I Have a Research Support System

Monday, group meeting.

Wu Feifei first reported that her article on "two-dimensional perovskite photovoltaic devices with isobutylamine organic spacer layer" was finishing up, and the efficiency was finally fixed at 8.63%.

Compared with the relatively old fields such as organic photovoltaics, the emerging field of perovskite has one advantage, that is, it is easier to find new highlights. In other words, it is easier to publish short articles in Communication format. Compared with articles in Article format, the word count Less than half, the time spent on the same job will be reduced by 20%-30%.

"The newly purchased constant temperature and humidity box is very easy to use. Under the conditions of 25 degrees Celsius and 60% relative humidity, after 200 hours of storage, the device efficiency can still maintain 80% of the initial value. After hours the efficiency has decayed to 80% of the initial value."

After reporting the stability data, Wu Feifei talked about the results of the light source test last Thursday. The picture looks very beautiful, with many regular sample signal points.

But when Wei Xingsi asked, "How do you analyze the data and what does it show?", Wu Feifei shook her head and said, "I don't know, I'm still reading the literature."

She really doesn't know, because GIWAXS of two-dimensional perovskite materials is her first test, and it may even be the first test in the entire field. Unlike traditional XRD characterization, there is no relevant literature to refer to.

She asked Xu Qiu for advice on Sunday, but Xu Qiu was busy at that time, so he stuffed her with two GIWAXS literature reviews for her to read. I have to talk about it, so I can only bite the bullet.

Wu Feifei and Wei Xingsi stared at each other for a while, and Teacher Wei turned around and asked, "Xu Qiu, can you analyze this data?"

‘Is this going to send me the second work of the article? However, the distance is like a mountain, there is more than enough heart but not enough strength. ’ Xu Qiu murmured in his heart that he is not omnipotent. For new fields, he has to consult a large number of documents before he can understand, which is why he gave Wu Feifei the documents at that time.

"I can't analyze it. It requires a lot of literature review, but..." Xu Qiu changed the subject: "I think I can ask Mr. Qiu Zhiquan from Jiaotong University in Shanghai, he is an expert in the GIWAXS industry." Xu Qiu remembered During the dinner on New Year's Day, Mr. Wei invited Qiu Zhiquan, but the other party did not come because of something, so they must have some friendship.

Wei Xingsi rubbed his chin, turned his eyes to Xu Qiu and Wu Feifei for a while, and said, "You guys try again, if it really doesn't work, I'll contact Qiu Zhiquan again."

"Okay." Wu Feifei and Xu Qiu nodded in response.

Xu Qiu could tell that Teacher Wei was not willing to let Qiu Zhiquan get involved. Although the other party would most likely not refuse to help, he would have to pay a price for asking others to help, usually by hanging up on the other party's communication.

In fact, Wei Xingsi does not reject cooperation with other people, but it must be a necessary cooperation. Before cooperating with Tang Yunkun, he took other people's funds, and cooperating with Feng Shengdong because they have scarce instruments like TAS. In the future, he may also cooperate with Gong Yuanjiang, because I used a heated glue dispenser from others, but it is not necessary to cooperate with Qiu Zhiquan now. After all, the light source test is done by myself. It is not worthwhile to send a newsletter just to let others analyze the data. .

Duan Yun received the newly sent nickel nanowires last week, and carried out two tasks at the same time to prepare thermoelectric devices based on "one- and two-dimensional material doping" and "nickel nanowire doping", and obtained some experimental data, but the results It is quite satisfactory, and there is no possibility of making a big article.

Teacher Wei asked him to hold back to see if he could make a breakthrough.

Speaking of it, Duan Yun has two Small and one ACSAMI, both of which are journals with an impact factor of about 8 in the major category of the first zone and the small category of the second zone. Graduation standards are met, so one of the two jobs at hand will be able to graduate smoothly.

Tian Qing is still writing a review of Chem. Soc. Rev., and occasionally she and Feng Shengdong can be heard talking on voice calls in the office.

Chen Wanqing stayed in Handan to make devices last week in order to "dispel the smell of organic solvents on her body". At present, she has successfully optimized the efficiency of devices based on the IDT-T-ICIN system to 6.0%.

