Chapter 450: 1 day before Xu Qiuren appeared

On Sunday morning, Feifei Wu received a call from Wei Xingsi.
Wei Xingsi: "Wait for you to pick up Feng Shengdong from the airport. He is already on the plane. It is estimated that I will arrive at Pudong Airport in the magic city at noon today. I have sent you the flight number via WeChat. You can check if the plane is delayed."
Wu Feifei: "Okay, where is the pick-up arrangement? Yanyuan Hotel?"
Wei Xingsi: "Well, yes, Yanyuan Hotel, I have already booked the rooms, so I can just report my name directly."
Wu Feifei: "Oh, good."
At first, Wei Xingsi contacted Feng Shengdong and T?nu from Lund University in Sweden, mainly to make up for the shortcomings in the research group on the mechanism of organic photovoltaics.
But later, Wei Xingsi found that the TAS, TRPL, THz and other test and characterization methods provided by the Swedish side were more compatible with the research of perovskite, so he increased the cooperation between the two parties in the field of perovskite.
At present, almost every perovskite work in the group is done in cooperation with Sweden, and is linked to the corresponding authors of both parties.
And organic photovoltaic articles, such as conventional material development work, are mostly done alone in the team, or with Gong Yuanjiang. Only work involving mechanism explanation will bring Feng Shengdong and the others to "play together."
In addition to Wu Feifei's assignment, Xu Qiu was also summoned to Caiyi 216's office on standby.
At about 9:40 in the morning, Wei Xingsi appeared at door 216, smiled at Xu Qiu, and said, "There will be some teachers coming in advance today. I will trouble you to communicate and discuss with you at that time."
"Okay, no problem." Xu Qiu nodded in response, and he had received the news on Friday.
The teachers who came today basically have a better relationship with Wei Xingsi, so they can maintain the relationship and conduct private academic exchanges.
In the academic circle, academic exchanges between peers are still very important.
Academic papers are one of the most extensive means of academic communication. After hundreds of years of evolution, from the early days when scientists circulated manuscripts to each other, to the publication of paper publications after the establishment of a journal company, and now electronic journals have basically been popularized. .
The overall trend is that the communication between researchers is becoming more and more efficient, and the communication is becoming more and more convenient.
Researchers can learn about the various possibilities in a field by looking at articles published by other people.
However, academic papers are limited in space after all, it is impossible to show all the experimental details, and it is impossible to realize real-time communication between researchers.
In terms of communication efficiency, viewing other people's academic papers is far inferior to direct communication face-to-face.
This is the significance of holding various conferences every year.
Although various conferences are ridiculed as "public-funded tourism" and "bogging scenes by bigwigs", their existence is still very necessary.
In the future, if the scientific research field continues to develop, a better communication model may be born.
For example, we can gather all researchers in the same field, work together, exchange what is needed, communicate in a timely manner, and even gather scientists from all over the world to jointly tackle a certain problem.
It is similar to establishing a huge research institution and integrating all the resources that can be integrated.
Of course, this is a relatively ideal situation, and it is difficult to achieve in reality. After all, everyone has their own interests, and each country has their own interests. It is impossible to unite.
But from the perspective of the entire civilization, only by achieving great unification can development be carried out to the greatest extent.
As internal consumption continues as it is now, human civilization may be shackled to the blue star forever.
"Have you finished reading the literature, come and talk about it?" Wei Xingsi asked.
"It's finished." Xu Qiu responded, then picked up the document and followed Teacher Wei to 218.
"... Ma Weiwei's research group, AEM article, materials purchased from Blue River Optoelectronics, ITIC, and they used toluene as a solvent to spin-coat the effective layer, and at the same time, they conducted stability tests... Xu Zhenghong's research group, NC article, they developed A non-conjugated D unit ITIC-like molecule with high stability... Yan Hu’s research group, AM article, they modified the PCE11 donor material and obtained two wide band gap donor materials. And combined with ITIC2..."
Xu Qiu is eloquently reporting on the literature. Now his method of teaching literature is very different from when he first started.
When he first started, Xu Qiu didn’t have enough understanding of the field of organic photovoltaics. When he talked about the literature, he could not grasp the key points. So he could only use a rough method, that is, take the literature and translate the abstract and conclusions. Look at each picture in turn and speak again.
In this way, it takes three to five minutes for a document to be taught. If you talk about more than a dozen documents at a time, it will take nearly an hour. Each time you talk about a document is a big project.
Now, Xu Qiu understands the meaning of the literature, which is actually to "share the core points of an article with others", and he has the ability to grasp the main points of the article.
Like some small articles, it can be summarized in just one sentence, similar to: "Zhang San made an acceptor material Z3. The structure is based on the improvement of their earlier Z2 material. Combined with PCE10 donor, the device performance is 10.5%. ."
