I Have a Research Support System

After Wu Feifei finished her speech, she walked to the desk next to Teacher Wei and began to staple documents with a stapler, making "thump" and "thump" sounds.

Wei Xingsi put on a serious face, and said to Duan Yun in a deep voice, "Duan Yun, tell me."

Duan Yun got up and said without any haste: "Last week I tried a PVDF-based thermoelectric device with nickel nanowires, but the effect was not very good. I guess it is a problem with the raw material of nickel nanowires, which may have agglomerated or Not well dispersed."

For example, the medicines and reagents in the laboratory are basically bought from other reagent manufacturers or material companies, which cannot guarantee a 100% yield rate, and occasionally problems may occur, affecting the normal progress of the experiment.

As far as the field of organic photovoltaics is concerned, the quality of photoelectric materials provided by the Shenzhen-based company that Xu Qiu and the others are cooperating with has always been quite good. In terms of small molecule synthesis, polymerization reactions, and monomer raw materials, there have only been two cases in total. For the second problem, the other party sent a batch of new materials directly; as for the polymer materials purchased directly, there was no problem once.

Because the company in Shencheng itself has a large-scale organic synthesis laboratory, as well as a photovoltaic device processing laboratory, including necessary equipment such as glove boxes, simulated solar light sources, high-precision source meters, and simulation test software. Teacher Wei's two laboratories are poor.

At the same time, there are more than a dozen undergraduates, masters, and doctors in related fields working in it. After each large-scale synthesis, they will first test the performance of the material in their own optoelectronic laboratory, and only sell it after passing the test. Therefore, good products rate remains very high.

In fact, they have the ability to develop new materials, but they do not do independent research and development. They usually search the latest published articles to analyze which materials may be used in large quantities, and then synthesize them, actively promote them and find research groups to cooperate and sell them for money; or accept For the customization of the research group, like when Xu Qiu was working on the PCE11 system, Yan Hu and his research group customized a batch of raw materials, which helped Xu Qiu a lot.

After hearing the results reported by Duan Yun, Wei Xingsi remained silent and stared at Duan Yun.

Not to be outdone, Duan Yun and Teacher Wei looked at each other. If this scene was placed in an anime, there would probably be a special arc effect between the two's eyeballs.

Next to it was Wu Feifei who was still binding documents with a stapler, making "thump" and "thump" sounds from time to time.

Because she was behind Teacher Wei, she had no scruples and made two faces in the direction of Xu Qiu and Han Jiaying, making Xu Qiu almost laugh.

After half a minute, Wei Xingsi sighed softly and said, "Duan Yun, go to the manufacturer and ask what's going on."

"Well," Duan Yun responded as if nothing happened just now: "We have to wait for them to go to work tomorrow, and it is estimated that we have to send the remaining nanowires back to the manufacturer, and then wait for them to issue a test report. We can't do it for the time being. the system."

"All right, all right," Wei Xingsi leaned back on the seat back, let out another breath, raised his hands, shook them twice, and said, "Then do you have any other experimental ideas?"

"Yes!" Duan Yun nodded his head heavily, and then said calmly: "I plan to add single-wall/multi-wall carbon nanotubes and graphene to the organic matrix material PVDF to explore the introduction of one- and two-dimensional materials. The influence of performance, the material laboratory has it, and it has been bought before."

"The idea is not bad, so let's do it first." Wei Xingsi's face softened a little, and after thinking for a while, he made another suggestion: "We can expand the types of one- and two-dimensional nanomaterials, such as silver nanowires, Silver nanosheets."

Without waiting for Duan Yun's reply, Wei Xingsi turned his head to look at Tian Qing, calmed down his expression, and said, "Tian Qing, you submitted a review proposal last week. This week, you should read the literature and write the article."

"But it's still a plan now..." Tian Qing hesitated, implying that she would write a summary in advance. If the plan was submitted and rejected, wouldn't it be a waste of time.

"Don't worry about this," Wei Xingsi said confidently, "'Research on the Mechanism of Perovskite Photovoltaics' is still a popular direction, even if the editor of Chem. Come out, you can also submit to other journals."

"Okay." Tian Qing nodded in response.

Wei Xingsi looked at Sun Wo again.

Sun Wo stood up and said, "Last week, I was helping Wu Feifei prepare a two-dimensional perovskite device, and at the same time I was writing my graduation project."

"Oh," Teacher Wei asked casually, "Then I will help you correct your graduation project, or Teacher Fang will help you correct it."

Sun Wo is an undergraduate student who came from the fourth year of graduate school, but he is not a joint training through formal channels. The final graduation project and graduation defense are all carried out at the undergraduate school.

And the tutor named at his undergraduate school is Mr. Fang, and because Mr. Fang and Mr. Wei are close friends, he was sent here in advance.

