I Have a Research Support System

After the group meeting, it was already past three o'clock in the afternoon. Because it was too late, everyone in the organic photovoltaic industry did not choose to go to Zhangjiang for synthesis, and they all stayed in the Handan campus.

Han Jiaying was sent to give gifts to several teachers, and Wu Feifei took Mo Wenlin to Yanyuan Hotel to settle down first. At the same time, she bought a folding bed and bed N-piece sets online, and also applied for a temporary card for non-campus personnel.

Chen Wanqing continued to prepare battery devices of the IEICO and IEICS systems. She had almost done the preparation work in the morning, and now she directly spin-coated the active layer. Xu Qiu and Han Jiaying asked her to make a few pieces of PCE10:ITIC, H22:ITIC, PBDB- T: Devices of the ITIC system, as a repeatable experiment.

Wu Shengnan had nothing to do, so she finished her review of perovskite quantum dots.

Xu Qiu began to write articles, two jobs, one PCE10:ITIC system, the target journal AM, the other H22:ITIC, the target journal JACS, no one in the group has published JACS yet, and I don’t know if he can win the first place , he intends to submit a shorter communication format for both works.

Speaking of which, AM does not have Article format articles, but there is not a big limit on the length of articles. Many articles with about 8 pages and 7 or 8 pictures can be published in Communication. Every time Xu Qiu sees this kind of work, he wants to complain about the number of words. It's almost 5000+, this thing is also called Communication?

However, JACS has strict restrictions on the length of articles. Communication is generally about 4 pages, and Article is generally about 7 pages.

The writing structure of Xu Qiu's two works is very simple, and the main selling points are new materials and high efficiency.

The story is also easy to tell. First of all, based on the IDT-ICIN work of the previous senior sister, we optimized the structure of IDT to IDTT, obtained IDTT-ICIN, and named it ITIC. Here we introduce the advantages of IDTT over IDT, and then adopted PCE10 The benchmark donor material makes the device efficiency break through 8%.

Finally, a foreshadowing is buried in the conclusion and outlook of the article, indicating that the light absorption range of ITIC and PCE10 is similar, and it is planned to further study the donor material with wide band gap to match with ITIC.

In this way, the second H22:ITIC system can be successfully derived, and the device efficiency will exceed 10% in one fell swoop, which is equivalent to the world record in the field of non-fullerene acceptors.

In the picture, Xu Qiu plans to only show the four most critical characterizations, including molecular structure, light absorption spectrum and energy level structure, GIWAXS light source test, J-V characteristic curve and EQE curve.

The light source test will be carried out at the end of this month. Xu Qiu intends to submit all two jobs after the light source test is completed at the end of the month. The time is only about two weeks. It is still difficult to write two articles. Fortunately, Key efficiency figures are in hand.

Throughout the afternoon, Xu Qiu was busy with the structure of the article, and his hands on the keyboard basically didn't stop.

In the evening, Mo Wenlin had been settled and returned to Caiyi 216. Xu Qiu took her and Wu Shengnan to conduct the experiment of cyclic voltammetry to test the HOMO/LUMO energy level structure of two materials, ITIC and H22. The girls are all postdoctoral and doctoral students who are cross-disciplinary. They are all new in the field of organic photovoltaics and need to start teaching from scratch.

However, the scientific research background of the two is there after all, and they learned quickly. After Xu Qiu used the ITIC material to do a teaching demonstration, the two cooperated with the operation manual and Xu Qiu's guidance to complete the test of the H22 material.

After Xu Qiu's test, Chen Wanqing's device test results came out.

Among them, the performance of Xu Qiu's two systems has not changed much compared to the original one. The efficiency of Han Jiaying's PBDB-T: ITIC system has increased from 9.2% to 9.64%, which is a small improvement. The PBDB-T system of Xuemei and the original Hxx system Different, the optimal conditions still need to be explored slowly.

However, in the senior sister's own system, IEICO and IEICS are combined with H22, the device performance is average, and the efficiency is only a little over 6%, which is close to the previous IEIC.

However, the combination of these two acceptor materials and PCE10 has achieved a breakthrough in performance - the IEICS system has a maximum efficiency of 8.34%, and the IEICO system has a maximum efficiency of 9.11%.

"IEICO and PCE10 are more compatible?" Xu Qiu thought of Wu Shengnan's FN-4F system in the simulation laboratory, which is also more compatible with the PCE10 system, because the light absorption is shifted to the near-infrared direction, so he suggested: "Test Measure the photoabsorption spectrum to see if it has been red-shifted."

"Okay." Without hesitation, Chen Wanqing spin-coated several samples of IEICO and IEICS components on a glass slide, tested the light absorption spectrum, and quickly got the result, excitedly said: "Xu Qiu, you guessed right, the light absorption red Moving to 650-850 nm, it becomes more complementary to PCE10 for light absorption."

Xu Qiu let out a "hmm", and then said: "If we can move a little further in the infrared direction, the light absorption may be more complementary, and the performance may be further improved, and..."

Chen Wanqing interrupted with a smile: "I'll talk about that later, the efficiency has already exceeded 9%, this time the AM will not be able to escape."

