Chapter 286: Sure enough, the tutor is still useful

On Monday, the group meeting.
Wu Feifei first reported that her article on "Isobutylamine Organic Spacer Two-dimensional Perovskite Photovoltaic Devices" has been finalized, and the efficiency is finally fixed at 8.63%.
Compared with the relatively old field of organic photovoltaics, the emerging field of perovskite has one advantage. It is easier to find new bright spots. In other words, it is easier to publish short articles in the format of articles, which has fewer words than articles in Article format. For a fraction of the time, the time spent on the same job will be reduced by 20%-30%.
"The newly bought constant temperature and humidity box is very easy to use. When stored for 200 hours under the conditions of 25 degrees Celsius and 60% relative humidity, the device efficiency can still maintain 80% of the initial value, while the three-dimensional perovskite MAPbI3 standard sample is stored for 2 After hours the efficiency has decayed to 80% of the initial value."
After reporting the stability data, Feifei Wu talked about the results of the light source test last Thursday. The picture looked very beautiful, with many regular sample signal points.
But when Wei Xingsi asked "How does this data analyze 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 the GIWAXS of the two-dimensional perovskite material 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 she stuffed her two GIWAXS literature reviews for her to read. She couldn’t finish it for a while, but the group meeting again I have to talk about it, I can only bite the bullet.
Wu Feifei and Wei Xingsi stared at them for a while. Teacher Wei turned around and asked, "Xu Qiu, can you analyze this data?"
‘Is this to send me the second article? How can I be separated like a mountain, I have more than my heart but my strength is insufficient. 'Xu Qiu muttered in his heart, he is not omnipotent. For new fields, he has to consult a large amount of literature before he can understand it. This is also the reason why he gave Wu Feifei the literature at that time.
"I can't analyze it. This requires a lot of literature, but..." Xu Qiu said, "I think I can ask Mr. Qiu Zhiquan from Magic Capital Jiaotong University. He is an expert in the industry of GIWAXS." Xu Qiu remembers At the New Year's Day dinner, Teacher Wei invited Qiu Zhiquan, but the other party did not come over because of something. They wanted to come and they had some friendship.
Wei Xingsi touched his chin, turned his eyes on Xu Qiu and Wu Feifei for a while, and said, "Try again. If it doesn't work, I will contact Qiu Zhiquan."
"Okay." Wu Feifei and Xu Qiu nodded in response.
Xu Qiu could see that Teacher Wei was reluctant to let Qiu Zhiquan come in. Although the other party would not refuse to help, there is a price to pay for asking others to help. Generally, the communication of the other party must be hung up.
In fact, Wei Xingsi does not exclude cooperation with other people, but there must be necessary cooperation. The previous cooperation with Tang Yunkun took other people’s funds. The cooperation with Feng Shengdong was because they had a scarce instrument like TAS. Later, they may also cooperate with Gong Yuanjiang. I used a heated glue spreader, but now it is not necessary to cooperate with Qiu Zhiquan. After all, the light source test is tested by myself. If you only let others analyze the data, you have to send a newsletter. It is not worth thinking about. .
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Duan Yun received the newly sent nickel nanowires last week and performed 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 Fairly satisfactory, there is no possibility of a big article.
Teacher Wei asked him to hold back again to see if he could make a breakthrough.
Speaking of which, Duan Yun has two small articles, an ACSAMI, both of which are journals with an impact factor of about 8 in the first district and the second district. Even if all of them are counted in the second district, one more article is enough for the research group. The graduation standard is set, so if you have two jobs at hand, you can easily graduate.
Tian Qing is still writing a review, and occasionally I can hear her and Feng Shengdong talking on the phone in the office.
In order to "disperse organic solvents", Chen Wanqing mainly stayed in Handan last week to make devices. At present, the efficiency of devices based on the IDT-T-ICIN system has been successfully optimized to 6.0% by her.
This week, she didn't have the "Second District" and chose to write the article directly. Instead, she plans to continue to do synthesis and further optimize the molecular structure.
There are two target products, IDT-T(EH)-ICIN and IDT-T(6)-ICIN. Both of these structures introduce alkyl side chains on the thiophene unit of the original structure, one is dendritic 2-Ethylhexyl (EH), the other is straight-chain n-hexyl (6).
She has not chosen to introduce heteroatoms such as oxygen, sulfur, and fluorine. On the one hand, the difficulty of synthesis will increase a lot, and on the other hand, the molecular structure of this method has a larger span, and the road still has to be taken step by step.
Hearing this news, Wei Xingsi was very happy. Now the articles in the first and second districts of the group are published frequently. After returning to China, he has already accumulated enough articles. What is lacking is high-quality articles and masterpieces.
In other words, for Wei Xingsi, if he wants to continue to make progress, it doesn't make much sense to irrigate in the second district. Therefore, he is eager for the students to "hold up the big move" and publish more articles in the top journals such as NC, AM and EES. .
Xu Qiu had been dealing with chores outside of the experiment last week, so he was not prepared to organize a PPT.
Han Jiaying reported the characterization data of the H1x system she synthesized. The article was written in accordance with the ACS template and plans to vote for CM.
Wu Shengnan is still responsible for three aspects of her work:
One is the writing of a review of perovskite quantum dots, which is proceeding steadily;
The second is the preparation of perovskite quantum dots. She succeeded in synthesizing the standard system of materials through the thermal injection method and imitating the literature. 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 materials P() and P(TCEC). The results show that P() has better performance and faster fluorescence response speed, which is only 0.19 seconds, the latter P(TCEC) Is 0.92 seconds.
Therefore, Wu Shengnan focused on researching the P() system, using the method of photographing to study the changes in the color of the sample film under visible light or ultraviolet light, and applying voltages of 0, 1.0, 1.1, and 1.2 volts. A total of eight photos were taken.
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 to gray-green, and finally blue-green.
Under ultraviolet light, the color of the substrate was initially bright green fluorescence, and then the photos of the applied voltage showed a dark green bias towards black.
This kind of material is quite magical. Xu Qiu's first idea was a color-changing film sticker, which can be pasted on the glass as a decoration.
But on second thought, there are ultraviolet rays in the sun. If the sun is exceptionally big one day, and the glass is shining with green light, it will feel strange...
After Wu Shengnan's report was completed, Wei Xingsi glanced at the crowd and said, "Does anyone have anything else to talk about? Without us, we will end up..."
"I have." Xu Qiu raised his hand.
He had a brainstorm just now and felt that he could talk about the defense PPT at the group meeting. It was a rehearsal in advance, and there was no time to experiment some time ago. The presence at the group meeting was a bit low. It is time to brush up on the presence. Up.
Wei Xingsi did not stop ~EbookFREE.me~ and signaled Xu Qiu to start directly.
Then, everyone saw Xu Qiu's more than 50 pages of defense PPT, and they were all shocked...
Start reporting.
Xu Qiu's speech is fast, and only the key points are emphasized. Many unimportant characterization pictures turn the page directly after staying for a few seconds.
The school girl helped to pinch the stopwatch.
In the end, Xu Qiu still talked for 14 minutes and 37 seconds, which was a lot of time out.
After listening to Wei Xingsi, he first overall commented, "The PPT does not have any major problems, it looks very good", and then gave a suggestion: "At the time, you can choose the focus of the AM work. The next three tasks can be passed over to the review experts for a while, indicating that you have done these tasks."
Xu Qiu pondered for a while, then nodded and accepted Teacher Wei's suggestion.
Sure enough, the tutor is still useful.