I Have a Research Support System

Xu Qiu's tone was calm, and he began to report: Next, my main research direction is to prepare translucent and stacked devices based on the currently developed ITIC type non-fullerene acceptor materials. There is a certain progressive relationship.”

First of all, let me talk about the laminated device. If it is a simple four-terminal double-junction laminated device, its structure is a normal device, plus a semi-transparent device, connected in series, and then placed vertically. Two The battery devices are equivalent to being bundled together to absorb a unit of sunlight.

If it is a more complex two-terminal stacked device, it is equivalent to preparing a semi-transparent device as a sub-cell first, and then directly preparing another sub-cell on top of it to achieve the stacking effect.

The preparation process of the two-terminal method is relatively difficult, but the flexibility is relatively high. If you want to do it, you can even make the second sub-battery translucent, and then add the third and third sub-cells on top of it like building a house. Four cell devices to realize a multi-junction stack device.

Considering that semi-transparent devices are a prerequisite for stacked devices, I plan to develop semi-transparent devices first.

Semi-transparent devices, as the name suggests, are such battery devices that are translucent when viewed with the naked eye, that is, a part of visible light can pass through.

The range of visible light is roughly 390-780 nanometers, so in the selection of materials for the effective layer of translucent devices, materials with near-infrared light absorption are a preferred choice, that is, the light absorption range is 700-900 nanometers or even 800- For a material of 1000 nanometers, the corresponding band gap of the material is about 1.24-1.38 electron volts.

It just so happens that there are such materials in our group, such as the IEICO and IEICO-4F developed by senior sister Chen Wanqing, and the FNIC-4F developed by senior sister Wu Shengnan, which are more suitable materials.

In the initial stage, I plan to choose PCE10 as the standard donor material, IEICO-4F and FNIC-4F as the acceptor material, and make a preliminary attempt, and then expand to other systems, including IHIC and 4TIC synthesized by Wu Shengnan's plan.

For translucent devices, an important characterization parameter is AVT, which translates to the average light transmittance in the visible light range, and some advanced characterization parameters include chromaticity diagrams and so on.

Traditional battery devices, because the effective area is covered with metal electrodes such as silver, aluminum, and gold with a thickness of about 100 nanometers, the AVT is usually less than 1%, and the preparation of semi-transparent devices is usually done from the electrodes. It is to switch to light-transmitting electrodes, such as thin metal electrodes, silver nanowires or even ITO, etc., and exploring the preparation process of light-transmitting electrodes will also be my main work in the future.”

It has been a long time since Xu Qiu gave such a long report at the group meeting, and after a speech, his mouth was still dry.

Very good, Wei Xingsi praised, and then said: It happens that if Xu Qiu can produce any results on your side, it can be used in the notebook written by Wu Shengnan as a preliminary work.

Han Jiaying was sorting out the work of the J3 system last week. The current progress of the article is about 50%, and the target journal is AEM.

Because the performance of J2 is not as good as that of J3, even though it is also a 12%+ system, the probability of being beaten back when you vote for AM is relatively high, so you simply vote for AEM directly.

According to Wei Xingsi's estimation, the situation of Han Jiaying's article is almost like this:

20% chance of submitting to AM, 40% chance of being rejected for republishing, 20% chance of being rejected for transfer to AEM, AFM and other journals in the first district, and 20% chance of being rejected for transfer to the second, third and fourth district journals such as AELM;

On the other hand, direct submission to AEM has a 60% chance of passing the draft.

Then it is safer to choose to invest directly in AEM.

Wu Shengnan was sorting out the articles of the m-ITIC system last week, and the current progress is about 80%. Judging from this, the articles can be submitted before the National Day holiday.

Then she planned to start working on the IDIC-M system and the writing of the Wei Xingsi Jieqing Fund simultaneously after she took her leave.

Last week, Mo Wenlin was mainly writing the article on H22: ITIC: IEICO system, and the progress was almost 40%.

