I Have a Research Support System

Tuesday morning, material one 216.

Xu Qiu intends to deduce the results in the simulation laboratory in reality, and turn them into results as soon as possible.

So, Xu Qiu found Mo Wenlin who was cleaning the substrate in the laboratory, and said, How is the article on ternary devices recently written?

It's okay, Mo Wenlin agreed, and then changed the cleaning solvent from acetone to isopropanol, and continued: In general, write according to the idea of ​​'acceptor alloy' you mentioned before, now whether it is from Both the angle of light absorption and the short-circuit current density of the device can support this view.

Well, not bad, Xu Qiu changed the topic: Today I have time to help make two systems, PCE10:IEICO-4F and PCE10:FN-4F, and I want to prepare a batch of translucent devices.

Mo Wenlin nodded: Okay, is there any difference between the specific device preparation and the normal device?

Xu Qiu explained: It is exactly the same until the vapor deposition, and a special process is required for the vapor deposition, and I will teach you later, by the way, I prepared the solution yesterday and put it on the mixing table.

Okay. Mo Wenlin made an OK gesture, and after Xu Qiu walked away, she whispered, Why does Xu Qiu look more and more like Teacher Wei?

This is not her illusion. Wei Xingsi usually finds people to do things like this. He greets people first, chats casually, and then changes the subject, for example: Sun Wo, how did the device test results yesterday... Oh, it's not good. Well, then continue to try again today... By the way, if you have time, go to the finance office and deliver the appointment reimbursement form for the student subsidy of the research group this month.

Under the influence of his ears and eyes, Xu Qiu also learned this kind of speaking skills. It is too straightforward to go up and find someone to do things directly, and it will be a matter of course after laying the groundwork.

After explaining the matter to Mo Wenlin, Xu Qiu returned to the inner office, found Chen Wanqing and Han Jiaying, and asked, Sister, sister, how is the current situation of Blue River Company?

Hmm... Chen Wanqing thought for a while and said, Blue River Technology has hired a new programmer to help them write the control program, and now the stability of scratching is better than before;

At the same time, last week they found a micro-nano processing institute in Shanghai and customized a ceramic scraper. It is said that a multi-layered scale-like structure is designed on the bottom of the blade, which helps to improve the uniformity of the film thickness;

In addition, they have also transferred the scraper coating machine to the glove box, so there is no need to scrape in the air. Now based on the J1:IDIC system, the performance is the highest. At present, the scraper coating efficiency can reach 8.6%, which is only higher than that of the spin coating method. 11.5% turned out to be 3 percentage points lower...

Xu Qiu nodded. He was not surprised that there had been so much progress in about three weeks. After all, it was the main company of Blue River. Master's and doctoral degrees from prestigious schools are naturally quite impressive.

Afterwards, Han Jiaying said: In addition, at Blue River Photoelectric Materials, Yang Qin took the newly recruited master students and started to synthesize. My senior sister and I asked them to start with two standard donor and acceptor materials, namely J1 and ITIC. , because it is synthesized from raw materials, the difficulty is not low, and now they are still groping for conditions...

After Xu Qiu understood all the situation, he asked, When do you plan to go there this week?

Brother, do you want to come together? Han Jiaying immediately understood Xu Qiu's meaning, and began to help analyze: Brother, you have to go to class on Thursday, and Blue River and the others should have a holiday on Friday for the National Day, so let's go there on Wednesday?

Chen Wanqing nodded: I have no problem.

Xu Qiu also agreed, Okay, let's do it on Wednesday.

Chen Wanqing asked again casually: Xu Qiu, why do you suddenly want to go to the Blue River?

Xu Qiu explained his idea for the second job: I want to use my senior's IEICO-4Cl material, with three donors H43, J2, and PCE10, to prepare flexible, semi Transparent, colorful, fully solution-processed organic photovoltaic devices...

That's it... Chen Wanqing thought for a moment, and said: This idea is not bad. If the results of the device are good, and a good article can be published, it means that the requirements for craftsmanship are relatively high. By the way, Xu Qiu, you plan to do it yourself. do, or...

Halfway through speaking, Chen Wanqing suddenly thought of something, and turned to look at Xu Qiu.

Xu Qiu made an innocent look and looked at the senior sister.

Okay, okay. Chen Wanqing was quickly defeated: Anyway, the article on IEICO-4Cl in my hand will be written soon, so I will help you by the way. Tell me, what is the expected result?

The efficiency is 7%, 8%, it doesn't need to be too high. Xu Qiu responded.

Chen Wan gave him a clear look: 7% and 8% are not high. The previous result of 8.6% is the result of only scraping the effective layer on the ITO glass substrate. The electrodes and transport layers are evaporated molybdenum trioxide and If the aluminum electrode is replaced with a flexible and translucent device, the result we get is only 6.2%, and this is the most suitable IDIC system for scrape coating...