If it is a big article, there will usually be more highlights and the story will be more complicated. Xu Qiu will highlight every highlight and sort out every story line clearly.
If this article is related to what he is currently doing or what he plans to do in the future, he will also talk about how to apply other people's ideas to his own system.
In this way, the time for speaking of a document can be compressed in half a minute, or less than one minute, which greatly saves time.
When Xu Qiu was reporting on documents, Wei Xingsi was not idle either. He sat at his desk and operated the computer.
Soon the printer started working, buzzing.
At first, Xu Qiu thought it was a new document coming out, but after a glance at the printer, he realized that it was the "Nature·Energy" article that was just received by the group, which was typed out by Wei Xingsicai.
Every time the research team publishes an article, Mr. Wei will formally publish the article, that is, after the proof (verification), when the electronic version comes out, the article will be printed out in color and put in the office for reading and checking at any time.
This time is special. This "Nature·Energy" was received on Friday after receiving a notice. The editor has not arranged the edition yet, and the electronic edition has not come out before the proof.
In other words, other researchers cannot find this article on the Internet temporarily.
Xu Qiu didn't know the intention of Teacher Wei to print it out, but he didn't care too much.
As for the articles published by other research groups that are usually read in the group, if it is a general two-zone article, it will be printed in black and white, and if it is a high-end one-zone article, it will be printed in color.
Of course, the premise is that the corresponding article is published in color.
Many journals charge authors for color pictures. If you don't pay, the pictures will be black and white.
According to Xu Qiu's observation, most of the electronic version of the literature PDF files are color images in periodicals owned by ACS and RSC companies.
For Wiley journals, such as AM and AEM, most of the pictures in the electronic version of the literature PDF files are black and white.
Probably because the cost of color pictures is relatively expensive, it is said that a color picture costs a few hundred dollars, and some are even close to 1,000 dollars.
It's a few hundred dollars, not all of them add up to a few hundred dollars. To be honest, the cost is quite exaggerated. It is not an exaggeration to call it a money grab...
Therefore, like review articles published on AM, few people are taken advantage of. Basically, the pictures are black and white.
And review articles will have the author's personal introduction, so every time Xu Qiu reads the AM review, a few black and white headshots are hung in the article, there is always a not very good association...
Fortunately, the two reviews published by Xu Qiu, one ACSEL and one "Joule", were all published in color. He didn't understand the cost, but they should be free or relatively low.
However, the main color of these two journals is green, which looks green, and there is also a not very good association...
After Xu Qiu finished the last article, he was about to leave and returned to 216 standby.
At this time, a knock on the door "Dangdangdang" suddenly came from outside.
Wei Xingsi said in full anger: "Please come in!"
The door was pushed open, and two strange girls walked in.
One of them is about thirty-five years old. He is a little short, only about 1.6 meters tall, and has a very capable temperament.
Xu Qiu compared the list of visitors he had learned before, and speculated that this is probably Wei Xingsi's junior sister, Ma Weiwei.
Another student who looks similar to Xu Qiu's age, looks relatively young and looks a little shy, is probably Ma Weiwei's student, and was brought out to see the world together.
Wei Xingsi greeted him with enthusiasm, waved his hand and said, "Ma Weiwei, you are here, it's very fast."
"As soon as I got off the high-speed rail, I just took the subway and rushed over." Ma Weiwei smiled, and then she reached out her hand generously.
After the two shook hands, Wei Xingsi turned around and pointed at Xu Qiu, and proactively introduced to Ma Weiwei: "This is the pillar of our organic photovoltaic team, Xu Qiu."
"You are young, Brother Wei often mentioned you to me before." Ma Weiwei looked at Xu Qiu up and down, and proactively reached out to him, and the two shook hands.
Ma Weiwei's hand feel is not very soft, and the tactile feedback is very different when she usually grasps the small hands of the school girl.
Xu Qiu couldn't help sighing in his heart: "Years are a pig-killing knife."
Of course, it may also be caused by long-term chemical experiments and exposure to organic solvents. Green pepper scholars of this age will still have to do experiments in the front line.
"This is my student, Hu Yaoyao. I only recruited one master student after returning to China." Ma Weiwei gave a brief introduction, and then under Wei Xingsi's guidance, she and Hu Yaoyao sat down on the reception sofa together.
Wei Xingsi took the initiative to ask: "How is the development now, do you still adapt when you return to China?"
Ma Weiwei said with an "um": "Fortunately, it is necessary to set up a new laboratory even when returning to China, the start-up funds are not much, and the conditions are a bit difficult."
Wei Xingsi smiled and said, "Come slowly, my side is also in the past year or so, and scientific research has only improved."
