I Have a Research Support System

The location of the group meeting on Monday was changed to the large meeting room on the third floor of Caiyi.

This time, several undergraduates also participated together. Including Wei Xingsi, there were a total of 14 people, which seemed mighty.

Wei Xingsi first announced the good news in front of everyone: Congratulations to Chen Wanqing for accepting the AM article. This is a 4,000 yuan bonus.

This is mainly for a few new members of undergraduates, telling them in a way of incentives that as long as they post articles, they will get a bonus.

Although the senior sister's article dragged on for nearly a week, but fortunately, there were no moths in the end.

The senior sister successfully published an AM first author article, which can be regarded as completing an important career task during her doctoral study.

As usual, Wu Feifei was the first to report that her work on the two-dimensional perovskite based on the organic spacer layer of thienylethylamine had been completed, and the article was submitted to the target journal AFM.

Next, she planned to take Yan Hu and Yu Ya to continue to study the two directions discussed with Xu Qiu before.

The work of the ITIC transport layer is relatively easy to do. You only need to do the test characterization according to the standard process. It is currently in progress...

In terms of ideas, this work is somewhat similar to Chen Wanqing's previous use of perovskite materials as transport layers in organic photovoltaic standard samples.

In fact, it is the intersection between different disciplines. Now that ITIC is more popular, let's go to a bright spot.

This is better to post an article, even if you can’t post AM, JACS, it is good to post a CM, JMCA level article.

The key is that the workload is not large, and there is no need to find additional highlights.

If it takes a month to publish a stable article in the weaker area, most researchers are willing, and professors are no exception.

Another work on spin-coating organic photovoltaic systems directly on two-dimensional perovskite. When the organic photovoltaic layer is relatively thick, the performance of the device decreases, which may block the charge transport of the perovskite. When the thickness of the organic layer When thinning, the device performance improves slightly...

Wu Feifei thinks that the organic photovoltaic layer here may play the role of a transport layer, but after all, it is a blended layer with a mixture of donors and acceptors, so it can still be regarded as an effective layer.

How to explain it specifically, she decided to join forces with Feng Shengdong in Sweden to test TAS and see if she could tell a good story.

For an article, excellent performance or nice story must be equal. In other words, even if the performance of the device is poor, as long as the story is well told, it is still possible to publish a good article.

Duan Yun did not report, and with the submission of his last article, he is now in a nearly free state.

Although he is usually sent out occasionally to deal with some school-related matters, the matters related to scientific research work have basically been settled. Now, he only needs to deal with the submitted ACSAMI article, or revise or resubmit it until the article is accepted. until.

Graduate students or postdoctoral fellows generally do not leave jobs that have been submitted but not accepted until they graduate/leave the research group.

Once a small tail is left, it will be more troublesome.

If you don’t deal with it, the article is also considered as “your own child”. If you don’t care about it, others may not help you manage it.

If it is dealt with, without the equipment of the research group, if you want to make up the experiment, you will definitely not be able to make up for it. Besides, everyone is gone, and you have to work for the boss, and you may not be happy in your heart.

Therefore, some students who are about to graduate will sell articles that they have no time to deal with, that is, deliberately submit manuscripts to journals that are not as good as they are, and strive to get the article accepted quickly, so that there is no need to revise or wait.

Duan Yun still has a lot of time, nearly half a year, and he is not in a hurry. For him, the top priority now is to find a job and get an offer.

It's almost November now, and Duan Yun began to respond one after another to the large wave of resumes that Duan Yun sent out.

In addition to ExxonMobil in the first round of testing on Friday, companies such as Dow Chemical and Warwick also sent invitations to Duan Yun for the first round of testing. After all, he is a doctoral student at Shanghai University of Technology, one of the top 5 schools in China. , It is not difficult to pass the resume screening and get the qualifications for the first round of tests.

The difficulty is whether you can enter the second and third rounds that follow.

One of Duan Yun's disadvantages is that he is a bit older, because he has worked for several years after graduating from a master's degree, so he is now in his 30s.

The same doctoral graduates have similar conditions, one is 30+, and the other is around 27 or 28. Unless they are experienced in technical positions, companies will mostly choose younger ones in other cases.

The performance of age discrimination in men is actually not bad. If you are a woman, a female doctor who is about 30 years old, the company may consider many situations:

If you are single, the company will think that you have a personality problem, otherwise why are you still not married? Will you get married after a while, and will you have to ask for marriage leave or maternity leave? Working for a few months and taking a year off?

If you are married and have no children, the company will think that you are going to have a baby soon, and then you will have to take maternity leave? Work the same for a few months and ask for leave for a whole year?