Sister, I can only ask you to work harder. Xu Qiu said with a smile.

After finishing speaking, he glanced at the preliminary results obtained in Simulation Lab III. According to the previous idea, flexible, translucent, and fully solution-processed devices were prepared by scraping. Among the three systems, PCE10: IEICO was the most efficient. -4Cl, only 5.1%, there is still a big gap from 7% and 8%.

Indeed, there is a long way to go. This is somewhat similar to a mathematical phenomenon: 0.95 to the tenth power is approximately equal to 0.59.

When it comes to multi-step processing technology, even if each step is done very well, that is, 0.95, it may fail in the end, that is, 0.59.

Not to mention flexible, translucent, scrape coating, and full-solution processing methods, many processes cannot be the best.

Of course, in the initial stage, there is no way to do this, so we can only take it slowly.

However, the priority of this job is relatively low. The job that broke the world record will be published first, and then I will talk about it with an AM.

After chatting with my seniors and juniors for a while, Xu Qiu began to write articles about the two systems of PCE10:IEICO-4F and PCE10:FN-4F, and planned to vote for AM.

Although the work has not yet started to progress in reality, the article can be written first. This is the advantage of the article that does not require the development of new materials. It can be used for a series of basic characterizations such as NMR, elemental analysis, and cyclic voltammetry. It is enough to cite several documents that were synthesized for the first time directly after the material name.

The first is the structure of the text of the article. Xu Qiu planned it by planning the content of the pictures.

The first picture shows the molecular structure, light absorption spectrum, and energy level structure of PCE10, IEICO-4F, and FN-4F.

This is a regular start. Basically, most articles in the field of organic photovoltaics will put these at the top, and it happens that the three pictures of abc and abc are combined into one.

In the second picture, the light source GIWAXS, electron microscope TEM, AFM and other morphological characterizations do not need to be displayed, or even tested, because this is not the focus of the article.

Xu Qiu intends to directly display the best device performance, including the device structure diagram, J-V curve, and EQE curve, which are also three pictures of abc in one.

In the third picture, two sets of photos are placed directly, one is a photo of the translucent device itself, and the other group prints out the color LOGO of Shanghai University of Magic, and then puts the translucent device on the color LOGO to take pictures.

On the one hand, you can clearly see the difference between the superimposed translucent device position image and the non-superimposed position image, and on the other hand, you can also promote a wave of alma mater by the way.

This is also the inspiration Xu Qiu got from reading literature. He had seen an article published by Lu Changjun's research group at the Institute of Chemistry, Chinese Academy of Sciences before. Rows of ICCAS were printed, still in black and white, and looked rather weak.

Xu Qiu directly uploaded the color picture LOGO this time, which is more compelling.

In the fourth picture, Xu Qiu intends to increase the workload for myself, and conduct in-depth research on the PCE10:IEICO-4F system, the device efficiency and the corresponding AVT value under different electrode thicknesses.

The thickness value is decided to choose 10, 12, 14, 16, 18, 20, 100 nanometers, of which 100 nanometers is used as a normal device, that is, a standard sample for reference, and the thickness of other thin-layer electrodes includes 1 nanometer gold. .

A table can be listed here to list in detail the changes of PCE, AVT and other data under different electrode thicknesses in the form of a table.

The fifth picture...Xu Qiu found that there was really nothing to do the experiment.

If there are only four pictures, it is not impossible, but the article seems a little thin.

So, he decided to come up with something fancy, which was also the inspiration he got from reading other people's literature before.

When testing normal devices, the light is tested from the glass/ITO side, and the conventional test method of translucent devices is the same, lighting from the transparent glass side.

Xu Qiu plans to test another set of device performance data from the side of the translucent electrode.

It is foreseeable that the efficiency of the device will definitely become lower, because the light will be absorbed by the semi-transparent electrode before reaching the effective layer.

Most of the attenuation of efficiency comes from this absorption loss, so the magnitude of attenuation is basically equal to one minus the AVT of the translucent electrode.

Anyway, it doesn't take too much effort to test it, and you can get one more picture, so why not do it.

After two o'clock in the afternoon, Mo Wenlin completed the first few steps of device preparation, transferred the substrate to the evaporation glove box, and then entered the office, saying:

Xu Qiu, for your two systems, I used the optimal conditions to make two sets of rotational speeds for each set. Each set of rotational speeds has two pieces, a total of eight pieces of devices, and the last thing is the evaporation.

Okay, I'll teach you how to vapor-deposit translucent devices later. Xu Qiu nodded, put on his lab coat, and entered the inner laboratory.

PS: Wanchang is over today. It's the Chinese New Year, I'm a little busy, try to keep updating, if it can break out, it will break out, if it can't break out, it will guarantee a minimum of 6K words twice a day.

PS2: From this month to now, 8W words have been updated in ten days. On average, 8K words are added per day, which is equivalent to adding 2W words, so monthly tickets and recommendation tickets are not too much.