Chapter 69: Group meeting

　　 Monday, 9:20 am, laboratory.
　　 It is said that there will be a group meeting today. Xu Qiu has not participated in it before, so he is a little curious:
　　 "Senior sister, what will the team look like?"
　　 "It means literally, the members of the research group got together for a meeting," Chen Wanqing replied while operating the computer:
　　 "Everyone should report on the progress of the recent experiment or the next scientific research plan. Anyway, the last thing I want to do every week is to participate in the group meeting."
　　 "Why?"
　　 "You'll find out later."
　　 Not long after, Teacher Wei came.
　　 He was at door 216, looked inside, and said:
　　 "Come here all, start a group meeting."
　　 Chen Wanqing and Wu Feifei both picked up the USB flash drive, experiment notebook and pen. Xu Qiu also picked up the notebook from the table and followed them to 218.
　　 After entering the door, Teacher Wei sat at his desk and pointed in the direction of the big computer.
　　 Wu Feifei understood, found the remote control of the projector from the table and turned on the projector.
　　 A white curtain fell slowly on the wall opposite the big computer.
　　Because they were all installed on the ceiling, Xu Qiu hadn't noticed when he visited the office several times before.
　　 Everyone sat down and sat in a row near the big computer.
　　 Wei Xingsi looked at his students, but did not find Tian Qing, so he asked:
　　 "Where is Tian Qing, haven't you come back yet, Feifei Wu, have you notified her when to start work?"
　　 "I told her the time before the holiday, and then I asked her yesterday. She said that she is still in the neon country and will come next week." Wu Feifei said.
　　 "She won't ask me for a leave, whatever, just leave her alone." After Teacher Wei finished speaking, he took out a bulging envelope from the drawer, got up and handed it to Wu Feifei.
　　 "Let’s congratulate Feifei Wu for publishing a review on EES."
　　 Wu Feifei smiled and took the envelope, and then clamped it in her experiment notebook.
　　 Teacher Wei took the lead in applauding, and the others applauded.
　　 "Others should also cheer and post articles." Teacher Wei said:
　　 "Okay, let's start the group meeting, which one of you will talk about first."
　　 Seeing that no one took the initiative to stand up, Teacher Wei called by name: "Wu Feifei, you come first."
　　 Wu Feifei got up, inserted the U disk into the big computer, turned on the PPT, switched to the projection mode, and began to introduce:
　　 "This is what I am doing recently, adding ammonium chloride additive to the MAPbI3 system, and it is still testing conditions, and the efficiency is not as high as the standard."
　　 "It's okay, is there anything else?" Teacher Wei said.
　　 "No more." Wu Feifei said.
　　 "How about you Duan Yun, how is the equipment set up, when will it be ready?" Teacher Wei said.
　　 "How can it be so fast? It took a year for a few people from Ji Zhou Dagang to build it. I will try my best to get it right this semester.
　　 Now I am making a sample table, and I need to build a few stainless steel parts. I asked my brother. He can do it. The price is more than two thousand. Do you think it? "
　　 "Let's ask your brother to do it. Two thousand is not expensive." After Mr. Wei finished speaking, he added:
　　"You should prepare with both hands. I think you can do the work of copper-doped quaternary copper-based sulfide at the same time, do synthesis in Zhangjiang, and then go to the same base test.
　　 In case your equipment here has not been properly set up, there is still an insurance policy over there, maybe you can publish an article, right? "
　　 "Hmm, okay." Duan Yun nodded.
　　 "Chen Wanqing, Xu Qiu, do you have anything to report."
　　 Chen Wanqing inserted the U disk and opened her PPT.
　　 Xu Qiu took a closer look at the content of the senior sister, which is exactly what he has done these days.
　　 No wonder the senior sister asked him for data last night, because it turned out to be preparing for the group meeting.
　　 Chen Wanqing operated the page-turning laser pointer while reporting:
　　 "I will mainly talk about the work Xu Qiu has done in the past few days. He has made four perovskite transport layer materials and used them in organic photovoltaic devices. The best one is FAPbCl3."
　　"This is its light absorption spectrum. It can be seen that its light absorption range is basically within 400 nanometers, so it hardly absorbs visible light."
　　 "Well, continue." Teacher Wei nodded.
　　 "This is a diagram of the energy level structure measured by CV, and its band gap is about 3.0 electron volts."
　　 "Well, go ahead."
　　 "This is the J-V characteristic curve. The following table is the photoelectric performance parameter. The best is FAPbCl3, followed by PEDOT standard sample, and again is MAPbCl3."
　　 "Is it possible to improve the efficiency of 10.46%?" Wei Xingsi asked.
　　 Chen Wanqing looked at Xu Qiu.
　　 "I think it is unlikely, after all, it is just the transmission layer material." Xu Qiu said.
　　 "Okay, this value is enough, and then do a few more batches to see how repeatability is, is there any more?" Teacher Wei said.
　　 "Finally there are EQE and CELIV curves."
　　 "Well, there is nothing else?"
　　 "No more."
　　 "Xu Qiu, do you have anything to report?"
　　 Xu Qiu shook his head.
　　 "You can try to give a lecture in the future, and share with us the documents you read. The main purpose is to cultivate your speaking ability. After all, there will always be a report in the future." Teacher Wei said.
　　 "Okay." Xu Qiu responded.
　　 "By the way, you have written CoverLetter," Teacher Wei said:
　　 "Take it over and we voted for the article, Chen Wanqing, you also stay, and the others can go back.
　　 Wu Feifei remember to order takeaway, UU Reading www.uukanshu.com, you can eat together at noon, I will not eat with you. "
　　……
　　 It took the three of us more than half an hour to cast Xu Qiu's article.
　　 "By the way, what materials do you plan to synthesize, do you have ideas?" Teacher Wei said.
　　 "Let’s make the donor materials first, there is no specific idea yet," Chen Wanqing said:
　　 "I will discuss with Xu Qiu this week, and the team will make a report next week."
　　 "Okay, if you design any molecule, you can go to the big computer here and use the DFT simulation software to simulate it first." Teacher Wei said.
　　…………
　　 The two returned to 216.
　　 "Senior sister, the group club seems not as scary as you said before." Xu Qiu said.
　　 "That's because this is the first week and will be opened once a week from now on," Chen Wanqing said:
　　 "If there is no data, or if you can't produce results for a long time, you will understand what it means to be in dire straits."
　　 "Well, what if there is no experimental inspiration, or no research direction." Xu Qiu said.
　　 "If you really can't think of anything to study, you can ask Teacher Wei, and he will arrange specific experimental directions for you.
　　Including any problems encountered in the experiments that you can't solve by yourself, you can talk to him, and he will give you suggestions from his perspective.
　　 However, scientific research mainly depends on yourself, and the tutor can only give you resources and platforms.
　　 Of course, the situation of different types of research groups is not the same.
　　 Because there are few students in the small research group, if the tutor is in charge, it can learn a lot, but relatively speaking, there are fewer scientific research resources;
　　 There are many scientific research resources for large research groups, but the big bosses are usually very busy. Basically, even the students don’t recognize them, let alone personal guidance. "