This week, she didn't have the "True Fragrance of the Second District", so she chose to write the article directly, but planned to continue the synthesis and further optimize the molecular structure.

There are two target products, namely IDT-T(EH)-ICIN and IDT-T(6)-ICIN. Both structures introduce alkyl side chains on the thiophene unit of the original structure, and one is dendritic 2-Ethylhexyl (EH), the other is straight-chain n-hexyl (6).

She did not choose to introduce heteroatoms such as oxygen, sulfur, and fluorine for the time being. On the one hand, the difficulty of synthesis will increase a lot, and on the other hand, the span of the molecular structure will be larger, and the road still needs to be taken step by step.

Hearing this news, Wei Xingsi was quite happy. Now the articles in the first and second sections of the group are published frequently. After returning to China, he has accumulated enough articles. What is lacking is high-quality articles and masterpieces.

In other words, for Wei Xingsi, if he wants to continue to improve, it is of little significance to go to the second district to irrigate water, so he hopes that the students will "hold back their big moves" and publish more articles on the top journals of the first district such as NC, AM, and EES .

Xu Qiu had been dealing with chores other than the experiment last week, so he didn't prepare for the PPT meeting.

Han Jiaying reported the characterization data of the H1x system she synthesized, the article was written according to the ACS template, and she planned to submit to CM.

Wu Shengnan is still in charge of her three aspects of work:

One is the writing of the review of perovskite quantum dots, which is progressing steadily;

The second is the preparation of perovskite quantum dots. She successfully synthesized the material of the standard system by imitating the literature through the thermal injection method. Next, she plans to extend this method to other systems to synthesize new perovskite quantum dots Material;

The third is about the characterization of two electroluminescent color materials P(TPACO) and P(TCEC). The results show that P(TPACO) has better performance and faster fluorescence response speed, only 0.19 seconds, and the latter P( TCEC) was 0.92 seconds.

Therefore, Wu Shengnan focused on the study of the P(TPACO) system, and used the method of taking pictures to study the color change of the sample film under the irradiation of visible light or ultraviolet light, and applied voltages of 0, 1.0, 1.1, and 1.2 volts. There are a total of eight photos.

Under visible light, as the applied voltage increases from 0 to 1.2 volts, the color of the sample film will change from light green to light orange, then gray-green, and finally blue-green.

Under ultraviolet light, the color of the substrate is initially bright green fluorescence, and then the photos of the applied voltage all appear dark green to black.

This kind of material is quite magical. Xu Qiu's first thought was a color-changing film sticker, which can be pasted on the glass as a decoration.

But after thinking about it, there are ultraviolet rays in the sun. If the sun is particularly bright on a certain day, there will be green light rippling on the glass, it will feel weird...

After Wu Shengnan finished his report, Wei Xingsi glanced around the crowd and said, "Anyone else have anything else to say? We'll end without us..."

"I have." Xu Qiu raised his hand.

He had an idea just now and felt that he could talk about the defense PPT at the group meeting, as a rehearsal in advance, and he had no time to do experiments a while ago, so his presence at the group meeting was a bit low, so it was time for a wave of presence up.

Wei Xingsi didn't stop him, and signaled Xu Qiu to start directly.

Then, everyone saw Xu Qiu take out more than 50 pages of defense PPT, and they were all shocked...

Start debriefing.

Xu Qiu's speech was fast, and he only focused on the main points. Many unimportant representations and pictures were left for a few seconds before turning the page.

The school girl was helping pinch the stopwatch.

In the end, Xu Qiu still spoke for 14 minutes and 37 seconds, which was a lot overtime.

After listening to it, Wei Xingsi made an overall comment, "There is no major problem with the PPT, and it looks pretty good", and then gave a suggestion: "In other cases, you can choose the work focus of the AM and talk about it. The next three tasks can be given to the review experts for a while to show that you have still done these tasks."

Xu Qiu pondered for a while, then nodded and accepted Teacher Wei's suggestion.

Sure enough, the tutor is still useful.