I Have a Research Support System

In the next few days, Xu Qiu made two more batches of devices, one was made of repeated PEN substrates, and the other was made of glass substrates under the same experimental conditions.

In the PTB7-TH system, the highest efficiency of the PEN substrate increased a little, reaching 8.20%.

For the standard sample under the glass substrate, the highest efficiency can reach 10.26%.

This value is slightly worse than the 10.68% he obtained in the simulation laboratory before, which may be caused by the different device structures.

The PEN substrate cannot be thermally annealed at high temperature, so the normal structure of the PEDOT:PSS transport layer is used, while the inverted structure of the zinc oxide transport layer was used before.

In addition, although the focus is on the PTB7-TH system, Xu Qiu also made the P3HT system.

The main purpose is to make the data of the article more plentiful, and it also shows that the processing method of this flexible substrate is universal.

After that, Xu Qiu completed various characterization tests, including optical absorption spectroscopy, fluorescence spectroscopy, CELIV testing, etc., and took a photo of bending a PEN substrate device with two tweezers.

During the interval between the experiments, Xu Qiu was also simultaneously writing the final report of the project in the form of a thesis.

At this time, his advantage of reading a lot of literature in the early stage is reflected, and he can also ask his senior sister for advice at any time.

Therefore, writing Chinese papers is not stressful.

In the text, Xu Qiu first numbered the four groups of devices, the PTB7-TH and P3HT systems of the PEN substrate are 1# and 3# respectively, and the corresponding systems of the glass substrate are 2# and 4# respectively.

Then, it is mainly to compare the difference between the two substrates of glass and PEN, the influence on the performance of the device, and analyze the possible reasons.

For example, the optical properties, light absorption spectrum and fluorescence spectrum are directly measured on the effective layer film, and the data are the same for the devices of the two substrates.

So there is no need to compare, just convert the obtained image information into text.

For example: the main light absorption range of 1# and 2# effective layer blended films is 550-750 nanometers, the highest absorption peak position is at 680 nanometers, the main light absorption range of 3# and 4# is 300-600 nanometers, the highest absorption peak The peak position is at 530 nm.

The fluorescence spectrum is relatively complicated. Both systems need to test the fluorescence spectra of the donor and acceptor individual component films and blended films, and then calculate the fluorescence quenching efficiency.

However, it is not difficult to look at pictures and talk.

For example, CELIV is used to characterize battery devices, so the test results of devices with different sample numbers will be different, and comparative analysis is required.

Xu Qiu's test results:

The carrier mobility of 1# is 1.2E-4 centimeters per volt-second, and 2# is 2.5E-4 centimeters per volt-second. Obviously, 2# is higher, but both are in the same order of magnitude.

Because the performance of the battery device corresponding to 2# is better, it can be explained that the improvement of the carrier mobility leads to the improvement of the device performance.

Further, you can continue to analyze, for example, the increase in mobility will reduce the charge recombination, increase the short-circuit current density, and so on.

But if it is reversed, if his test result is:

2# is 1.2E-4 cm2 per volt second, 1# is 2.5E-4 cm2 per volt second.

Then it can be said that the carrier mobility of the two is not much different, in the same order of magnitude, or that the carrier mobility has little effect on the photoelectric performance of the device.

When Xu Qiu first read the literature, he often wondered why some people said that the same experimental phenomenon was caused by XX, some people said it was caused by YY, and others said it was caused by XXYY. Is there no such thing in the academic world? A unified view?

Later, with the increase in the amount of literature he read, he gradually understood the truth.

Materials, or all experimental subjects, and all interpretations of experimental results are actually conjectures, and theory always lags behind experiment.

It is impossible to create a perfect theoretical model out of thin air. If that is the case, just run a few supercomputers and calculate the optimal result.

The real situation is that researchers need to obtain a large amount of experimental data through continuous experiments, and then use these experimental data to establish a theoretical system.

But even with such an established system, there may still be many problems, and the theory needs to be constantly patched.

At the same time, there will be many phenomena that are difficult to explain. At this time, industry leaders will put forward many opinions.

When other researchers publish papers, they will also discuss these phenomena and put forward their own views.

This process is similar to debate.

In the end, there may be only one unified view left in the academic world, or there may be multiple views coexisting, or new theories will completely overthrow the previous theories in the future.

…………

A week later, Xu Qiu completed the project conclusion report.

At the same time, he also received a system prompt.

[The advanced task has been completed, 2000 points have been obtained, and the authority level is +1. 】

[The current permission level is level 3, and the simulation experiment system has been upgraded. 】

[Simulation Experiment System LV2:

It can scan the experimental equipment and consumables in a certain space, and completely simulate them in the system space. The host can conduct experiments in the simulated laboratory, consuming 100 credits per hour.

The current scannable space upper limit is 1000 cubic meters.

The built-in acceleration function is turned on in the simulation laboratory, and the current open magnification is 0.5-2 times. When using this function, the consumption points are 100 * magnification points per hour. 】

[Access advanced task: publish an SCI paper as the first author. Task reward: 2000 points, permission level +1. 】

【Scientific Research Auxiliary System】

Privilege Level: 3

Points: 6978

Tasks in progress: 3

Proficiency:

【Experimental operation class】

Preparation method:

Clean the substrate (fourth stage 40%/fourth stage 50%)

Solution preparation (fourth stage 40%/fourth stage 50%)

Spin coating (fourth stage 40%/fourth stage 50%)

Evaporation (fourth order 35%/fourth order 50%)

Characterization methods:

Photoelectric performance (fourth order 40%/fourth order 80%)

Optical performance (fourth order 5%/fourth order 80%)

Charge transport performance (third order 30%/fourth order 20%)

【Instrument Equipment Tools】

...

【Special class】

Literature reading (62% of the second level/50% of the fourth level)

Weekly Task I

Weekly Mission III

advanced task

##

I have accumulated a lot of points recently, but Xu Qiu doesn't plan to use them for the time being, it's better to be a hamster first.

On the one hand, there is no need to use the simulation laboratory now. Although the acceleration function is turned on, 2x speed is still not enough.

On the other hand, the proficiency of most operations has reached the fourth level or above, the error rate has been reduced to a very low level, and the proficiency can be accumulated slowly over time.

He has not encountered a major bottleneck in the experiment, and there is no need to use the fifth-order deduction to seek inspiration.

Unknowingly, the system has been with Xu Qiu for nearly two months, and the system is indeed just like its name, it is used to assist scientific research. It cannot conjure black technology far beyond the current human civilization out of thin air, nor can it turn him into a superman .

Xu Qiu's current achievements depend more on his own efforts.

At this stage, the system's help to him is not as much as when he first entered the scientific research circle. He can only hope that continuing to increase the authority level will bring surprises.

The next goal is to publish SCI papers.