Chapter 437: 14% efficiency! Y series materials can be expected in the future

On Monday, a short group meeting.
Wu Feifei's article "Two-dimensional Perovskite Device Based on ITIC Transport Layer" has been written and will be posted on Sunday, the target journal CM.
Next, she is going to do another work, that is, "Introducing ITIC non-fullerene-like stacked devices in two-dimensional perovskites". Now the core experimental data of this work are basically available, and you can take it with you. Two undergraduates do experiments while writing articles for the target journal JMCA.
Duan Yunzu will continue paddling. He received a notice from Exxon Mobil last week that he had not had the first round of interviews. At that time, he was depressed for a long time.
However, he soon received the second round of interview notices from two companies, one is a large manufacturer, Warwick, and the other is a small semiconductor packaging factory in Magic.
In addition, at the Taicheng Vocational and Technical College in his hometown, Duan Yun went back to negotiate last weekend. The two sides reached a preliminary intention, but he is still considering it because from the perspective of personal development, he believes that the magic is relatively relative. Better.
Therefore, although Duan Yun does not have a formal offer, he is not as anxious as he was a while ago. At least from the current situation, it is not difficult to find a well-paid job.
Sun Wo continues to write his ACSAMI article. The current progress is about 80%, and the article is being finalized.
Wei Xingsi asked him abruptly: "After this article is voted out, what are you going to do next? Have you thought about it?"
Sun Wo shook his head weakly and replied: "No."
‘It’s hard to do. Wei Xingsi was silent for a while, and said: "You can discuss it with Feifei Wu, and make sure as soon as possible."
Tian Qing began to study the charge transport mechanism of "three non-fullerene systems with linearly varying HOMO energy levels". She obtained some preliminary CELIV and TOF data through tests, and also sent some samples to Feng Shengdong, Sweden.
Chen Wanqing has further improved the processing technology of "full solution, colorful and translucent devices" at Lanhe. The current device efficiency has reached the highest value from 7.62% to 8.10%, which has reached the standard Xu Qiu wants. Perform repetitive experiments and some other basic characterizations.
This is actually not the credit of the senior sister alone, because Blue River specially assigned her a newly recruited master's degree and a newly recruited undergraduate.
Chen Wanqing is now a Ph.D. In Blue River's team, except for Yang Qin, everyone has a master's degree. If she is officially employed later, she will be the only second PhD, and her status is naturally higher.
Nowadays, the model in many factories is that masters and undergraduates are working, and the Ph.D., as the leader of a group, is watching other people working nearby.
Of course, there is a prerequisite that the team can operate normally, be able to handle various emergencies, and also meet the requirements of the company.
In other words, the team leader must have rich experience, that is, enough previous accumulation to be able to bear the title of team leader.
Otherwise, if it is a Hunzi doctor, it is easy to be discovered if it only has a degree and no skills.
This is also similar to the current scientific research system of colleges and universities. Experienced tutors guide students to do scientific research. Basically, the tutors will not do scientific research by themselves, as long as they have scientific research output.
Xu Qiu reported the following specific synthesis routes and prospects based on laminated devices, PTQ series donors and Y series acceptors.
In the simulation laboratory, the Y series receptors have been iterated three times. According to the latest results today, the newly developed Y3 receptors can stabilize the device performance to more than 14%, and the highest value exceeds the current world record of efficiency in the field of organic photovoltaics. , Once again a big step forward.
Not only that, there is plenty of room for optimization of Y series receptors.
In summary, the future of Y series materials can be expected.
Unfortunately, Xu Qiu can't share this good news with others for the time being.
Han Jiaying’s H5 and J4 donor material’s characterization data has reached 80%, and she is preparing to write articles. School girls will give priority to writing higher-quality J4 jobs, target journal AM, and another H5 job. For the time being, she only intends to post an article like JMCA. 'S little article.
Wu Shengnan mainly wrote articles last week, IHIC and 4TIC, the target journals are JMCA and CM respectively.
Because it is a small article, her writing speed is very fast. IHIC's JMCA article only took a week, the progress has reached 80%, and it is currently being finalized.
Mo Wenlin continued to work on the ternary system, and at the same time talked about the result of the "four-terminal method" laminated device she helped Xu Qiu made last week.
Although this laboratory failed, it is still more meaningful, and some conclusions obtained from it are very enlightening for the subsequent experimental work.
Xu Qiu also added a few views on the preparation of laminated devices.
Finally, the four undergraduates report that their content is relatively brief.
This one says "She learned how to draw with ORGIN last week", the other one says "He learned the EQE test with the school sister last week"...
These are relatively trivial gains, after all, they are beginners.
Generally speaking, they are relatively lucky. They just caught up with the fastest growing time of the research group. In the initial stage of scientific research, they can exceed 99% of undergraduates.
In the afternoon, after Xu Qiu taught Mo Wenlin the transfer layer preparation technology of laminated devices, he went to the Jiangwan campus with Han Jiaying and Wu Shengnan to prepare for the synthesis of PTQ series donors and Y series acceptors.