"That's for sure." Xu Qiu agreed, and began to analyze in his heart. The IEICO and IEICS systems of the senior sister are more suitable for submitting to chemical journals, such as JACS and Angew, because the synthesis is more complicated, but the efficiency is high enough. nothing wrong.

Now AM seems to have become the obsession of the seniors. The last time I worked on the IDT-ICIN system, the seniors were only one step away from AM. I hope there will be no more troubles this time.

Several materials such as IEICO, IEICS, and PBDB-T were developed by Xu Qiu after he went to Kainan University in Jincheng. Since there was no backup in the simulation laboratory, Xu Qiu copied them in and started exploring performance.

On Tuesday morning, Xu Qiu got the test results. The PCE10: IEICO system had a maximum efficiency of 9.61%, which did not break 10%. However, the PBDB-T: ITIC system of the school girl reached a maximum of 10.08%, which is another 10% break system.

The ITIC system was developed by Xu Qiu, which seems to have opened the door to a new world.

It is foreseeable that the efficiency threshold of non-fullerene systems will be gradually raised in the future, and the days when the original 6% efficiency can be published in top journals such as AM will never return.

After eight o'clock, after Xu Qiu and Han Jiaying had breakfast together, the school girl mysteriously dragged Xu Qiu to the downstairs of the dormitory and said, "Senior brother, wait for me to come down, and I will show you a treasure."

Not long after, Han Jiaying reappeared with two handbags printed with HX in her hand.

It looks like a bag for clothes. The brand Xu Qiu has never heard of. He usually doesn’t care much about clothes. When he was a child, his parents helped him buy them. The concept of the concept is only limited to the kind of household brands, such as Adidas Nike, as well as the Nima that often appear in urban novels.

'No wonder last week my school girl asked me about the size of my clothes and shoes, and it turned out that I wanted to buy clothes. ’ Xu Qiu asked suspiciously: "Why did you remember to give me clothes? Is today a holiday?"

"Brother, you won't forget," Han Jiaying said in surprise, "Your graduating class is going to walk the red carpet this afternoon."

"If you hadn't reminded me, I would have really forgotten," Xu Qiu said with a soft sigh as he held his forehead, "I didn't come back from the meeting last Friday until this Monday, and then I was thinking of finishing the two articles and submitting them. Get busy and forget about these trivial matters that have nothing to do with scientific research."

"We'll go straight to Caiyi later, senior brother, you can change into this set of clothes," Han Jiaying said coquettishly, "In order to buy this set of clothes, I spent all my pocket money for a month, so you have to support me this month." I."

Xu Qiu patted the school girl's head and said dotingly, "No problem."

At around nine o'clock in the morning, Xu Qiu and Han Jiaying arrived at Caiyi 216, but no one else came yet.

Xu Qiu immediately took off his coat and put on the four-piece suit of shirt, coat, trousers and leather shoes prepared by his school girl. Anyway, he also sat in an air-conditioned office during the day, so he didn't have to worry about getting dirty while doing experiments.

After changing clothes, Han Jiaying nodded in satisfaction: "You're pretty handsome."

"That's right." Xu Qiu looked at the mirror in the office, changed into a formal suit, and really felt refreshed.

However, Xu Qiu doesn't know how a girl defines handsome. Anyway, when he sees other men, except for those who are obviously crooked, they feel the same, and they don't have any special feelings.

Having said that, if you really feel something special, it's dangerous...

Xu Qiu looked at Han Jiaying and saw that she was still wearing her usual casual outfit, so she asked, "How about you, junior, don't you want to change?"

"I'll go back after lunch and change in the dormitory," Han Jiaying explained, "Mine is a one-piece dress, it's too troublesome to change."

At 9:30, other small partners in the research group came one after another.

Mo Wenlin was the first to arrive. When she saw Xu Qiu, her eyes lit up and she said, "Xu Qiu, where are you today?"

Without waiting for Xu Qiu's answer, Han Jiaying declared her sovereignty, "We're going to walk the red carpet together this afternoon."

Mo Wenlin let out an "oh", sat down in her seat, rolled her eyes, wondering what she was thinking about.

After the group meeting yesterday, Mo Wenlin was assigned next to Wu Shengnan, that is, Chen Wanqing was separated from Xu Qiu. Later, Han Jiaying and Chen Wanqing exchanged positions on purpose, and now Xu Qiu and Mo Wenlin are separated. became Han Jiaying.

No matter how dull Xu Qiu was, he could still see what the school girl was doing.

So, he chatted with the school girl on the way back to the dormitory at night. Xu Qiu felt that after Mo Wenlin came here, she only got to know him a little better, and she was under his direct management. It was normal to be close to him. Moreover, he had already made clear to Mo Wenlin his relationship with Han Jiaying, so that the school girl should not worry too much.

However, the school girl said: "Only women understand women best. I found out that school girls have this tendency before. Fortunately, I acted quickly..."

Xu Qiu was surprised: "Sister? Really? Why didn't I find out..."

"Senior brother, you are stupid, I gave you so many opportunities before, if I didn't take the initiative to confess my love later, hey, let's not talk about it..." Han Jiaying paused, and said bitterly:

"Now that you're on a business trip, you abduct another girl. I really don't want to worry about it. You have to kill the signs in the cradle. But don't worry, brother, I'll take care of everything, and you don't have to worry about it."