I Have a Research Support System

After slowly getting used to the feeling of cold water, Xu Qiu opened the system interface:

【Scientific Research Auxiliary System】

Privilege Level: 1

Credits: 1978

Tasks in progress: 1

Proficiency:

【Experimental operation class】

Preparation method:

Clean the substrate (fourth stage 20%/fourth stage 50%, require ultrasonic cleaner, tweezers, nitrogen gun)

Solution preparation (fourth stage 10%/fourth stage 50%, glove box, heating and stirring table, disposable syringe, medicine spoon, pipette gun are required)

Spin coating (fourth stage 0%/fourth stage 50%, requires ozone generator, glue homogenizer, disposable syringe, tweezers, pipette gun, heating and stirring table)

Evaporation (third stage 0%/fourth stage 50%, requires glove box, evaporation equipment)

Characterization methods:

Photoelectric performance characterization (fourth-order 3%/fourth-order 80%, glove box, source meter, J-V test software, solar simulation light source are required)

【Instrument Equipment Tools】

...

【Special class】

Literature reading (Level 94%/Level 50%)

Advanced task: prepare a reference system solar cell device, and obtain a photoelectric conversion efficiency of more than 5%. Task reward: 2000 points, permission level +1.

##

Xu Qiu didn't expect the system to include characterization methods in the experimental operation category, and completed the novice task V by mistake.

It's a surprise, but the first thing to consider is how to complete the advanced task.

He begins to analyze:

First of all, the system will not issue tasks that are completely impossible to complete.

Then to complete the task, it must be improved on the basis of the existing experimental conditions.

The variables that affect the experimental results are: reagents, instruments, operations, and accidents.

Reagents.

Including PEDOT, zinc acetate dihydrate, P3HT, PC[60]BM, and various solvents, etc.

They are all purchased from major reagent manufacturers or specialized optoelectronic material companies. Currently, the laboratory does not have the ability to produce reagents by itself.

It is said that the laboratory under construction at the Zhangjiang campus is mainly used for synthesis, but it has not been completed yet, and it cannot quench thirst far away.

Therefore, reagents can be ignored at first.

Instrumentation.

Most are fool-proof instruments similar to ultrasonic cleaners, and their impact is also negligible.

However, such as glue homogenizers and evaporation equipment will still have a certain degree of impact and can be taken into consideration.

operational aspects.

Among the four operation steps, they are arranged in ascending order of importance.

The cleaning substrate is the smallest and can basically be ignored;

Then there is evaporation. Although the operation is difficult, the procedures are basically set, and there is not much room for improvement;

Next is the preparation of the solution, mainly the preparation of the effective layer solution. Different solvents, concentrations, and heating temperatures may affect the aggregation form of the polymer in the solution.

The last step is spin coating. The spin coating process of the effective layer will have a significant impact on the experimental results. Of course, this step is also related to the solution preparation.

He learned from the literature that in organic solar cells, the effective layer uses a bulk heterojunction, that is, two different substances are blended to form a thin film.

Among them, P3HT is a polymer, and PC[60]BM is a small molecule. They have poor compatibility and will form a three-phase structure in the film, that is, polymer phase, small molecule phase, and blend phase.

The distribution of the three phases, that is, the microscopic morphology of the blend film will affect the generation, splitting, transportation, recombination, and collection of photogenerated carriers, and then affect the optoelectronic performance of the device.

Among them, the most ideal microstructure is "double continuous interpenetrating network structure".

Different spin-coating methods have different film-forming processes, and the morphology of the obtained blend films may vary greatly.

He had noticed this before during spin coating, so he operated strictly according to the system image.

But if you want to seek a breakthrough now, you must make changes.

Surprise aspect.

Since it is unavoidable, it is not considered.

...

After comprehensive consideration, Xu Qiu decided to start with solution preparation and spin coating.

He intends to spend some points to deduce certain key skills to level five or higher.

If you still rely on the senior sister's fourth-level skills, the final result is likely to stay at 4.5%.

He looked at the requirements of the two experimental operations in the system:

Solution preparation requires glove box, heating and stirring table, disposable syringe, medicine spoon, pipette gun;

Spin coating requires an ozone generator, a homogenizer, a disposable syringe, tweezers, a pipette gun, and a heating and stirring table.

Glove boxes, heating and stirring tables, and ozone generators should be excluded first;

Medicine spoons, tweezers, and disposable syringes are not a high priority;

All that's left is the pipette and the homogenizer.

After comparing the two, Xu Qiu felt that the pipette was more important.

Because it is more flexible and more operable, the expected benefits of improving proficiency are also more.

"System, deduce the pipette gun proficiency to the fifth level."

[It takes 20%*1000=200 points to deduce the pipette to level 5 0%. Is it deduced? 】

"Deduction."

[The deduction is successful. 】

"System, if you want to continue to improve, how do you calculate the points, or increase by 1% for every 100 points?"

[After the proficiency reaches 0% of the fifth level, two deduction methods will be opened: one is to permanently increase 1% by 100 points; the other is to spend 500 points to provide an unlimited time teaching of the fifth level 100% proficiency. 】

One is a permanent promotion, and the other is a temporary promotion. How should I choose?

Xu Qiu didn't struggle too much, so he made a decision and chose the one with 500 points once.

If you choose to improve permanently, even if you put all the points in, you can only reach 17% of the fifth order. If you still can't learn anything, you will be at a big loss.

However, the current state of bathing is not suitable for studying, so he didn't exchange it immediately.

...

Back in the dormitory, Xu Qiu found that Tao Yan had just returned.

"It's so late, and you're still going back to the dormitory, aren't you spending time outside?" Ren Bin joked.

"I went to classroom 3108 for self-study today," Tao Yan waved the USB flash drive in his hand and said:

"This is the review material for the first chapter of "Material Preparation and Processing" that I compiled. Do you want more, Binzi."

"Yes, yes, of course." Ren Bin hurriedly got up and took the USB flash drive.

"Tao Yan, you have a day when the prodigal son will turn around." Xu Qiu said with emotion.

"You're still talking about me," Tao Yan winked, and said, "On the way back just now, I saw you walking with a girl on the road. Tell me honestly, who is she?"

"Xu Qiu, you have changed, and you lied to me that you are doing an experiment." Ren Bin also booed.

Xu Qiu shrugged helplessly, and said, "That's the senior from my lab, we left together after finishing the experiment."

"Oh—" The two expressed disbelief.

Unable to explain, Xu Qiuguo slipped away and lay down on the bed.

"System, spend 500 points to exchange for a fifth-level 100% pipetting gun teaching."

[Successful exchange. 】

A virtual image appears.

"I*, system NB!"

five minutes later.

"I*, the system cheated me!"