Chapter 344: How come another such a fierce undergraduate

On Thursday morning, Mo Wenlin took the samples to the Magic City High-speed Railway Station and headed towards the capital.
In the past three days, she has prepared three batches of devices and collected twenty battery devices.
Each battery device is packed in a special small black box, wrapped in a sealed plastic bag, and finally in a glove box, the samples are placed in a sealed metal container filled with nitrogen.
This kind of metal container is similar to the structure of the glove box transfer cabin, with a cylindrical stainless steel cabin in the middle, and stainless steel lids with sealing rubber rings on both sides. The lid and the cabin are fixed by a clamp to achieve a good Air tightness.
Under the three-layer protection, the best device performance can be maintained as much as possible.
Halfway through, an episode happened.
Mo Wenlin came to the subway station of Line 10 and entered the station for security check.
The security inspector is a little brother in his early 20s. He frowned when looking at the images in the computer, and found that the matter was not easy, so he intercepted Mo Wenlin's package and asked to open it for inspection.
Finally, it was found that there was a strange metal object in the bag, which was also wrapped in a plastic bag.
"What is this?" the security inspector asked.
"It's a sample container. I want to send it to the capital for testing." Mo Wenlin smiled awkwardly and chose to tell the truth.
"This is not dangerous, right? Why don't you open it and show it to me." The security inspector asked.
"It's safe, but it can't be turned on because it contains nitrogen. If oxygen air enters after it is turned on, the sample will be damaged." Mo Wenlin explained hurriedly.
The security inspector hesitated for a while, waved his hand and said, "Go in."
After the security check of the train station, Mo Wenlin was not stopped.
On the other hand, Han Jiaying was basically busy with the modification of the jacs article, and it was only a matter of the third-party inspection report from Mo Wenlin.
So, she went to the summer camp for the graduate school and went to the magic city with other students outside the school.
Similar to the summer camp that Xu Qiu participated in last year, this year's summer camp also adopted the mode of playing on the first day and interviewing on the second day.
It's just that Xu Qiu was too lazy to join in the fun at the time, so she didn't go out to play, and unlike the school girl, she liked the fun.
At the same time, Xu Qiu got the 6000 yuan bonus promised by Shenzhen Optoelectronics Company.
Considering the 6,000 yuan bonus, the amount is not small, Xu Qiu went to talk to Teacher Wei.
Wei Xingsi said immediately: "The money will be used as the fund for the team building, you can control it."
Returning to 216, Xu Qiu contacted the sales of Shencheng Optoelectronics Company, "The money has been received, when will the two fluorine-containing dt monomer materials be shipped."
Sales quickly replied: "Both dt monomers have been synthesized and are undergoing purity testing. They can be sent this Friday."
Xu Qiu thought about it. He should be able to get two monomers before the holiday, but there was no chance to synthesize two d-t derivative donors, d-tf and d-tsf.
Originally, he planned to try these two monomers to see if the efficiency of the device can be boosted, but it is enough to have a monomer, and he can synthesize it in a simulation laboratory.
As for the newly accepted am article about itic, Xu Qiu didn't plan to share it with the salesperson. He planned to postpone it for a while before telling the other party when the article was published in the electronic version.
After the general article is accepted by the editor, other researchers will not be able to see it temporarily, because there is a "roof (proofreading step afterwards.
After the proofreading is over, it will take some time before the electronic version is published.
After the electronic version is published, other researchers will be able to read this article online, and some journals will call this status just accepted.
After that, if it is not a pure online journal like nc, it will wait for the paper version to be published.
Only after the paper version is published, the article will have an official volume number, issue number and page number.
It may take more than half a year for a popular journal like am to queue for official publication.
On Friday, Han Jiaying participated in the summer camp interview.
The teachers in charge of the interview are still those familiar faces, Zhou Mathematics, Yu Qiang...
Wei Xingsi didn't come because he felt that even if he couldn't come, Han Jiaying could pass the interview.
Zhou Mathematics is in charge of hosting: "This student, please briefly introduce yourself."
"My name is Han Jiaying, my student number is 1xx... I major in materialization and I have a grade point of 3.22. I am now in Wei Xingsi's research group, mainly engaged in research in the field of organic photovoltaics. I have published four sci articles, one jmca and one acsami. An ees, a cm, and now there is a jacs article. I have just received review comments and are under revision..."
After listening to Han Jiaying’s "simple" self-introduction, the teachers were quiet for more than ten seconds...
The first reaction in my heart is:
"Why is another such a fierce undergraduate, wait, why should I say it again."
"Not accepting such students is simply a loss to the department!"
Now there is competition among universities, as large as the school rankings, for example, can the Mordu Comprehensive University hold the third place in the country, as small as each department and subject must also be ranked, and now what "double first-class" The title.
For these rankings and titles, the main indicators are scientific research results, in other words, they mainly read articles.
Associate professors like Yu Qiang, who rely on years of work and being a counselor, do not have as many high-quality articles as Han Jiaying.
Many ordinary professors who can post an ees can run out and blow up for a year.
Zhou Mathematics broke the embarrassment: "Ah, this classmate has such academic achievements, I won't ask other questions too much, just ask curiously, what is your relationship with Xu Qiu."
Han Jiaying responded with a smile: "Xu Qiu is my senior." Speaking of which, when the research group had a year-end dinner, she even toasted Zhou Mathematics. Unexpectedly, the other party turned her head and forgot her, but it was normal. , After all, he is the director of the teaching and research section...