After the three got off the school bus, they looked around.
Now shared bicycles have been spread across the country, and there are also many yellow and red shared bicycles on the Jiangwan campus.
It may be because the subsidy bonus period has passed. At present, it takes five and a half hours to ride a bicycle or one for one hour. The monthly pass has also been increased from the previous symbolic only 1 yuan to the current 6 yuan or 12 yuan a month. , And also began to collect deposits.
Fortunately, the privilege of riding a yellow shared bicycle without deposit is still reserved for students of Mordu University.
However, only a batch of early registrations are retained. Now, newly registered users, even students from the University of Magic, will have to charge 99 yuan for the deposit of yellow bicycles.
Xu Qiu suggested: "Shall we walk there and exercise?"
The two girls agreed: "Okay~" and "Yes."
The three decided to walk to the Xiancai Building, which is called physical exercise, which is actually saving money.
This is also the habit of domestic people. After prostitution for a long time, they feel that this thing is relatively cheap and should be free. Once the fee is turned on in the future, a large number of people will run away.
Of course, most Internet companies also know this truth, but they still choose to spend money to buy users.
The reason is also very simple. Although the percentage of user loss is not low, as long as we make the user group large enough to cover 1 billion people, even if only 100 million people remain in the end, it is enough for a company to live very well.
It's like "The 1.4 billion people in the country, each give me 1 yuan, I am a billionaire".
[Get the red envelope] The cash or coin red envelope has been issued to your account! Follow the public account on WeChat [Book Friends Base Camp] to receive!
After arriving at Jiangwan, the first stop for the three is the student office 401S.
Before, Wei Xingsi applied to the department to assign Room 401S, a small office in the student office on the fourth floor, to his research group. Later, the department passed this request.
The current appearance of the 401S room in the Jiangwan office is completely different from the appearance Xu Qiu saw before. It is very clean and has a simple decoration, which is more girly.
On the one hand, it may be because Han Jiaying and Wu Shengnan often stay in Jiangwan;
On the other hand, it may also be that the Handan campus is crowded. Everyone has very limited space for personal belongings. They can only put a laptop. So they came to Jiangwan and began to "retaliate arrangement". .
In front of Han Jiaying’s table, there are a lot of equipment she brought from the Internet and the bedroom, including pillows that can be used directly on the table to sleep, the backrest that can be placed in the chair, and various ornaments, etc... …
The layout of the Wu Sheng male table is relatively simple, but it also contains a lot of personal belongings. There is actually a figure of the ever-changing Sakura... Xu Qiu’s first thought is that they all have figures. The second idea is that I can actually play figure.
Now, post-doctorate sisters come to Jiangwan more frequently, even when they are not doing synthesis experiments, they like to run to Jiangwan, claiming to the outside that there is not enough space in Handan.
However, Xu Qiu guessed that she was hiding from Wei Xingsi. After all, under the boss's nose, it was easy to be caught, and then sent to deal with some messy things, or Jiangwan was quiet enough.
The other tables are relatively empty and should be used by two undergraduates who come here occasionally. Speaking of which, Yin Houlang and Xu Xinjie were both at the group meeting this morning, and they all ran away in the afternoon.
Xu Qiu chose a table that was leaning against Han Jiaying and began to discuss with the school sisters to make preparations before the experiment.
He plans to develop the PTQ series of donor materials with his schoolgirls first, and then hand over the system to the schoolgirls when they become proficient.
As for the Y series receptor materials, Xu Qiu intends to be responsible for himself in the future, mainly because Y3 is newly released today, and the corresponding raw materials have not been purchased. The PTQ material synthesis plan has been available for a long time, so the raw materials have been purchased. Can be directly thrown into the reaction for synthesis.
After completing the preparatory work, Xu Qiu and Han Jiaying took the "cheat sheet" with the specific amount of materials and went to the laboratory on the fifth floor.
Today’s target product is the A unit in the PTQ1 material, UU Reading www.uukanshu. There is only one main raw material of com, which is hexasubstituted benzene. The substituents are two fluorine atoms, two bromine atoms, and two amino groups. The positions of the substituents are (4, 5) and (3, 6). And (1, 2) position.
The name is roughly: 3,6-dibromo-4,5-difluorobenzene-1,2-diamine.
The molecular structure looks very complicated. It replaces all the six hydrogen atoms on the benzene ring just like planting rice seedlings, and all six reaction sites are occupied.
Among them, the fluorine atom is used to improve the performance of the final material, the bromine atom is used for the subsequent Stille coupling reaction, and the amino group is used to form 1,4-azabenzene, which is connected to the original benzene ring by means of a condensed ring. Six-membered heterocyclic ring is used to introduce side chains, improve the solubility of materials, and regulate the molecular structure of materials.
Although this material looks complicated, it has commercial resources and can be bought directly, so Xu Qiu doesn't have to work hard to synthesize it by himself.
This is the inheritance of the scientific research circle. The synthesis of every new material is of great significance. The achievements made by some pioneers in the field of chemistry may be useless at the time, but they are used whenever they are not uniform.