Chapter 266: Higher mountain

What is a higher mountain?
　　 The answer is obvious, the main journal of "Nature" and even "Nature" and "Science".
　　 Similarly, the difficulty of climbing to the top is obvious, and a major breakthrough must be made. Even if Xu Qiu sits on the system, it is still not so easy to do.
From the second area of ​​the SCI to the first area, although the difficulty of article publication has increased a lot, it only increases linearly. From the top issue of this level to the "Nature" major journal and the S main journal, the difficulty of publishing It is an exponential improvement.
A very simple example, if you can publish an article of "Nature" at the graduate level, after graduation, you can go directly to Oxford, Harvard, Massachusetts, Cambridge and other universities to find a big team to study for two years. Great opportunity to directly introduce talents as "Qingqian", and then go to 985 colleges and universities to become special professors or researchers.
For domestic professors, if they can post an article of "Nature", if other aspects are not hindered, basically a "outstanding youth" hat will be stable. In other words, Xu Qiu published an article in Teacher Wei's group. "Nature", Wei Xingsi, who is still a "Qing Qian" now, will be able to be named "Jie Qing" in a short time. Basically, he doesn't need to use personal connections, and he can make progress while lying down.
　　……
　　 "Senior brother, if you don't want to do it, let's be one," Han Jiaying smiled, "I am on the top, you are below."
　　 "You can drive on any broken road." Xu Qiu raised his hand and tapped on the head of the school girl, but this time he did not refuse again, "Let's do it."
　　 "The other B3T-6 system is also written by the senior brother, how about it?" Han Jiaying suggested again.
　　 "No, I don't need it." Xu Qiu shook his head.
　　 "No, you want it." Han Jiaying insisted.
　　 "You don't want to write an article, do you?" Xu Qiu thought for a moment, suspiciously.
　　 "No, no..." Han Jiaying explained in a panic.
　　 "Huh?" Xu Qiu increased his tone a little.
　　 "There is indeed a part of the reason," Han Jiaying admitted frankly after being exposed: "How boring to write articles, it is still interesting to do experiments, brother, is it possible~"
Xu Qiu thought for a while, nodded in response, "Okay, anyway, the data is complete, and if you vote for ACSAMI, you don't need to write it too seriously. After I vote for the EES in my hand, I will spend a week to finish it. . However, the following is not an example."
　　 "Brother is so nice~" Han Jiaying rubbed Xu Qiu like a coquettish, and said: "The food here is so slow, I have two cans of Coke after more than ten minutes."
　　 "We only had dinner at six, and now it's just past nine..." Xu Qiu vomited.
"Isn't it because I know that there is a midnight snack, so I saved my stomach specially." Han Jiaying explained, paused and said: "By the way, after our 3D-PDI system articles are published, will we continue to try other PDI systems? "
"No need," Xu Qiu said, shook his head: "It is enough that we can publish all the articles we have in this field. After that, unless the efficiency is over 10% or we put forward some new viewpoints, we won't be able to publish more. A good article is at most a weak area like that."
After a pause, Xu Qiu continued to analyze: "At present, I estimate that the upper limit of the PDI system is about 10%, or if I estimate further, it can reach 12% at the top. It is very likely that the fullerene system cannot be surpassed. It is not easy to reach the value of 10%. It is definitely not possible to avoid a lot of material synthesis and device optimization. It requires repeated trial and error. The cost performance is too low. We will not waste this time. It is better to leave this task to our peers and then we Leave energy to a better direction."
　　 "Then we also do the ADA system with the senior sister?" Han Jiaying understood the potential meaning of Xu Qiu's words.
"Yes, next our work will focus on the ADA field," Xu Qiu nodded and explained: "Xu Zhenghong and others just published an article "Nature·Materials", which raised the upper limit of efficiency in the non-fullerene field. At 10%, although in the short term, the threshold for publishing articles is higher, which is particularly detrimental to the seniors, in the long term, the popularity of this field can be hyped up and attract other researchers to study together."
There is indeed a competitive relationship between researchers in the same field, but the more important thing is the cooperative relationship. At the current stage of scientific research, if you want to promote the development of a large field, the power of one person or a research group is not enough Yes, even a big academician needs a group of younger brothers to help.
For example, in the field of organic photovoltaics, some people are responsible for the development of donor materials, some are responsible for the development of acceptor materials, some are responsible for the study of the charge transport mechanism in them, and some people are responsible for researching new transport layer materials to optimize the performance of the device from other levels. To a higher level, or to study roll-to-roll processing, environmentally friendly solvents, large size, flexibility and other technologies related to commercialization, paving the way for the future application of organic photovoltaic devices.