Sun Wo is regarded as a "black household" at the Shanghai Comprehensive University. If he had a safety accident in the laboratory, it would have a great impact on Teacher Wei. Therefore, Teacher Wei did not dare to send him to Zhangjiang for experiments. Instead, it stayed under the nose.

"Teacher Fang asked you to help me correct it." Sun Wo replied.

"Okay, when the graduation project is finished, you can show Wu Feifei first." After finishing speaking, Wei Xingsi turned around and asked, "Wu Feifei, have you ordered your documents yet?"

"It's all bound." Wu Feifei shook the thick stack of documents in her hand.

"Then you take all of them, and then divide them among organic, perovskite, and thermoelectric." Wei Xingsi said.

Then came Chen Wanqing's report: "In the morning, I, Xu Qiu, and Han Jiaying discussed it, and plan to make a non-fullerene acceptor material based on the IDT-ICIN structure. There are four feasible optimization routes, which are..."

"...My plan is to choose the fourth path first, which is to imitate the method of the literature in "Nature Materials". I named this A-D-A variant structure A-π-D-π-A structure, Among them, π represents the conjugated unit, including both the D unit and the A unit. The first-generation molecular structure I plan to develop is tentatively designated as IDT-2BT-2ICIN, and this is my synthetic route..."

"Okay." Wei Xingsi was more satisfied, and said with a smile: "When did you come here in the morning, why didn't I meet you?"

Chen Wanqing explained: "When we came here, there were Wu Feifei and Wu Shengnan in the laboratory. In order not to disturb them, we went to the small conference room on the third floor to discuss."

After the senior sister finished speaking, Xu Qiu and Teacher Wei exchanged questions and answers:

"Xu Qiu, when will you submit your graduation project?"

"May 21st, which is next Friday."

"What about the defense?"

"At the beginning of June, the specific time has not yet been determined."

"Okay, show me the graduation project after you finish writing it. Do you have any arrangements for this period of time?"

"I plan to finish Han Jiaying's B3T-6 series of articles first, and then do my graduation project and prepare for my defense, because there may be more things to do near the graduation school, so I plan to stay here in Handan and help them make devices." "

"Oh, I almost forgot that 3D-PDI still has an article that I haven't submitted to." Wei Xingsi paused and asked, "Why don't you plan to continue developing the PDI system? I think the efficiency can be increased by 10%."

"I also think that the 3D-PDI system has a 10% chance," Xu Qiu nodded first, and then changed the topic: "But it may take a lot of time to optimize materials and devices. Relatively speaking, the ADA type Non-fullerene acceptor molecules are more promising."

"That's true," Wei Xingsi echoed, "Okay, you plan to build the ADA system, I support you, you can ask for anything."

Xu Qiu took advantage of the situation and suggested: "Han Jiaying may need to buy some monomer materials." After speaking, he patted the junior girl on the shoulder and signaled her to start reporting.

"Han Jiaying, come here," Wei Xingsi smiled, "I'll see if you have any other ideas."

During the break at noon, the school girl designed several synthesis routes of donor materials according to Xu Qiu's idea and compared with the product catalog of the optoelectronic company in Shencheng. The feeling that the materials can be bought directly is very comfortable.

Facing the projection screen, Han Jiaying said: "I plan to synthesize two types of wide-bandgap polymer donor materials, one of which is based on FTAZ materials, the D unit is a BDT structure, and the A unit is an FTAZ structure. The focus is on optimizing the BDT structure. side chains, and the introduction of heteroatoms...

The other is based on PBDB-T, the D unit is also a BDT structure, and the A unit is a BDD. The optimization idea is similar to the first one, and the purpose is to change the structure of the conjugated main chain as little as possible..."

Xu Qiu interjected at the right time: "I think that in recent years, in terms of structural units, the research on donor materials has been very sufficient. Many existing units can be directly used, and there is no need to be too innovative for the time being. The idea can be To be conservative, just use existing wide bandgap materials for modification.

Wei Xingsi thought for a while, nodded and said, "I agree, just buy whatever monomer you need."

Afterwards, Teacher Wei said, "Finally, let our new postdoc talk about it."

I don't know if it's because of nervousness, or because it's the first time to use the big computer here. Wu Shengnan couldn't find the hole for inserting the USB flash drive at first. He found it after Wu Feifei reminded him, and began to report:

"I have already written the proposal for the literature review, and now I will make a literature report.

Perovskite quantum dots are a new class of optoelectronic materials, which have the advantages of ultra-high photoluminescence quantum efficiency, narrow line width, wide color gamut, solution synthesis and processing, and have shown great applications in lighting and display fields. potential.

...

A key parameter of quantum dot materials is the fluorescence quantum yield, which can be tested with our TRPL equipment, but an integrating sphere needs to be installed for quantitative analysis. "

Facing Wu Shengnan's gaze, Wei Xingsi waved his hands and said, "I see, Xu Qiu should contact Qiu Heming and ask about the price."

Hold a group meeting, one or two, all come to ask for money, the funds are burning.