I Have a Research Support System

In the evening, Xu Qiu tested the glove box, PCE10 material, and scraping machine copied from Blue River in the simulation laboratory.

The main function of the glove box is to provide an oxygen-free and water-free environment. In the case of the same water and oxygen content, that is, the display is less than 0.1ppm, the difference between domestic and imported glove boxes is not very big.

Originally, Xu Qiu thought that there would be some difference in the texture of the rubber gloves, but it turned out that there was no difference, and the imported ones still had an obvious sense of barrier.

However, the difference between PCE10 materials imported from Europe at 3W per gram and those purchased domestically at 1W per gram is quite obvious.

The solubility of domestically purchased materials is relatively low. In chlorobenzene solvent, the concentration is 6 mg per ml, and it is difficult to dissolve at room temperature. It needs to be heated to 60 degrees Celsius or even 90 degrees Celsius to dissolve slowly;

However, PCE10 imported from Europe has the same concentration of 6 mg per ml. It does not need to be heated and stirred. The solution bottle is shaken back and forth vigorously, and it will be completely dissolved within a minute.

When seeing this result, Xu Qiu was quite surprised, because it is difficult for ordinary polymer materials to dissolve. He had to heat it or prolong the time, such as stirring overnight, but now it dissolves after shaking.

Puzzled, Xu Qiu used GPC to test the molecular weight of the two, and found that the material imported from Europe had a number-average molecular weight of 15kDa and a polydispersity coefficient as low as 1.2, while the domestically purchased material had a number-average molecular weight of 18kDa, which was similar to the former. However, the polydispersity coefficient is high at 1.7.

The closer the polydispersity coefficient is to 1, the smaller the distribution range of the molecular weight is. Generally, the polydispersity coefficient of the directly prepared polymer material is about 2.0 or more. After a chloroform extraction, it can be about 1.4-1.8.

Their polydispersity coefficient of 1.2 should have gone through multiple chloroform extraction operations, or some other unique "secret", which locked the molecular weight in a small range and almost completely excluded high-molecular-weight insoluble substances.

Of course, the core competitiveness of optoelectronic materials is not whether it dissolves well, but its optoelectronic performance.

Therefore, Xu Qiu tried to use this batch of PCE10 materials imported from Europe to make devices, and the system was selected as PCE10:IEICO-4F. The results showed that the performance of devices based on imported European materials was 0.3% higher than that based on domestic materials.

Sure enough, you get what you pay for, and there is a reason why they are expensive.

Finally, Xu Qiu tried the scratch coating machine developed by Blue River and the others. In a nitrogen glove box, using the full solution method, they prepared several flexible substrates from Blue River and glass substrates from Wei Xingsi's group. PCE10: The standard sample of PCBM, the highest efficiency reached 5.92% and 7.11% respectively.

I am used to the devices prepared by spin coating, but the devices obtained by scraping are a little "ugly" and very uneven, just like when applying makeup, some places are almost covered with powder, while others are bare. Come out of the original skin.

Although it seems that there are quite a lot of problems for the time being, in general, the prospect of scraping is very good.

Xu Qiu hopes that Yang Qin, the general under Blue River, can optimize these as soon as possible, so that he can use them directly.

However, regarding Blue River's all-solution method to prepare devices, Xu Qiu's main achievement is not scraping, but the preparation of silver nanowire transparent electrodes.

Blue River and the others purchased a silver nanowire dispersion produced by a domestic company, and prepared a transparent silver nanowire electrode of a specified shape by means of drop coating and a mask.

The silver nanowire dispersion liquid can be directly drop-coated, or can be spin-coated to prepare a transparent thin-film electrode.

Xu Qiu quickly thought of a feasible idea: apply transparent thin-film electrodes on the ITO pattern glass substrate designed by himself, replace the metal electrodes prepared by evaporation method, obtain semi-transparent devices, and then apply them to stacked devices.

This can be regarded as a prerequisite for him to hit 15% device efficiency and hit CNS articles in the future, lighting up a pre-skill in advance.

In the next few days, Xu Qiu continued the two tasks at hand, IDIC and IDIC-4F system.

For the former, he has already started writing articles, while for the latter, he still lacks some basic characterization experiments. Xu Qiu assigned these tasks to Han Jiaying and Mo Wenlin.

Among them, for the current IDIC system, Xu Qiu only intends to point out the characteristics of "thick film and large size", without in-depth analysis of the reasons behind it, because it is not necessary.

Just the highlight of "the first thick-film, large-scale organic photovoltaic device with an efficiency exceeding 10%" is enough to support an AM-level article, even with detailed analysis, conjectures, and opinions, there is no way Break through the level of AM.

In this case, it is better to leave this analysis process, that is, the evidence of "exciton diffusion distance", to the IDIC-4F system later, so that the benefits can be maximized.

This is actually a common practice in the academic circle. Not all academics are ignorant nerds. In fact, there are quite a few "smart" people. After all, the threshold for this circle is relatively high.