There are still many routines in the ternary system, because there are three components mixed together, compared with the binary system, there will be many more possibilities, it depends on how the author explains it.

For example, Mo Wenlin’s first work was a ternary system composed of H22 donor, fullerene acceptor PCBM and non-fullerene acceptor ITIC. According to the characterization of TRPL results at that time, Xu Qiu speculated that “PCBM and ITIC are Parallel structure, Mo Wenlin put this point of view in the title of the article, and it appeared as a highlight of the article.

In this work, Xu Qiu speculated that ITIC and IEICO form an acceptor alloy because of their similar molecular structures, which was also written by Mo Wenlin in the article.

Including the next work of the third J1:ITIC:PDI4-B4T, Xu Qiu found that this system added very little 3D-PDI material, but improved the performance of the device, so he speculated that the main function of the PDI material is not to provide complementary Light absorption, but to provide the driving force for charge splitting, helping the donor material J1 to achieve exciton splitting.

As for the point of view of the conjecture type, as long as it can be justified after it is put forward, it is enough, even if it is wrong, it does not matter.

Moreover, like the current conjecture, others do not have X-ray eyes and cannot see specific microscopic scenes, so it is difficult to refute whether your point of view is correct.

In Mo Wenlin's work, Xu Qiu participated in a relatively high degree, and put forward a lot of opinions.

After all, Xu Qiu is almost guaranteed a second author for the articles produced by other people in the field of organic photovoltaics, and his second author is not for nothing.

After lunch, Xu Qiu went to the Jiangwan campus. After getting off the school bus, he went straight to Jiangwan Xiancai. The campus here was still the same as before. There were no people there, and it was still in the state of Jiangwan prairie.

When he came to the door of Xiancai, Xu Qiu took out his card and swiped the card, and there was a rapid didi sound from the access control device, indicating that the access control has not been activated.

Thinking that the new card had not been used for access control, he changed the old undergraduate card, but also failed to open the door, prompting this card has been cancelled.

Well, the validity period of the old card has expired, so Xu Qiu had no choice but to call the security guard to open the door.

Speaking of it, after the students graduate, the card will be canceled, but there is usually some money left in it that cannot be spent.

Within the specified time, graduates can go to the one-card office to withdraw the remaining amount in cash. If they do not withdraw cash within the time limit, it will be automatically regarded as a donation.

The amount in Xu Qiu's old card only had three digits including the decimal point, so he didn't bother to withdraw cash, so he simply donated it, but he didn't know where it went.

And some local tyrants like to recharge 500, 1000 or even 2000 in the one-time card, and forget to withdraw cash after graduation, and they will suffer a lot.

Of course, local tyrants may not be short of this money.

After the security uncle opened the door, Xu Qiu first went to the security office to handle the access control of the doctoral student's new student number, then took the elevator to the fifth floor, unlocked the U-shaped locks of rooms 520 and 522, and walked in.

Xu Qiu has not been to Jiangwan for a long time, but the laboratory here has not changed much compared to before, except that Lao Wang has integrated water, electricity, gas and extraction devices in the fume hood.

Xu Qiu carefully checked the water outlet and drainage conditions of each fume hood, whether the outlets were powered, whether the nitrogen gas passage was smooth, and the exhaust fan's suction effect.

There is no problem with water, electricity, electricity, and the three fans are relatively powerful. The sound is not too loud when running, and the suction is quite strong, so you can clearly feel the movement of the airflow.

It may be because the fan is relatively new, like the fume hood over there in Zhangjiang, the sound of a fan is really loud.

Buzzing and buzzing greatly affect the mood when doing experiments, so they were assigned to inorganic experiments.

After the matter of the fume hood was settled, the decoration of the Jiangwan laboratory was now all completed.

After that, if you move, there are almost four parts, the handling of instruments, the handling of hazardous chemicals, the return of the glove box to the factory for refitting, and the re-adjustment and calibration of all instruments.

