I Have a Research Support System

After preparing the sample, start the test of light absorption spectrum.

This time it was Chen Wanqing's turn to operate, and Xu Qiu introduced the operation steps and the principle of the instrument to Han Jiaying.

...

After the test, there are eight samples and four conditions, and the repeatability is very good.

After comparing the light absorption spectra of the four samples, Chen Wanqing said:

From the test results, the higher the temperature during the spin-coating process, the more the light absorption curve shifts to the short wavelength. Apart from that, there is not much difference in the shape of the curve.

Yes, Xu Qiu said:

120 degrees Celsius true thermal spin coating, the absorption band edge is at 720 nanometers, and 90 degrees Celsius pseudo thermal spin coating, the absorption band edge is at 750 nanometers.

It is generally believed that the higher the degree of crystallinity of the same material, the smaller the forbidden band width, and the more the absorption band edge shifts to longer wavelengths, that is to say, the previous thinking is correct.

I have a new idea. Chen Wanqing said excitedly suddenly.

Let's talk about it. Xu Qiu was quite curious about the senior sister's new ideas.

Other polymer donor materials reported before do not have such an obvious phenomenon of shifting the band edge of the light absorption spectrum, Chen Wanqing said:

Like PTB7-TH, although the crystallinity is not weak, there is no similar experimental phenomenon.

If we report this phenomenon, it is estimated that it should be no problem to post a small article.

This can also post articles? Xu Qiu said.

If your system efficiency is only 5% or 6%, you will definitely not be able to publish articles, but now that the efficiency is close to 10%, the result will naturally be different. Chen Wanqing said:

If you dig out a little leftover material from it, you can write an article. This can be regarded as the benefit of being a pioneer in the field.

As the saying goes, if one person attains the Tao, the chicken and the dog ascend to heaven?

As soon as Xu Qiu's words came out of his mouth, something seemed wrong.

He said that the two of us are chickens and dogs. Han Jiaying quickly realized.

I'm just making an analogy, making an analogy, it doesn't mean that.

Xu Qiu hurriedly waved his hands to explain, and then quickly changed the subject:

I think it is possible to systematically study the light absorption properties of thin films of donor materials and solutions at a range of temperatures.

The temperature range can also be relaxed, such as from 20 to 120 degrees Celsius, with a gradient of 10 degrees Celsius.

Hearing his proposal, Chen Wanqing thought for a moment and said:

The plan you mentioned is feasible, but even if this work is to be done, it will have to wait for your article to be published.

Xu Qiu nodded, he was deeply convinced that if the order of publishing the two articles was reversed.

It's like selling the DLC first and then the main game when selling a game. Other researchers probably won't buy it.

Senior sister's experimental idea, every time she goes to the second district, she is almost becoming a master of the second district. Xu Qiu said:

Can you be tougher and publish an article in the first district.

It's not that I'm not strong enough, so I can only fight for quantity. I have to meet the graduation requirements before I can talk about other things. Chen Wanqing said.

...

There were no more experiments tonight, so Xu Qiu planned to leave.

Seeing this, Han Jiaying also started to pack her schoolbag.

In the end, the two walked out of 216 together.

After walking a few steps, I met Tao Yan in the corridor. Judging by his appearance, he also planned to go back to bed.

His research group is a large group, and there are two laboratories and two offices in Caiyi.

Tao Yan is usually in the office of 222 on the second floor, not far from Xu Qiu's 216, and the two of them can occasionally meet in the corridor.

When he saw Xu Qiu and Han Jiaying walking side by side, he winked at Xu Qiu and left quickly.

This is my roommate, he's just like that, he doesn't look good all day long. Xu Qiu said:

He probably misunderstood something.

Um……

Going downstairs, you can still see the taillights of the battery car not far away.

If nothing else happened, it should be Tao Yan's car.

Tao Yan is also a native of Modu. He hasn't graduated yet, so his family didn't buy him a four-wheeled car, so he usually uses a battery car instead.

Xu Qiu searched for shared bicycles downstairs, but only found one.

Normally, he would just scan the QR code and ride away, but now he is too embarrassed to grab the bike with his junior.

Brother, please ride, I don't know how to ride a bicycle. Han Jiaying said proactively.

This... Xu Qiu thought for a while and said:

Let's walk together.

He simply stopped riding, anyway, the journey was only twenty minutes at most.

Handan Campus is the main campus of Modu Comprehensive University. It has a large area and is divided into several areas, the headquarters, the South District, the North District, and the East District.

The first floor of the material department is in the headquarters, the dormitory for the undergraduate students of the material department is in the south area, and the dormitory for the graduate students is in the north area.

The headquarters and the South District are not directly connected. You need to go out of the school gate and walk along the street for about one kilometer.

The point is, there are no street lights on that road.

Moreover, it is said that the law and order were not very good in the past few years, and there were occasional incidents where students' mobile phones were robbed.

Although there have been few reports of similar incidents in recent years, Xu Qiu is still worried that Xuemei will go back alone.

It would be nice if shared bikes had back seats.

It's a pity that it didn't. You can't put Han Jiaying in the front basket.

The two chatted as they walked, mainly Han Jiaying was asking questions and Xu Qiu was answering, and the topic revolved around Xu Qiu's scientific research experience.

After listening, Han Jiaying said with emotion:

Senior brother is so amazing. In less than a year, he posted one article, one article in total, and he will post another AM soon.

Where, one article is published now, and the other one is under review. The current work has not been completed yet. Xu Qiu said modestly.

Although the junior girl's reaction was a bit exaggerated and had a certain acting element, the feeling of being praised was still very comfortable.

Send Han Jiaying back to the girls' dormitory downstairs, and the two parted ways.

The dormitories of the male and female students in the material department are not in the same building, which is considered normal operation.

In some majors, men and women share the same building, but on different floors.

Xu Qiu didn't think that kind of mixed sex room was a benefit.

Because when I think about it, I feel that the building regulations will be very strict, and it will be embarrassing to see each other every day. I guess it will be more convenient for couples of the same profession.

...

Back in the dormitory, as soon as he entered the door, Tao Yan jumped to his side and said:

Xu Qiu, you have changed!

You actually crossed the road with another girl. I didn't realize that you were such a person before!

Tell me the truth, who is she!

When Ren Bin heard gossip, he also raised his ears.

New school girl in the lab, what are you thinking about every day?

Seeing their disbelief, Xu Qiu explained again:

It's not safe for her to go back to the dormitory alone at night, so I sent her back.

Worried about the safety of the school girl, you are really considerate.

Oh— Lian Ren Bin also began to boo.

Yes, the more you draw, the darker it becomes.

Let's stop this topic.

...

After washing up, Xu Qiu lay on the bed and entered the simulation laboratory, intending to optimize the performance of the device by true thermal spin coating.

The result this time is critical. Whether the efficiency can reach 10% is a major watershed.

The solution is ready-made, P2FBT4T-2OD:PC[70]BM, chlorobenzene solvent.

He set four temperatures of 90, 100, 110, and 120 degrees Celsius, and used two thermal coating methods for spin coating, and spin coated two pieces for each condition.

Spin-coated zinc oxide.

Spin coat the active layer.

In the simulated laboratory, there was 0.25 times the speed, the operating pressure dropped sharply, and there was no error.

Evaporation, complete.

The silvery substrates are filled with Petri dishes.

Xu Qiu is an atheist, but he still bowed to the void before the test:

No God, turn on my device.