If you are married and have children, the company will think that you have children, do you have to be busy with your family, and can you devote normal energy to your career? Do I spend double the work and end up with only half a person?

This is where the female doctor is more embarrassing.

Of course, senior sister doesn't need to think about these issues. Now that she has basically established a line with Lanhe, the company has Xu Qiu as a shareholder, so it shouldn't go bankrupt immediately.

Sun Wo began to write his first article, about The influence of different processing techniques on the device morphology in the two-dimensional perovskite standard sample system, the target journal ACSAMI, the progress is relatively slow, a week has passed, and only 10% of it has been completed about.

Wei Xingsi was not harsh, but encouraged Sun Wo to keep working hard, because he knew that for novices, the first article is not the time for experimentation, and it takes one or two months to write and revise the article. It's all very normal.

Tian Qing continues to write Exciton Binding Energy and Exciton Diffusion Distance of Multiple Systems. The target journal is ACSEL. The progress of the article is about 70%. , the progress of this week's article is estimated to reach 80%, or more than 90%.

Chen Wanqing began to report: Last week, we mainly prepared semi-transparent devices by full solution method at Blue River, and replaced the PEIE transport layer material, and the device efficiency broke through to 7.17%...

At the same time, we tested and compared the molecular packing structure of films prepared by spin coating or scraping coating of the same effective layer material...

Integrating the data in-plane and out-of-plane, the results show that the (100) and (010) signals of the film obtained by scraping coating are stronger than the signals of the film obtained by spin coating...

It can be explained in this way that scrape coating is a slow moving scraper, and the film is formed naturally. The time used for crystallization in this process is very sufficient, and it is easier to form a highly crystalline film. In the spin coating process, the film is on a high-speed rotating platform. On the other hand, the solvent evaporates, and the film-forming time is very long, which is not conducive to crystallization...

Also, this is the light absorption spectrum...

Seeing that the senior sister only listed the light absorption images of the scrape-coated effective layer film separately, Xu Qiu suggested: You can compare the light absorption spectra of the effective layer films obtained by the two preparation methods of scrape coating and spin coating. I mean put Compare them in the same graph and see if there is any difference.

Chen Wanqing thought for a while, then nodded, Okay, I'll draw them together and compare them.

Well, I speculate that the absorption peak position of the light absorption spectrum of the scraping method may be red-shifted relative to the absorption peak of the spin coating method, and theoretically the peak should be more 'sharp', that is, the half-peak width will be smaller .” Xu Qiu first added a few words, and then changed the subject: “Of course, if the results of the experiment are not like this, then just pretend I didn’t say anything.”

Everyone thought that Xu Qiu's analysis made sense in the first half, but they didn't expect to add such a sentence at the end, and they all laughed.

Xu Qiu's Joule review has been preliminarily written, and is in the process of finishing and revising the article, which is expected to be submitted this week.

There are only two authors of this article, he and Wei Xingsi, and we cannot ask other people to help revise it. Before looking for Teacher Wei, I can only read it a few times by myself.

Han Jiaying completed the synthesis of H5 and J4 materials last week, and made a batch of devices on the weekend, using acceptor materials such as IT-4F and IDIC-4F to match them.

The results show that the device performance of H5 material is about 1% lower than that of H22, while the performance of J4 and J2 has little change. Experimental results in reality.

Among them, for H5 work, there is a high probability that no good articles can be published, and the upper limit is almost the weaker area, or AM sub-journals AFM, Adv. Sci.

For J4, it is hoped that an AM-level article will be published. Although the performance of the device has not been significantly improved, the idea of ​​replacing fluorine atoms with chlorine atoms has solved the problem of difficulty in material synthesis, which is also a great bright spot.

Wu Shengnan's article on IDIC-M has been written and submitted, and the target journal is EES.

In addition, she obtained two new materials, IHIC and 4TIC, both of which were modified with the conjugated structure of the D unit relative to ITIC, aiming to obtain an acceptor that absorbs near-infrared light with a narrow band gap.

The final results are not as expected. The light absorption edges of the two materials are around 900-1000 nanometers, and the performance of the device is quite satisfactory. The combination of the two acceptors and the PCE10 and PCE11 donor materials can achieve a maximum efficiency of more than 10%.

The postdoctoral senior sister plans to develop in the direction of translucent devices in the future. Xu Qiu has helped her pave the way in advance, and the difficulty of exploring the experimental conditions has been greatly reduced.

Mo Wenlin continued to write her third ternary article, the target journal AEM, and the progress is now about 55 percent. Xu Qiu didn't bother her much last week, and her writing speed has also increased.