Ma Weiwei nodded: "Yes, everything is difficult at the beginning."
...
The two chatted awkwardly for a few minutes. Wei Xingsi picked up the hot "Nature·Energy" article from the desk that had just been printed out, handed it to Ma Weiwei, and said with joy:
"You don't know yet, our group's latest article "Nature·Energy" has just been received. The IDIC-4F system made by Xu Qiu has achieved 13.5% device efficiency. At the same time, a very careful theoretical analysis has been carried out... "
"Wow, amazing!" Ma Weiwei exclaimed, took the document from Wei Xingsi, read it, and responded:
"Brother Wei, your development is good after you return to China. It is also a major magazine of "Nature" and a review of "Joule". It is estimated that AM, JACS, and EES have published ten articles."
Wei Xingsi waved his hand and said, "Don't you also have an AEM recently? We were still discussing your article just now."
Ma Weiwei secretly said a coincidence, and then curiously asked: "How is my job, can I still get into the eyes of the two of you?"
Wei Xingsi turned to look at Xu Qiu and motioned for him to answer.
Xu Qiu had to bite the bullet and squeeze out a polite smiling face. After a little thought, he responded: "Ms. Ma Weiwei's article is very good and instructive. We will also use environmentally friendly non-halogen solvents in the future to replace the traditional Chlorobenzene and chloroform solvents."
Although Xu Qiu had complained about Ma Weiwei when he was reading the literature before and they changed "chlorobenzene" to "toluene", and they dared to call it environmentally friendly. See you.
Ma Weiwei smiled and shook her head: "I still know my own articles. Compared with your work, it's not worth mentioning."
After a pause, Ma Weiwei added: "Oh, yes, I feel that this "Nature·Energy" is well written, can I take it back."
Wei Xingsi made an inviting gesture: "Of course it can."
Ma Weiwei rolled up the article and put it in the bag she carried, and then said: "I came here this time mainly to ask Brother Wei for advice on the choice of non-fullerene systems."
Wei Xingsi tentatively asked: "Are you planning to develop a new system by yourself?"
"Yes." Ma Weiwei nodded.
"This idea is correct. If you want to make great progress, you must build a complete system yourself, and then dig deeper." After a pause, Wei Xingsi asked casually: "Well... do you have any preliminary plans? "
Ma Weiwei responded quickly: "I originally planned to do ITIC-related ADA receptor molecules, but later found that there was too much competition in this direction."
"You won't talk about it here. I think that many other big groups have started to follow up, especially Xu Zhenghong, who is about to give up his IDTBR system. Several articles published recently are all about ITIC."
"So, I don't want to squeeze on this track."
"Some time ago, I came up with an experimental idea, mainly based on the previous research on PDI and NDI polymer receptors at NREL in the beautiful country. The specific idea is to polymerize ITIC."
"As a result, not long after this idea came into being, I saw your "Joule" review published by you, and there is this in the outlook section above... so I ran over to ask."
"That's it." Wei Xingsi nodded and understood Ma Weiwei's demands. He was afraid of crashing with the experiment in his group, so he came to find out.
So Wei Xingsi looked at Xu Qiu and asked, "Do you have any plans in this direction?"
Xu Qiu pondered for a while and responded: "I don't plan to do it for the time being... But I think this direction is feasible. It can be specifically like this..."
Ma Weiwei listened very attentively, and interrupted Xu Qiu in the middle, took out a notebook from her bag, and took notes from time to time.
Xu Qiu had already devised an experimental plan for the ITIC series polymer receptors before, and had explored it in the simulation laboratory.
For example, IDIC is polymerized, that is, the ICIN unit on the IDIC end group is replaced with bromine, and then reacted with thiophene substituted with bistrimethyltin to form a structure of "...-IDIC-T-IDIC-T-..." .
The final device efficiency is not low, and can reach more than 11%.
This system, if you work hard, it might not be impossible to post a few articles in one area, and even AM has a chance.
However, the problem with this system is also obvious, that is, it is impossible to modify the terminal groups of ICIN, such as the introduction of chlorine and fluorine atoms.
In other words, if the ITIC series acceptor materials are made into polymers, the room for breakthroughs in efficiency is relatively small, which may increase the stability of the device, which is temporarily leftover work.
Therefore, Xu Qiu did not continue to do it.
Moreover, there is also a shortage of staff in the group. Now everyone has a full load of work, and they can only make choices and give priority to completing those tasks that are more "valuable".
In fact, Xu Qiu wrote a lot of ideas that he had explored and feasible in the outlook section of the "Joule" review, which is equivalent to BONUS, whoever finds it.
Xu Qiu can be regarded as a relatively "conscience" review author.
Many review authors simply summarize the work of others without their own thinking.
