I Have a Research Support System

Early the next morning, Xu Qiu entered the simulation laboratory II to test the results.

Simulators have completed several fundamental characterizations of the three products.

However, it only completes the experimental operation and cannot perform data analysis.

Xu Qiu had no choice but to do it himself. He took the original data and analyzed it by himself.

It can be identified that the three main products are all diamine substitutes of perylenetetracarboxylic dianhydride, and the purity of the sample is above 99%.

At the same time, simulation experimenters are still working on device preparation, testing and optimization.

Yesterday, the instructions Xu Qiu gave it were fuzzy instructions, which only provided initial conditions and optimized directions with priorities.

For the initial conditions, he found the conditions in a document as a reference, and the priorities of the optimization direction, from large to small, are the rotational speed, thermal spin coating temperature, post-annealing temperature, solvent additive, solvent type, solution concentration, D/A co- mixing ratio...

It's a bit similar to what he did when optimizing the PCE11 system before, but now he doesn't need to do it himself, and let the simulation experimenters imitate his ideas for optimization.

The specific optimization mechanism is still unclear and remains to be seen.

Of course, the simulation experimenters also support precise settings, which is similar to programming, and the specific optimized route is clearly written, such as:

if PCE (low speed) \u003c PCE (high speed);

then speed+=100;

else speed-=100;

However, this method is not very feasible in the early stage of the experiment, because there are too many variables, and it can be tried when there are fewer variables in the later stage of optimization.

The work efficiency of the simulation experimenters is very high. On the one hand, they are tireless. On the other hand, they can work multi-threadedly and carry out multiple experimental contents at the same time.

Thus, the first data on the optoelectronic properties have been produced.

There are two kinds of donor materials, namely PCE10 and PCE11, and the acceptor materials are three simple PDI molecules synthesized yesterday.

The highest efficiency based on the PCE10 system is currently just over 3%, while that of the PCE11 system is only a few tenths, less than 1%.

The efficiency data of the PCE10 system does not seem to be high, but it is also within Xu Qiu's expectation.

The system based on PCE10 and simple PDI in the existing literature has a maximum efficiency of about 4%.

He can now have 3%, which is considered to have reproduced the data in the literature.

At present, there are not many PDI systems with an efficiency of 6%-8%, and the PDI molecules they use are all improved products based on simple PDI molecules.

The modification of simple PDI molecules is also the focus of Xu Qiu's next work.

As for the PCE11 system, he can roughly guess the reason for the low efficiency.

The crystallinity of both is too strong, which is not conducive to the formation of good blend morphology, and it is normal to have poor device performance.

It's just that he didn't expect it to be so bad.

Xu Qiu originally thought that if there is about 1.2%, it can be optimized to 3.4%, and maybe a small article can be produced, but now its base is too low, and there is no need for further optimization for the time being.

Therefore, he casually canceled the instruction of the simulated experimenters to optimize the PCE11 system, and let it focus on the PCE10 system.

Afterwards, if there is a modified PDI material, it is not too late to restart.

...

At 8:45 in the morning, Xu Qiu arrived at the school bus assembly point.

There were not many students taking the school bus during the holidays, there were only three other than him, so there was no queue.

A few minutes later, Han Jiaying and Chen Wanqing came over one after another. The junior looked like she was awake, but she was full of energy.

The three of them greeted each other and exchanged a rough idea of ​​today's experimental arrangement.

After a while, the driver opened the door, and under the command of the security guard, everyone swiped their cards to get on the bus.

Due to the small number of people, there were quite a few vacant seats in the front row. Chen Wanqing sat in the second row, while Xu Qiu and Han Jiaying took their seats in the fourth row.

After sitting down, the junior girl took out her mobile phone, plugged in the earphone cable, and handed an earphone to Xu Qiu, who naturally took it and stuffed it into her ear.

Soon, a gentle English song came to my ears.

I'll sleep for a while, call me when you arrive.

OK.

Xu Qiu had a good rest yesterday, and now he is very energetic, so he didn't close his eyes to rest his mind.

He thought about buying polymer donors, and he opened his phone to find the catalog files that several sales companies had sent him.

There are many common polymer donors such as PCE10, PTB7, P3TEA, PDBT-T1, PDPP2T, etc., most of which are narrow-bandgap polymers based on traditional fullerene systems.

‘The average price is around 1,500 for 100 mg, and the minimum price is 100 or 200 mg. If you buy 100 mg of each type, the sum will cost tens of thousands. '

'But in fact, I don't need a particularly large amount. As long as there is about 10 mg, it is equivalent to endless materials in the simulation laboratory. '

'If you want to ask them for some samples, I don't know if they will give it. '

'If you choose a company that you have cooperated with a lot before, ask the company in Shencheng. '

Hello, can I send you a new product catalogue? Xu Qiu sent a message.

A few minutes later, the salesman replied:

Here I am.

[The latest product catalog in February.PDF] Xu Qiu accepted the document, and before he had time to read it, he received another message:

Our company has recently developed a batch of PCE11 materials, and now the efficiency can reach more than 9.5% after blending with PC[70]BM. Is your research group interested in buying some?

15000/1 gram, 8000/500 mg, 4000/200 mg, 2500/100 mg.

This is a piece of work recently published on AM. At present, we should be the only company producing this product in China. Then another screenshot was sent, with the title of the article and the molecular structure on it.

Xu Qiu was shocked. Isn't this his material? It was included in the product catalog by the photoelectric company so quickly, and it was sold so badly.

Sure enough, keeping up with the times can make money.

The materials you sell are developed by me, and the monomers were bought from you at that time... Xu Qiu replied.

The other party replied with a whale eating emoticon package, and then said:

I saw the historical records, it's really you.

Is it convenient to share material synthesis and device fabrication process?

Xu Qiu thought for a while, and replied calmly: Yes, our research group is currently expanding its research direction, can you send us some small samples of donor materials, and if they are useful, we will buy them in bulk. He said It is also true to say that if you try it in the simulation laboratory and switch to the real experiment in the future, you still need to buy materials.

No problem, please report the name of the material to me.

PTB7, P3TEA, PDBT-T1, PDPP2T...

Okay, I've recorded it, and I'll arrange delivery for you right away. The address hasn't changed, right?

The address hasn't changed.

Seeing that the other party was so polite, Xu Qiu did not hide any secrets, and told the other party the details of the synthesis of PCE11 materials and device preparation.

Unexpectedly, the problem of materials can be solved so easily, and this time there is no need to apply for funding from Mr. Wei.