difficult.

In other words, they are only one defense away from graduation.

As for the defense, as long as the workload increases and there are SCI articles and graduation thesis to support it, it is generally difficult to fail, unless the tutor interferes with it.

Tian Qing reported on the research work on the charge transport mechanism of stacked devices in the past two weeks:

"I have sent samples to Feng Shengdong in Sweden and Ronald in Finland respectively, but I haven't received the results yet..."

"My own work has made initial progress..."

"But a complete story has not yet been formed, and more experimental data is still needed to support the story..."

Xu Qiu's feeling after hearing it is probably "I'm doing it, I'm doing it, but I'm still doing it well", and the specific degree of completion is not very easy to define.

Tian Qing's experiment was actually relatively easy. She just used Xu Qiu's ready-made devices and performed CELIV and TOF tests.

Moreover, because Xu Qiu improved the ITO substrate pattern used in the laboratory, it is more convenient to test CELIV and TOF now.

Like the imported fixed-area ITO substrate, the effective area is only 0.09 square centimeters. When testing CELIV and TOF, it is necessary to repeatedly align the light so that the light spot hits the effective area of ​​the device.

Otherwise, if the laser is not irradiated right on the battery device, the signal cannot be obtained.

Now this kind of battery device with an effective area of ​​2 square centimeters does not need to be aligned with the light.

Because the diameter of the laser spot is about 5 mm, that is, an area of ​​about 0.2 square centimeters.

Just let the laser shoot at the device at will, and you are not afraid of shooting crookedly.

Chen Wanqing brought some news from Blue River Company.

Now Blue River Company has developed the second-generation scraper coating machine, which has been basically debugged and plans to officially launch it. The price is 20% higher than the first-generation machine.

Wei Xingsi has no plan to continue to purchase the second-generation scraper-coating machine, and the first-generation scraper-coating machine in the group is basically enough.

The most important thing is that there is really not much equipment fee in the group that can be reimbursed.

In addition, the recent sales momentum of Blue River Optoelectronic Materials Co., Ltd. has indeed declined.

This is also normal. In addition to the market being temporarily saturated and competitors responding to these reasons, it may also be related to colleges and universities starting to have holidays one after another.

Xu Qiu's group meeting did not report, and if the "Science" article was written and submitted, he could be regarded as successful.

Originally, he planned to write a few articles on the Y series materials before the winter vacation, and then submit them.

Now it seems that there is not enough time at all, and I can't finish writing at all. I can only talk about it after the vacation.

Perhaps the wish of many scientific researchers is to completely ignore other miscellaneous things and devote all their energy to scientific research.

But in reality, this is almost impossible to do.

Unless you use the money ability, such as hiring a bunch of scientific research assistants to help with chores.

However, most research groups do not have this strength and have to distribute various chores to students.

In addition to helping Xu Qiu prepare the laminated device, Han Jiaying has not missed her own work. The article on PTQ1 work, the target journal AM, has been written and submitted.

Wu Shengnan has shifted her work focus to the Y series materials. She is now in charge of the Y1-Y4 materials developed by Xu Qiu, and the various characterization work of the Y5-Y7 materials synthesized by herself.

She reported the latest progress at the group meeting.

Most of the characterization data that needs to be carried out outside the research group, except for the more difficult to measure light sources, have already been obtained.

The characterization tests that can be carried out within the research group are almost supplemented, including light absorption, energy level testing, photoelectric performance testing, and so on.

Of course, these data are only the results of preliminary tests, and may need to be re-tested when the article is actually written.

At present, the system with the best performance is Xu Qiu's J4:Y3 system, which was achieved by Wu Shengnan at 14.60%, while the efficiency of the three systems designed and synthesized by her is still generally at 13%-14%.

As for the article, Wu Shengnan has not started writing it yet, because he has to be responsible for the characterization tests of seven systems at the same time, and the time is still relatively tight.

In fact, most of the data is already available now, and the story is not difficult to tell. You can start writing articles directly. Occasionally, the lack of a representation will not have a big impact. Write the article first, and then fill in the representation later. That's it.

I just don’t know if the post-doctoral senior sister is planning to work hard and explode during the Chinese New Year, or whether she is planning to write after receiving leave.

Perhaps, fighting now is a better opportunity.

The reason why it is said that hard work does not necessarily lead to success is that the rate of return obtained by hard work in different periods is different.

In other words, most of the time, the rate of return on effort is very low for individuals.

But at this stage, Wu Shengnan works hard under Xu Qiu, which is an efficient effort. The more he works, the more he will gain in scientific research results.

Although it is definitely not as good as that kind of big boss research group, "in prison for four or five years" to stabilize a CNS, but after two years of hard work, change six or seven SCI one area, in terms of scientific research results alone, it can exceed more than 90% associate professor.

In the end, Mo Wenlin did not report. During this time, she was mainly helping Xu Qiu with experiments related to the "Science" article.

Several undergraduates had already gone home early and did not attend the group meeting.

After all, today is the nineteenth day of the twelfth lunar month, and in a few days the twenty-third of the twelfth lunar month will be the New Year in the north, and the twenty-fourth of the twelfth lunar month will be the New Year in the south.

In the concept of some families, when the new year is off, it is already considered a formal New Year's Eve, and the family needs to be reunited.

Fan Wentang insisted on not going home until now, so Wei Xingsi asked him to prepare and report the recent results.

Speaking of which, during the time Fan Wentang came here, he was basically in a free-range state, and he didn't communicate with Wei Xingsi directly. It was Xu Qiu or Han Jiaying who took him.

Therefore, he is relatively imaginary, now that he has an opportunity to show it in front of his mentor, he will naturally not let this opportunity pass.

Fan Wentang summarized and reported the literature related to organic photovoltaics that he had read during this period, mainly from the research group. Because the authors of the articles were all sitting below, he was a little nervous.

After Xu Qiu heard it, he felt that Fan Wentang's understanding of the ITIC-type non-fullerene system in the field of organic photovoltaics had no problem in the general direction.

Although there are occasional small deviations, they are only minor blemishes.

For a prospective doctoral student, his performance is still very passable.

Wei Xingsi was quite satisfied with Fan Wentang, and he commented at the end: "Fan Wentang, your reporting time can be shortened appropriately in the future. The time spent by one person is more than the sum of the others."

"Okay, I will definitely pay attention in the future." Fan Wentang nodded awkwardly, mainly because he was not very clear about the rules of Wei Xingsi's research group.

The group meeting of his original research group was arranged on Saturday morning, and then it was held once a month, one day at a time. What he did this month needed to be clearly stated like writing a diary.

Everyone may have to report for half an hour, which together means opening from morning to night, so he prepared a PPT with reference to the standards of the previous research group.

After the group meeting ended, Wei Xingsi gave everyone a red envelope, probably considered a year-end bonus?

Everyone's red envelopes are different in thickness, and the red envelope in Xu Qiu's hand seems to be the thickest one.