Chapter 130: shadow

　　Before, Xu Qiu looked forward to the future research direction, with a high probability of working towards non-fullerene systems.
　　 However, it is not very urgent to change directions.
　　 At this stage, we still need to study around PBT4T and its four derivatives.
　　 After all, he is currently a senior, and a student who has just chosen a direct Ph.D. student will have a long time to do research in the future.
　　 When doing scientific research, I often emphasize the integrity and continuity of a system, and it is more taboo to do research with one hammer and one hammer.
　　 This is more obvious in the large research group.
　　Especially for pioneers in a field, the tutors will require their students to make a complete and coherent system in their usual scientific research and final thesis writing.
　　 After all, the reality of scientific research life is not like a novel. You can cross industries at will. Rockets are built today, and nuclear fusion tomorrow.
　　 Every line is like a mountain.
　　 Even if it is a big researcher, most of them are constantly accumulating, digging, and breaking through several sub-categories in a large field.
　　The reason is that the field of scientific research has now tended to the Red Sea, and most of the dividends of scientific research have been divided up by scientists in earlier years.
　　In the era of Newton and Einstein, the scientific research building was initially established, and any discovery can be recorded in history.
　　 is different now, the exploration of scientific research is already approaching the boundary of human cognition.
　　 If you want to make a big breakthrough, you must not only have enough scientific research personnel, but also spend a lot of time on trial and error.
　　 This is somewhat similar to the development of social productivity.
　　 When the productivity reaches a certain level and enters a bottleneck period, it is necessary to popularize education for all and improve the overall quality of all human beings in order to continue to make breakthroughs.
　　……
　　 Next, Xu Qiu began to consider arranging a research direction for Han Jiaying.
　　 At present, his article based on P2FBT4T-2OD has been posted, and he has voted for AM.
　　 The leftovers are:
　　 PBT4T, the original molecule, can publish an article.
　　P2FBT4T series, four molecules with different side chains, can be compared with each other, published an article.
　　 These two articles should be submitted quickly, otherwise they may also be published by other research groups.
　　 P2FBT4T-2OD material, to study the dependence of its crystallization performance on temperature, this article has been booked by the school sister.
　　 After thinking and thinking about the PBT4T-based system, there is no remaining research direction.
　　 The two tasks in front of Shang Shang cannot be directly given to the school girl, because they have basically been completed, and the main experimenter is Xu Qiu.
　　 It would be a bit too much to give her an article.
　　 So, what about the other direction?
　　 At the beginning, he also designed PBT2T, 3T, 5T these directions.
　　 But, will it be too difficult for her to give this direction to a school girl?
　　 Before, just adjusting a side chain would have a very big impact on molecular properties. Xu Qiu encountered many difficulties in the course of the experiment.
　　 After all the hardships, the efficiency was increased from 4% to more than 10%.
　　 If you change the main chain directly now, you will definitely encounter more problems, and it may even be that the resulting molecules are not suitable for photovoltaic materials.
　　 As for the simple direction, it’s easy to think of it, you can imitate the school sister’s way:
　　 Ternary blending effective layer, ternary conjugated polymer...
　　Or go to other side gates, flexible substrates, perovskite transfer layers, translucent electrodes, etc...
　　 After thinking about it for a while, Xu Qiu decided to put the two roads in front of her and let her choose.
　　 He found Han Jiaying and said:
　　 "As for your project, I have two directions here, one is more difficult, the other is simpler..."
　　 Before she finished speaking, Han Jiaying did not hesitate to make a choice:
　　 "I choose the difficult one!"
　　 "Don't you listen to the content specifically?" Xu Qiu asked curiously.
　　 "It's the same to make a choice first, and then listen." Han Jiaying said:
　　 "I also hope that in the future, like my brother, I can post good articles like AM."
　　 was silent for a moment, Xu Qiu said:
　　"Then you can study the systems of PBT2T, 3T, and 5T. You can directly use the system with two fluorine atoms 2F, which may have better performance.
　　 When I finish my work next week, you and I will go to Zhangjiang to study synthesis. "
　　 "Okay." Han Jiaying nodded.
　　 Xu Qiu originally planned to say "We are not the same", but the words came to a stop.
What is the difference between 　　?
　　 are young people with dreams.
　　 On her body, Xu Qiu saw his own shadow, just like when he first entered the scientific research circle, he dared to fight and make great aspirations.
　　 This is good or bad. If you don’t choose the right direction, you may get a blow.
　　 At first, he was so proud, thinking about changing the world, but later discovered how difficult it is.
　　 How insignificant personal power is in the face of the torrent of this great age.
　　 Even if he has a system that is not big or small, even if he can really change the world in the future.
　　 In this process, it is also destined to move forward step by step.
　　 Xu Qiu thought of Chen Wanqing, his leader in scientific research.
　　 Thinking of the self-knowledge of the senior sister, although the dream is an AM, but knowing that her own ability is not enough, so desperately Shui Second District.
　　 In the future, look for opportunities to see if you can realize her dreams.
　　 After all, there is still more than a year. If it goes well, she will graduate. I don't know what path she will choose in the future.
　　……
　　 Weekly group meeting~EbookFREE.me~Wu Feifei previously voted on an article about ammonium chloride additives and voted on CM, but she has not yet returned her opinion. Now she has started a new job.
　　 For traditional lead-based perovskite materials, lead iodide is used, and she chose a pseudo-halogen lead compound, lead thiocyanide, as an additive.
　　 is to add a certain proportion of Pb()2 to the traditional MAPbI3 to form a structure like MAPbIx()3-x.
　　 Now that preliminary progress has been made, the efficiency has exceeded the standard.
　　 Now, the highest efficiency of the perovskite system has exceeded 20%, and it has become an emerging hot field.
　　 Moreover, after Wei Xingsi returned to China, he had just started in this field, and he was the first group of people to enter this field.
　　 For an emerging field with unlimited potential, there are many research directions that can be explored and many articles can be produced.
　　 Wu Feifei, she feels a little standing on the wind.
　　 Of course, her own strength is also placed there, strength and luck are superimposed, and the natural story is born.
　　 If it were not for Xu Qiu's sudden emergence, Feifei Wu must be the brightest person in the research group.
　　 Followed by Tian Qing, she is quite satisfactory, reporting the results of research on charge transport.
　　 The research in this area is relatively small and it is difficult to publish a big article, but it is not difficult to publish a small article in accordance with the hotspot of perovskite.
After 　　 is Duan Yun, he is also out of his head. He just set up the equipment a few days ago and is now testing various standards.
　　 plus Chen Wanqing and Xu Qiu just cast an AM.
　　 All five people have made good progress in the experiment, and the group meeting is rarely peaceful.