Now there is still a small tail, similar to the acceptance of the gas pipeline before, and now the fume hood also needs to be signed by the person in charge, so that Lao Wang can get the payment from the school.

So, Xu Qiu called Lao Wang, and the other party said, It's outside, and I will be there within half an hour.

During the free time waiting for Lao Wang, Xu Qiu left his laboratory and planned to visit other places in Xiancai building.

It is still very important to know what the neighbors are doing, so that if something happens, you can run away.

The first floor is a school public instrument platform similar to the old aging building, and the facilities here are pretty good.

There are many more expensive instruments, such as transmission electron microscope TEM, nuclear magnetic resonance instrument NMR and so on.

Of course, there are also some conventional gel chromatography GPC, Fourier transform infrared absorption spectrometer FTIR and so on.

Moreover, the instruments here are relatively new, and new usually means good. After all, technology is generally forward iteratively, and there are few things that seem to be backward.

There is a very large conference room on the second floor, which is similar to the seats in a movie theater. It is estimated that it can accommodate 300 people for a conference. There is also a student activity center, which is similar to a study room. The supporting conditions are very good. The seats It's not a bench but a single or multi-person sofa.

The third floor belongs to the Jiangwan Advanced Materials Research Institute, and several of their research groups occupy the first floor. After all, there are academicians, and the school's resources for academicians are very high.

However, although there are two academicians in the Department of Materials Science and Technology, they are not under the management of the Department of Materials Science and Technology, and are independent departments.

One of them is the Jiangwan Advanced Materials Laboratory here, and the other is the Equipment Institute, which is engaged in military industry, and the conditions are also very good.

The Equipment Institute has several exclusive bungalows in the Handan Campus, which belong to a confidential institution, and students who enter the research group must sign a confidentiality agreement.

The field they do is more application-oriented, and they are not very good at publishing articles, but the treatment is very good.

Most of the Ph.D. students in Shanghai Comprehensive University earn almost 2-4K per month, and the Institute of Equipment is the one with 4K+.

And everyone in the group can win the national award in turn, because every year there is a special national award quota for the Institute of Equipment, and there is no need to compete with other students in the material department.

This belongs to the national award that can be won while lying down.

The sixth floor is another independent research institute of the Department of Chemistry, which is similar in nature to Jiangwan Advanced Material Laboratory and Equipment Institute, but Xu Qiu is not clear about the specific situation.

It may be because the Xiancai building is the first phase of the project, and the chemistry building and the environment building behind it are the second phase of work, so after the construction of the Xiancai building, there were many vacant rooms, and the independent research institute of the Department of Chemistry came to occupy them. one floor.

The fourth, fifth and seventh floors belong to the Materials Department.

Xu Qiu took a casual look, and found that the student office on the fourth floor was still empty and empty.

Most of the other rooms have traces of renovation, and a few are under renovation, but the progress is not fast, and many rooms have not started to hang the ceiling.

But none of the fully furnished laboratories like rooms 520 and 522 exist.

It seems that other teachers in the material department are still quite resistant to the matter of moving.

In fact, Wei Xingsi was also somewhat resistant to moving.

But who let the new laboratory provided by the department have a large area, and it can also integrate the original Handan and Zhangjiang laboratories without running around.

On the whole, the advantages outweigh the disadvantages, so he is naturally more active.

The seventh floor is the top floor, where there are several rooms specially used for ventilation.

In the stairwell on the seventh floor, there is a climbing device that can also go up to the roof.

However, there is a lock on the top of the roof, which is relatively safe.

After shopping around, Xu Qiu returned to room 520. After a short wait, Pharaoh rushed over with the list.

Xu Qiu signed and completed the acceptance of the fume hood.

PS: Ask for a recommendation ticket on Monday, ask for a monthly ticket, if the limit is exempted, it will be updated directly.

PS2: The two chapters are nearly 7K words, and there are a lot of updates, the author is not very moral, so you understand... Rolling around asking for tickets, don't be sure next time!