Everyone chatted for a while, and it was almost half past eleven.
Wei Xingsi offered an invitation to Ma Weiwei, saying: "Let's have a potluck at noon?"
Ma Weiwei did not refuse either: "Okay."
Xu Qiu didn't plan to follow Cengfan. He estimated that the meeting between Wei Xingsi and Ma Weiwei would not be so "scientific research style" if he and Hu Yaoyao were not present...
"Then I will go first." Xu Qiu retired decisively.
As a result, he retired somewhat slowly, and received a task from Teacher Wei: "Xu Qiu, help receive Ma Weiwei's students."
"Okay." Xu Qiu had no choice but to respond, and took Hu Yaoyao to the cafeteria, choosing a slightly better North District restaurant.
Hu Yaoyao is a relatively quiet type, unlike Mo Wenlin's enthusiasm at the beginning, and does not take the initiative to speak, basically Xu Qiu is introducing.
While chatting, Xu Qiu learned that Ma Weiwei's Ancheng Jiaotong University, like the Magic City University, is a member of C9 colleges and universities.
Hu Yaoyao's undergraduate is a general, and he passed the postgraduate entrance examination and entered the interview before being admitted. Now he is the first year of the master's degree.
In Ma Weiwei's AEM article, Ma Weiwei is basically doing the experiments himself, and Hu Yaoyao is in charge of attacking and learning various experimental skills by the way.
Hu Yaoyao spoke highly of Ma Weiwei, saying: "Her mentor is very good, capable, and very hardworking."
Xu Qiu was not very surprised about this. Basically, few of the girls who can mix with the scientific research circle are sheep.
This refers to the girls who can be professors in science and engineering, basically all of them are fierce.
After eating, Xu Qiu sent Hu Yaoyao back to Yanyuan Hotel, and then returned to the bedroom.
At half past one in the afternoon, Xu Qiu was summoned to Wei Xingsi's office.
He looked at the newly printed "Nature·Energy" article on Teacher Wei's desk, thoughtfully.
Not long after, Mo Wenlin led Gong Yuanjiang into Room 218.
This time, Gong Yuanjiang also brought a student, it was Cao Si, the big brother who took Xu Qiu out to play board games last time.
They are all acquaintances, and the exchanges between them are much more casual, and there is no set of shaking hands.
Gong Yuanjiang smiled and joked: "Mo Wenlin, it's okay to stay here, Teacher Wei and they didn't bully you, right."
"No, no," Mo Wenlin waved her hand hurriedly: "Ms. Wei treated me very well, and the students in the group are also very nice."
However, when he said the second half, Xu Qiu felt Mo Wenlin glanced at him.
Wei Xingsi picked up the "Nature·Energy" article from the table and handed it to Gong Yuanjiang: "The "Nature·Energy" article that I just received this Friday hasn't come out on the Internet yet. Let me show it to you first.
Gong Yuanjiang's smile froze: "You forgot. I am also one of the authors of this article. You called me on Friday..."
"...Haha, I have been too busy these days, I have forgotten it." Wei Xingsi smiled awkwardly and changed the subject abruptly: "By the way, we have made new progress in the experiment now."
Gong Yuanjiang came interested: "Oh? In what way?"
Wei Xingsi looked at Xu Qiu and said: "The development of new materials and laminated devices can just cover the key projects we plan to apply for."
"That's pretty good, how much did you do now, 14%?" Gong Yuanjiang also took a look at Xu Qiu, and understood that this probability is Xu Qiu's credit again.
"The current efficiency is 14%, which is close to 15%, but..." Wei Xingsi said, "Xu Qiu said he is confident that he can achieve 16%!"
"??" Xu Qiu was taken aback, and said inwardly: "When did I tell you that I could achieve 16%? Oh...it seems to have mentioned at the beginning,'I hope 15%, UU reading www.uukanshu.com even 16%', but it's not so certain, okay..."
"Really, this is the rhythm of Nature." Gong Yuanjiang exclaimed, and Cao Si and Mo Wenlin were also a little surprised.
Mo Wenlin is actually okay. She is now almost "superstitious" in Xu Qiu. Others claim that she may not believe it at 16%, but if Xu Qiu said this, it seems to be a fact. There is no doubt about it.
The most emotional one is Cao Si. He has been in the industry for nearly five years and has been working as a small molecule donor system, and the efficiency has been kept within 10% all year round.
This year I finally encountered ITIC-type non-fullerene receptors, and broke the device efficiency of the whole small molecule system to more than 10%. I am very happy to complete an AM.
Now I heard that they are 14%, and they are impacting 15%, 16%...
Why is the gap between people so big?
High-speed text hand typing I have a list of chapters of the scientific research assistance system