Zhou Mathematics nodded suddenly, and continued to preside over the interview: "Are there any problems with other teachers?" Although students like Han Jiaying will definitely pass, the process that should be followed still needs to be followed.
Yu Qiang answered: "Simply describe the work of one of your representatives."
Han Jiaying made full preparations in advance and responded: "Take that ees article as an example, I synthesized a 3d-di non-fullerene receptor, breaking and maintaining the world record of di series photoelectric conversion efficiency... "
The graduate interview ended smoothly. The school girl has a lot of academic achievements, and through a weekly group meeting, her performance on the spot is also very good. In the end, she got 99 points in the interview, ranking first in the interview.
In the afternoon, Mo Wenlin heard news that Nim's test report had come out.
Xu Qiu speculated that she should have spent some time, after all, 1-3 working days in the system, usually 3 working days, and special circumstances will be postponed.
After Wei Xingsi remitted 13,500 yuan to Nim Bank, Mo Wenlin got the test report and invoice. After returning the photos of Han Jiaying's h22:itic system in advance, Mo Wenlin took the high-speed rail back to the magic city again.
The test results have a total of four pages. The first two pages are stamped with official seals, which are some general information. The next two pages are specific test results, including test conditions and iv curves, expressed in both Chinese and English. The writing is very good. Detailed, especially there are many exemption clauses: "This data is only valid for the state of the tested sample at the time", "Our institute is only responsible for the complete certificate stamped with the "National Institute of Metrology Calibration Special Seal"", "This certificate is in use It is expressed in two languages ​​in English, and the exact meaning is in Chinese."
The final test result retains three significant digits. The school girl’s h22:itic system has an efficiency of just 10.0%.
Han Jiaying put three or four pages of test results pictures in the "support information" of the jacs article, and the final revised version was uploaded on the website via Teacher Wei.
For the other nine systems, the overall deviation is within 5%.
Chen Wanqing's ce10:-4f system has a detection value higher than the laboratory test value, reaching 12.3%. It can be regarded as breaking the existing efficiency record in the field of organic photovoltaics, and it has made the seniors happy.
July 26th, Monday, the last group meeting before the holiday.
It's relatively simple, mainly people are rushing to write articles recently.
Feifei Wu is also a veteran of writing articles, and in a week, I basically gave the liver the acsami article on the two-dimensional perovskite. It is in the process of finishing and I plan to cast it today.
Duan Yun's acsami article was posted last Sunday.
Tian Qing's work could not be completed before the holidays, so she sent a batch of samples to Feng Shengdong and planned to cooperate in research.
Chen Wanqing’s article was published last Thursday. The target journal am, the highlight is "the first near-infrared non-fullerene receptor". Before her idt-icin system was broken in am, this time she killed it again. .
Xu Qiu published two articles based on it-4f and it-dm's am and angew on Friday. The highlight is "receptor unit modification and high efficiency."
Han Jiaying’s h43:it-4f system has discovered the phenomenon that "small energy level difference can also achieve effective charge transport". If you plan to hit a wave of nc, you need to wait for Feng Shengdong’s data, and there is no time to vote before the holiday. I just have to wait for Xu Qiu's it-4f article to be published. After all, that article is her preliminary work.
Wu Shengnan's fn-4f system article was also posted last Sunday, the target journal jacs, the highlight is "new donor unit, high efficiency".
At the same time, she synthesized six itic derivatives, showing the appearance of being drained.
The device performance of these materials in reality is too late to explore, but Xu Qiu has already obtained the results in the simulation laboratory.
The six non-fullerene receptors, namely itic-th, m-itic, idic, it-2f, it-2cl, and it-m, all use d-t and h22 donor materials as standard samples.
Among them, the first three are optimizations for side chains. Both itic-th and m-itic can improve the performance of the device. Compared with the initial itic, the device efficiency has increased from 10% to 11%. The two articles are preliminary. Get it.
The idic system, UU看书www.uukanshu.com not only improves the efficiency, but also has a unique phenomenon, the ftaz:idic system, about 100nm thin film, the device performance can reach 11.8%, continue to increase the effective layer thickness, preparation For thick-film devices with a thickness of 300 nanometers, the performance of the device can still be maintained above 10%.
As for the reason for this phenomenon, it must be due to the change of the side chain, but how to analyze it specifically, Xu Qiu currently has no other experimental data to support, and it is not easy to make a conclusion.
But anyway, with the highlight of "thick film, high efficiency", an article that goes up from am must not run away.
After all, "thick film" is the pain point of organic photovoltaics. For systems like itic or traditional cm, once a thick film is made, the efficiency will rapidly decay from 10% to 6%, 4%, or even less than 1%.
The latter three are the optimization of a unit, among them, the device performance of it-2f is between itic and it-4f, it-2cl is the same, and the performance of it-m is better than itic and it-dm.
In summary, it-4f is still strong, it-dm can be eliminated and replaced by it-m.
These systems, including the new and the old, Xu Qiu plans to pack them together and post an article later.
Separate development is not impossible, but it is too watery, it is better to post a good post together.
Mo Wenlin h22: The article on itic:cm ternary system has basically been written. The highlight is "the first high-efficiency ternary non-fullerene system". It is planned to be published today. The target journal am is basically relatively stable. .
Xu Qiu guided the writing of Mo Wenlin's essays, coupled with the ternary system that he provided, and finally mixed up a second-ranked co-work.