On Thursday night, Xu Qiu was suddenly called to 218 by Wei Xingsi.

Wei Xingsi cut to the chase and said, "I told Lan He about what you told me the day before yesterday."

"How was the result?" Xu Qiu asked casually. When he heard what Teacher Wei said, he knew that it must be done.

"Blue River agreed. He plans to start another company. He invested 5 million yuan, accounting for 75% of the shares. We invest in technology and account for 25% of the shares. Of which, I have 15% and you 10%. What do you think? ?”

Xu Qiu thought for a while and replied, "I have no objection."

"Okay, as long as you agree." Wei Xingsi was not surprised, nodded and said, "Blue River will take care of details such as company registration and business license, so we don't have to worry about it. Looking for you. By the way, report your ID number to me."

"xxxx..." Xu Qiu reported his ID number, then returned to 216, thinking about becoming a shareholder of the company.

This kind of academic achievement is not a patent, has no exclusivity, and is not valuable in itself, because the article is published and the molecular structure is placed there, and anyone can synthesize it.

As for technology investment, Wei Xingsi is the leader, so it is normal to get more. Xu Qiu owns 10% of the shares, which is not a small amount, and he does not need to do much work. He only needs to provide general direction. Blue River invites some organic synthesis professionals Masters and Ph.Ds are responsible for the specific synthesis, and rounding up is equivalent to free money.

After conversion, 10% of the shares can also be worth 667,000. Of course, this is only wealth on paper, and there is no way to realize it. There is a high probability that the company will not be listed on the market. It depends on how much dividends the company can get after making money.

The investment in the organic synthesis laboratory is not high. Buy a few fume hoods, equip a better high-speed liquid chromatography instrument, the one that can pass through four or five columns at the same time, and buy some microwave reactors, ovens, and vacuum ovens. , Rotary evaporation and other equipment, the total cost is less than 1 million. If you don’t buy a microwave reactor, the cost can be reduced to 50W.

In terms of employees, it is relatively simple. One doctor, two masters, and two undergraduates are recruited, and they are almost ready to work, and they can start working directly.

The manpower in Shanghai is relatively expensive. The monthly salary for a doctor is 15K, for a master’s degree is 10K, and for an undergraduate is 8K, and then they are allowed to work flexibly, with a monthly expenditure of about 7W.

Sure enough, when I was an employee, I hated flexible working 996, but when I was a boss, I subconsciously hoped that my employees could work flexibly 996. Probably this is the alienation of capital.

The last thing is the rent. For the organic synthesis laboratory, 200 square meters is almost enough. The rent plus water, electricity, property and other expenses should be around 5W per month.

In total, the initial monthly fixed expenditure is about 12W.

However, if ITIC and other materials are synthesized from the source, 1 gram of synthesis can be sold for about 1W, and the cost of raw materials and consumables is less than 3,000 yuan. Based on the profit of 7,000 yuan, only 18 grams of materials can be sold per month to pay back the cost.

If the materials of the ITIC series can become popular and the business can be spread out, the probability of making money is still relatively high.

After all, the Guangwei Xingsi group buys more than 1 gram of materials with a unit price of 1W1gram from Shencheng Optoelectronics Company every month. It is estimated that there are more than 50 research groups in the field of organic photovoltaics across the country.

Some large research groups have a large number of people and a lot of money, and a single purchase may be 5 grams or 10 grams. The speed of material consumption is also fast, and the purchase is very diligent.

Even if some research groups do not intend to directly purchase finished ITIC acceptors and polymer donors, they must also have the need to purchase monomers.

For example, buy some intermediate units like IDTT-CHO and go back to design a new structure by yourself, just like building blocks. This is also the development of new materials. The PCE11 material developed by Xu Qiu before was built by building blocks in this way.

In addition to universities and research institutes, there are many domestic scientific and technological innovation companies in the field of organic photovoltaics similar to Blue River. They also have the need to purchase these materials. Although Blue River chose to purchase PCE10 materials imported from Europe, But some companies will choose to buy domestic materials.

In addition, there are not many competitors in this industry. As far as Xu Qiu knows, there are less than ten companies in China that specialize in this industry, and there are only three or five companies that can be named, one in Beijing, one in Suzhou, and one in Shencheng. .

However, the user viscosity of this kind of company is usually relatively high, and new companies will inevitably need to grab customers from other companies, and they need to figure it out slowly, which is a test of Blue River's ability.

Xu Qiu suddenly realized that he had really replaced himself as a shareholder of the company...

He also remembered that when he purchased monomer materials for synthesizing J2 and J3 donors, he seemed to have promised to provide the literature on the latest development materials in the group to the optoelectronic company in Shencheng. To the other party, now it seems that you can pretend to forget about it and procrastinate indefinitely.

After all, my identity has changed. I used to be a partner, but now I have become a competitor. Naturally, I cannot "capitalize the enemy".

PS: Today is also the third update of the 4D.