I Have a Research Support System

Xu Qiu walked to the corridor alone and dialed Xiao Wu's phone.

Hello, I'm a student of Wei Xingsi's research group at Modu Comprehensive University.

Oh, Teacher Wei mentioned to me before that your new laboratory in Jiangwan is going to be renovated, right?

That's right, I want to ask when it's convenient for you to come and meet and discuss the plan.

I've been here in Jiangwan for the past month, and I've received several decoration orders for your school's Department of Chemistry and Materials.

That's okay... Xu Qiu considered that Ronald would come over next week, so he pushed back the time: The time is tentatively scheduled to be after July 10th.

Okay, okay, call me in advance when the time comes.

Afterwards, Xu Qiu called Lao Wang and Manager Hu respectively, and they both made an appointment in mid-July.

After Xu Qiu made three phone calls, the work of the other three people was also completed, none of which were too difficult.

Wu Feifei mopped the floor with the mop from the restroom, but the mop in the restroom here is fairly clean, unlike the mop on the first and second floors, it smells...

Based on the original sketch drawn by Xu Qiu, Duan Yun added many annotations, including the actual size of the room, the location of water pipes, ventilation pipes, and electrical boxes, etc.

Mo Wenlin also took hundreds of real-life photos with her fruit 6 mobile phone, and can reproduce the scene of the room through these photos for future use.

Where are we going next, shall we go straight back? Duan Yun asked while playing with the tape measure in his hand, pulling it out, putting it back, and pulling it out again...

Hmm... Xu Qiu thought for a moment, and said, Go and see Mr. Wei's office in 513 first, and then go to the student office on the fourth floor downstairs.

I agree. Wu Feifei said, Let's investigate first and see if there is anything better in the student office.

Mo Wenlin had no objection and nodded in agreement.

After turning off the lights and gates of 520 and 522, the four of them walked to the gate of 513, and found that the gate here was locked, and although it was also a glass wall, there was a layer of frosted stickers on the inside, so it was impossible to see. Know what's going on inside, maybe it's because of the office.

Xu Qiu and the others had no choice but to give up, and went down to the fourth floor from the next stairs, and then walked a few steps to room 401 of the student office.

The door is not locked here, but there is no one there. The interior as a whole looks like a cubicle with more than 20 seats and has not been cleaned. If you come here later and move here, the discussion in the group will not be the same as before. It is convenient when material 1 is 216, because you have to pay attention not to affect other people.

At this time, Xu Qiu found that there was a small room inside Room 401, so he called others to come over.

The small room is separated from the large office outside by a door. The inside is also not cleaned. It is about 20 square meters and has five or six desks, which can seat about 10-12 people.

This room is nice. Wu Feifei looked at it and said with satisfaction.

Well, go back and ask Teacher Wei to apply. Xu Qiu nodded.

After the checkpoints were completed, the four of them took the school bus back to the Handan campus again, returned to the first floor of the materials, and reported today's situation to Teacher Wei.

The work of the new laboratory was temporarily completed, and Xu Qiu handed over to Han Jiaying, Mo Wenlin and Duan Yun the remaining matters of sorting out the dimensions of the instruments and drawing schematic diagrams, while he himself continued to sort out the IT-4F and Two jobs for IT-DM.

The two works this time are different from the previous two works based on ITIC. The characterization has not been fully completed, and the time consumption may be more time-consuming.

Time passed by in a flash, and a week passed in a blink of an eye.

Monday group meeting.

The new system developed by Wu Feifei has a bumpy road and there is no breakthrough for the time being. The performance of two-dimensional perovskite devices using butanediamine, hexamethylenediamine, and octyldiamine as the organic spacer layer is very low, with a maximum of only 4%. It is necessary to optimize the processing conditions.

Wei Xingsi did not criticize harshly, but patiently encouraged her a few words.

Last week, Tian Qing was mainly responsible for contacting Ronald of Finland and handling other matters, including making posters, posting posters, booking meeting rooms, making communication PPTs, etc., so the experiment was suspended for a week.

Wei Xingsi asked: Have you checked Ronald's flight tomorrow? When will he arrive in Shanghai?

Tian Qing replied: I have checked, and he is expected to arrive at Pudong Airport at ten o'clock tomorrow morning.

Okay, Wei Xingsi nodded and said, I'll pick up the plane tomorrow. On Wednesday, I'll take the foreigner out for a stroll. On Thursday, we communicate all day. On Friday, he flies away... By the way, Xu Qiu and Tian Qing, you guys Are you free on both Wednesdays?

Yes. Available. Xu Qiu and Tian Qing responded.

Okay, then the two of you will be together then. Wei Xingsi said.

Duan Yun has submitted one JMCA paper, and the other ACSAMI paper is still being written.

Chen Wanqing looked triumphant, and began to report:

Last week, I modified IEICO and synthesized three non-fullerene acceptors, IEICO-4F, IEICO-4Cl, and IEICO-DM. The synthetic route is...

Among them, the light absorption properties of IEICO-4F and IEICO-4Cl two acceptors are red-shifted compared with IEICO, and the absorption band edge reaches the position of nearly 1000 nanometers, and the PCE10 donor material achieves good light absorption. Complementary, in addition, the HOMO/LOMO energy level has also been reduced, reducing energy loss...