The more researchers, the hotter the field, the hotter the field, the faster the development, and the faster the field develops, more and more newcomers will enter the field, thus forming a virtuous circle; vice versa, unpopular fields, if Without a major breakthrough to break the vicious circle, it will eventually die out; this is also a manifestation of the Matthew effect, where the winner takes all.
　　 "Of course, the most critical reason is that I think the future of organic photovoltaics," Xu Qiu paused, and said seriously: "It's in the non-fullerene field!"
　　 "Brother, do you have any specific research plans?" Han Jiaying asked.
　　 "Are you planning," Xu Qiu touched his head awkwardly, "Is it a plan to respond to changes?"
　　 "Accordingly..." Han Jiaying raised her forehead, "I thought the brother was already ready."
Xu Qiu spread his hands and explained: "The ADA-type non-fullerene receptor field is not like the DI system previously done. There are existing systems for reference, which means that the general direction can be judged, but the specific details It is impossible to know in advance, we and other colleagues need to keep exploring."
　　Han Jiaying curiously said: "Some of the preliminary work of Xu Zhenghong and his group can also be used for reference."
"Well, synthesis methods can be used for reference. After all, many synthesis reactions are of the same type," Xu Qiu said in a turn: "However, there is almost no room for reference in molecular structure design. There is no way. Their previous efficiency data is too low. Most of them are within 5%. To give a very simple example, they did some molecular structure optimization and increased the efficiency from 2% to 3%. This degree of improvement may be caused by experimental errors, or The processing conditions of the devices in the low-efficiency system have not been optimized in place."
　　 "What about the "Nature·Materials" they just published?" Han Jiaying turned into a curious baby.
"Hmm..." Xu Qiu thought for a moment and explained: "Although that work has increased the efficiency to 10%, it is just an isolated case. Apart from providing me with an idea of ​​sandwiching other units between D/A units, and There is not much reference value in other aspects other than the ideas of stability research.
　　 Unless we imitate them and develop IDTBR derivatives, such as changing the side chain on the central D unit, or adding something to "B" and "R"...
　　 But this is not what I want to do. I think it’s better to use the I unit developed by our team, and how did the seniors break the world record of the ADA system? "
　　 "Negative day..." Han Jiaying chuckled, "It's pretty vivid."
Xu Qiu took a sip of ice-cola and said, "Actually, I am not completely unplanned. In general, we will synthesize a series of fullerenes with different band gaps, or light absorption ranges, based on our I unit. The acceptor molecules, then based on these acceptor molecules, according to the principle of complementary light absorption and energy level matching, synthesize a series of matching donor materials..."
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　　 "I understand~" Han Jiaying had a clever idea: "This is called the donor and the recipient two blossoms!"
　　 "What kind of two blooms, it's really easy to cut at the mouth," Xu Qiu retorted, "Obviously it is grasping with both hands, both hands must be hard and easy to cut."
"I haven't finished talking just now," Xu Qiu continued: "My idea is to build a rich donor library and receptor library, pair by pair, get the optimal system, and build a theoretical model for the receptor. After UU read www.uukanshu.com, the concepts of translucent and laminated battery devices can be developed in the past."
　　 "It sounds like a lot of work." Han Jiaying tilted her head.
　　 Xu Qiu said relaxedly: "Come slowly, besides us, there are hundreds of colleagues. However, in the future, it is estimated that it will be a lot of trouble for Teacher Wei to go out PY transactions, and help us find other research groups to get some materials back."
　　 Han Jiaying asked: "Brother, what does PY mean? Is it the one I think?"
　　 Xu Qiu thought for three seconds before explaining: "PY, is it a friend? Read Po Dingpeng, a doctor, a friend, and a friend." (Yin eng, once, meaning horse reins)
　　Han Jiaying's difficult pronunciation: "Poem spray, doctor lotus friend, basin friend~"
　　 "It's not ah, it's a friend, not a friend." Xu Qiu taught patiently.
　　 "Poe, uh, spray friend~" Han Jiaying flushed.
　　 Xu Qiu spread his hands. It turned out that the nasal sounds of the school girl were indistinguishable, and he usually didn't notice it.
　　At this time, the waiter brought two large pots of crayfish and a large bag of disposable gloves, "Your crayfish are here, and the side dishes are underneath."
"I'm finally here, I'm so hungry." Han Jiaying couldn't wait to put on the gloves, felt it, and said: "I always feel like I'm going into the laboratory, but this glove is compared with the disposable PE gloves in the laboratory. , Too thin."
　　 "Cost saving, after all, there is no danger even if the gloves are leaking here." Xu Qiu explained casually.