I Have a Research Support System

After returning to the dormitory to pick up the toiletries and a change of clothes, Xu Qiu took the school bus to the Zhangjiang campus.

When he came to Office A501 in the Microelectronics Building, he locked the door and entered the simulation laboratory.

After the system authority level is raised, the volume space inside the simulation laboratory is greatly expanded.

Moreover, he did some preparatory work in advance, and made several copies of Handan and Zhang Jiang's laboratories for backup.

Xu Qiu entered one of the synthesis laboratories and began to submit reactions.

There are a total of five synthesis reactions, and the target products are all P2FBT4T-2OD materials with the best performance. The reaction times are set to 8, 10, 12, 14 and 16 hours, respectively.

The previous polymerization reaction time was only reduced from 24 hours to 12 hours, and it has not been finely regulated.

This time-consuming reaction can also be completed quickly after the quadruple acceleration is activated.

It took about eight hours in total, and Xu Qiu successfully completed the polymerization and post-processing of all the products, and obtained a total of five groups of products that were extracted by chloroform Soxhlet and dried.

According to the participating polymerization reaction time, Xu Qiu marked them as P8, P10, P12, P14 and P16 respectively.

...

On Saturday, Xu Qiu optimized the manufacturing process of battery devices based on these five materials in the simulation laboratory:

Solvents, chloroform, chlorobenzene, dichlorobenzene three.

Donor/acceptor mass ratio, from 2:1 to 1:2.

Different solution concentrations and rotational speeds.

Spin coating method, spray coating method, ordinary spin coating method, thermal coating method.

Different thermal annealing temperatures.

Different volume fractions of solvent additives.

They are all known and relatively conventional means of regulation.

By Saturday night, Xu Qiu had made a total of eight batches of devices.

Only two days have passed in real time, but his actual experiment time has exceeded 60 hours, and more than 6,000 system points have been consumed.

Although you can freely adjust the posture during the experiment in the simulation laboratory, you can sit or even lie down to do the experiment, and the energy consumption is greatly reduced.

However, after two consecutive days of experiments, he was still exhausted.

That is to say, he is young, his physical fitness is there, and he can still carry it.

After leaving the simulation laboratory, Xu Qiu found a nearby bliss hotpot on Dianping.com, and ordered a horse killing chicken.

Lying on the massage table, Xu Qiu took stock of his harvest:

The optimal polymer system is P10, and the device efficiency has been optimized to 9.70%. The specific experimental conditions are:

The total concentration is 20 mg/ml, the donor/acceptor ratio is 1:1.5, the solvent is chloroform, the spraying method, the rotation speed is 3000r.p.m., no solvent additives are added, and thermal annealing is performed at 150 degrees Celsius for 10 minutes.

This time, the optimal solvent was chloroform instead, but because of its low boiling point, the thermal coating method of heating the solvent could not be used.

Under the condition of chlorobenzene solvent, the solution is heated to 90 degrees Celsius, and the efficiency is 9.48% using the previous hot coating method, which is slightly inferior to chloroform solvent.

In addition, the reaction time has little effect on the performance of the device, and the highest efficiency of P12 can reach 9.62%, and the conditions are similar to those of the P10 system.

It's a pity that the final efficiency is stuck at 9.70%, which is not high or low.

It is still close to the door, and it will be able to rush to 10%.

Thinking of the experiment experience of the past two days, Xu Qiu suddenly thought:

If only there was someone in the simulation lab who could help him with the experiment.

So he asked:

"System, can you copy me in and do experiments for me?"

[The current permission level is insufficient. After the next advanced task is completed, a similar function can be realized. 】

Xu Qiu regained his energy immediately. He had just mentioned it casually, but it was really good.

It is to complete the advanced task first, and further increase the authority level.

However, as long as the current achievement is not blocked by other research groups, it is not a big problem to post an article in the first district, and the completion of the advanced task is just around the corner.

He recalled carefully that after his proficiency of the four basic skills had been raised to the fourth level, he had entered the road of scientific research.

The system unlocks two important functions, weekly tasks and simulation labs.

This time, if he can publish an article in SCI District 1, it will be regarded as a big step on the road of scientific research, and the system will unlock a new function again.

You must know that the school's requirements for doctoral graduation are nothing more than one section.

As a matter of fact, even in Shanghai University, more than 90% of the graduate students cannot publish a single article for one area and one author.

...

On Sunday afternoon, Xu Qiu returned to the Handan campus.

Chen Wanqing is helping him with the basic characterization of some materials, mainly using the existing instruments in the laboratory to test the light absorption spectrum, fluorescence spectrum and cyclic voltammetry curve of the material.

She started on Friday, because he had a lot of materials, five in total, so she didn't finish all of them in one day.

The five materials included the initial PBT4T molecule, followed by P2FBT4T molecules with four different branches.

Today, Xu Qiu plans to make a batch of devices.

Although the data obtained in the simulation laboratory is real and effective, the source is unclear and cannot be used directly.

However, he does not intend to directly use the optimal conditions found out.

On the one hand, the P2FBT4T-2OD material in the laboratory is the P12 type with a reaction time of 12 hours.

And the best condition is the P10 type, so even if the "optimal condition" is used, it is not the "optimal condition".

On the other hand, the more important reason is that if the performance of the device is improved too much at one time, for example, the efficiency is directly increased to 9.6%, Mr. Wei will have more expectations for the performance of the device.

He would think: "It's only the second time to make a device, and the efficiency has increased from 8.8% to 9.6%. How about trying a few more times to break 10% every minute?"

But in fact, Xu Qiu has made eight batches of devices, and used all the optimization methods available to reach 9.7%.

There is still no clue as to how to further improve device performance.

He has also tried to do advanced derivation of spin coating again before.

It can consume 500 points and watched the operation demonstration several times, but found that there is no gain.

Because of the operations in the high-level deduction, he has learned all he can learn now, nothing more than spraying, hot coating, slow first and then fast.

Moreover, the system only teaches him these operating methods, and the system will not tell him which method is most suitable for his system.

It all depends on self-comprehension.

Moreover, there is a limit to how experimental operations can improve the photoelectric properties of materials.

If the upper limit of a material is 9.9%, then no matter how gorgeous the operation is, the final result can only be infinitely close to 9.9%.

Xu Qiu actually thought of some other ways.

For example, if the effective area of ​​the battery device is reduced from 0.09 square centimeter to 0.04 or even 0.01 square centimeter, the efficiency will definitely be improved.

Even the method of operation has been planned:

First dig a square hole with a side length of 2 mm in the middle of the stainless steel plate, then stick it on the surface of the battery substrate, and then test it with a solar simulator. The actual area of ​​the battery device illuminated by light is 0.04 square centimeters.

It's just that this method is not much different from lying to yourself.

But if there is really no other way in the end, this method might as well be used.