In the end, the highest photoelectric conversion efficiency of the PCE10: IEICO-4F system reached 11.77%, the PCE10: IEICO-4Cl system also reached 11.32%, the performance of IEICO-DM was poor, and the highest efficiency was only 8.29%...

The senior sister got the IEICO-4F material on Friday, and only made a batch of devices on Sunday.

Although the efficiency data seems to be only 11%, in fact, according to Xu Qiu’s experimental results in the simulation laboratory, the efficiency of the PCE10:IEICO-4F system has reached 12.44%, breaking the existing world record that has been maintained for more than three years.

Xu Qiu still remembers when Xu Zhenghong’s IDTBR system came out and blocked Chen Wanqing’s IDT-ICIN system’s 6% efficiency with 10% efficiency. ..., today is finally a wave of eruption, a shameful blow.

Of course, the value of 12.44% is difficult to reproduce in reality at this stage, because in the simulation laboratory, Gong Yuanjiang’s glove box is used, which is 0.3%-0.5% higher than the normal value. Of course, this result system is admitted.

On the other hand, Xu Qiu obviously found that after the efficiency value reaches more than 12%, it becomes more difficult to increase it, just like squeezing toothpaste.

The main reason is that the structures currently used are relatively similar, and the acceptor materials are basically derivatives of ITIC. Perhaps the potential of this system has been tapped to a large extent. If you want to achieve a major breakthrough, It requires major adjustments based on the existing structure.

However, the efficiency is now 12.44%. Xu Qiu still has several optimization solutions based on ITIC materials that have not been used to further improve the performance of the device and bring the efficiency to 12.7%. It should not be difficult to complete the task, it is just a matter of time.

Xu Qiu has nothing to report. After finishing the design of the new laboratory last week, he has been sorting out data, processing data, writing articles, and guiding Mo Wenlin and Wu Shengnan to do experiments.

If you have to write four articles in a row, it will be difficult to write, just like a DEBUFF with a work efficiency of -20%.

However, I can only bite the bullet and write it down. For articles like articles, early submission and early peace of mind, and late changes.

For the same job, if you vote now, it may be AM, after three months, it will become AEM, in the past six months, it will become JMCA, in the past year, it may become someone else’s job, even ACSAMI can’t be published ...

Next, Han Jiaying reported, also smiling: Last week, the efficiency of the H43:IT-4F system reached 11.89%...

In addition, the synthesis of the planned PBDB-TF failed because the fluorine reaction did not put the fluorine atoms up, and I planned to try again later. Another PBDB-TS was successful, and the synthesis route...

The device test results show that the performance of PBDB-T is comparable to that of H22, and that of PBDB-TS is comparable to that of H43. Among them, the efficiency of the PBDB-TS:IT-4F system has reached 11.92%.

At present, among several ITIC derivatives, IT-4F performs best, and it shows good device performance when combined with several donor materials.

Wu Shengnan's report was quite satisfactory. The characterization data of her FN-4F system was basically completed, and she began to prepare to organize the article. The experiment was considered idle.

How could the postgraduates in the group be free? Even if Xu Qiu was willing, Wei Xingsi would not agree. After all, it cost money. Xu Qiu didn't know the exact amount, but the market price was about 20,000 a month.

Therefore, Xu Qiu arranged a synthesis task for her, that is, further optimization based on ITIC. There were three paths before.

One of them is to regulate the structure of the D unit of the main chain. This method is relatively cumbersome to synthesize, and may be the key to further breakthroughs in efficiency. If some new structures are made, there is a high probability that the performance of the device will not increase but decrease, so it is temporarily shelved.

The other two paths are:

For the side chain regulation of ITIC, Xu Qiu gave three target structures, ITIC-Th in which the side chain benzene ring was replaced by a thiophene ring, IDIC in which the side chain benzene ring was replaced by an alkyl side chain, and p-hexylbenzene The base side chain is changed to the side chain of meta-hexylphenyl, m-ITIC.

For the regulation of the ICIN receptor unit, difluoro, dichloro and dimethyl have been tried before, and now monofluoro, monochloro and monomethyl are tried, and the target structures are IT-2F, IT-2Cl and IT-M.

Xu Qiu estimated that there is still nearly a month before the August holiday, and the six materials that Wu Shengnan is responsible for are almost just synthesized, and at the same time, it does not affect the writing of the article in her hand.

Finally, Mo Wenlin reported some basic representations of the three ternary systems. In the process of reporting, she occasionally thought of the three upcoming articles and couldn't help smiling.

Because Mo Wenlin has a master's research experience and can use many commonly used characterization equipment, she is also very quick to learn practically. After three weeks in the group, she has basically mastered a part of device preparation, testing, and characterization. A series of processes, become a skilled worker.

Xu Qiu was very satisfied. The two new leek seedlings are growing very gratifyingly.

There are many good news in the field of organic photovoltaics, and Wei Xingsi is also in a good mood. He waved his hand and said:

This year our group's summer vacation has been extended for three days, and I'll take you out for three days.

PS: Recently, my physical condition is not very good, and the code of 6,000 characters is barely enough. Let's find a chance to explode next week.

PS2: This week’s recommendation ticket has exceeded 3000. I saw a few recommended tickets of 70 and 80. Then add 3000. The monthly ticket is currently 1100+. The total owed is 3W7, and 2W8 has been repaid, which is still 9K short.

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