After Zhou Xianming finished talking to everyone who participated in this research project about the research results they had obtained during this period, Liu Yuelin on the side said to others: "This time we are talking about the aging of perovskite solar cells.

This is the end of the research. The main work in the future is to summarize and compile this research into a paper..."

According to Liu Yuelin, this study on the aging of perovskite solar cells ends here.

Because the progress of this research project far exceeded Liu Yuelin's expectations, she also gave these researchers an extra bonus.

In addition, Liu Yuelin also specially invited Zhao Xiancai to have a meal together, and with them was Zhou Xianming.

"Professor Zhao, our project is progressing so fast this time and will be completed in less than half a year, thanks to you..."

While eating, Liu Yuelin said to Zhao Xiancai.

"I didn't help much, the main credit goes to Zhou Xianming.

He was the first to think of applying the acceleration stability experiment concept of directly calculating the acceleration ratio to the research of perovskite solar cells. This method also provides a great help for us to reasonably predict the service life of this kind of photovoltaic cells.

.

Moreover, the experimental plan design and some characterization and analysis he conducted in this study are all based on the understanding of the degradation mechanism of PSC (perovskite solar cells) in previous work.

He designed dozens of different pscs..."

Zhao Xiancai began to praise Zhou Xianming.

In fact, what Zhao Xiancai said is correct. In this research on the aging of perovskite solar cells, although Liu Yuelin is the leader of the research team, the one who deserves the most credit is Zhou Xianming, who spends every day in the laboratory.

It’s no wonder that Zhou Xianming will be the first author of the final paper on this experiment, and Liu Yuelin will be the corresponding author.

"Although this time our team tested the lifespan of different PSCs and passed layer-by-layer selections, the new PSC structure took shape.

The dozens of different PSCs we tested were all designed by researcher Zhou Xianming, but from his initial involvement with PSCs to subsequent screening, you also helped us a lot.

Without you, it would probably take at least another three or four years for us to achieve the current experimental results.

Professor Zhao, you don't have to be too modest.

Those of us who do experiments are different from you who do pure mathematics. The saying "time is money" couldn't be more appropriate for us.

Without you, we would have spent three or four more years and I don’t know how much more money we would have spent.

Moreover, if our experimental results are completed and published by other laboratories first, then all the funds we have spent over the years will be in vain."

Liu Yuelin said to Zhao Xiancai.

Because they now know the results of this research on the aging of perovskite solar cells, Liu Yuelin also believes that even if she does not invite Zhao Xiancai to join her research group this time, they can still complete it in the end just relying on Zhou Xianming.

Research on this topic has led to the current experimental results.

But without the data analysis results provided by Zhao Xiancai and the speculation of the model he established, their results would indeed be delayed for several years.

Since Liu Yuelin had already said this, Zhao Xiancai didn't say anything more, but continued to chat with them about this experiment on perovskite solar cells.

"Professor Zhao, are you planning to continue studying perovskite solar cells with us in the future?"

Liu Yuelin asked Zhao Xiancai again.

Based on the information previously obtained from Professor Gong Qi of the School of Physics at Peking University, and combined with Zhao Xiancai's performance in his research group during this period, Liu Yuelin obviously also knew that Zhao Xiancai was a treasure, and he could master mathematics very skillfully.

Knowledge applied in research on perovskite solar cells.

Moreover, Zhao Xiancai’s application of mathematical knowledge is likely to be more than just perovskite solar cells.

If she could be bound to Zhao Xiancai, then the research speed of her future research group projects would probably be increased several times.

“Are you ready to continue researching perovskite solar cells?”

After hearing Liu Yuelin's question, Zhao Xiancai did not immediately answer Liu Yuelin's question, but asked a question instead.

"Well, researcher Zhou Xianming will still be responsible for the subsequent research."

With that said, Liu Yuelin looked at Zhou Xianming, meaning that Zhou Xianming himself would be responsible for the follow-up research content and plans on perovskite.

"Professor Zhao, you also know that last time we designed a new all-inorganic two-dimensional buffer layer to block the movement of chemical components between the perovskite light absorption layer and the charge transport layer, which greatly improved the life of the PSC.

…”

After seeing Liu Yuelin looking at him, Zhou Xianming quickly said to Zhao Xiancai.

Liu Yuelin's research group has been focusing on the stability research of perovskite solar cells for a long time. The purpose is to understand the degradation mechanism of perovskite solar cells and develop strategies to improve their stability on this basis.

After this time through layer-by-layer screening, they determined the prototype of the new PSC structure. They also noticed that all its functional layers were inorganic materials, and each functional layer was stable on its own.

But this is not the end of the world.

Because the solar cells assembled with it are not stable, this is because although all the materials are stable, there will still be chemical interactions between adjacent functional layers, which will lead to the degradation of the battery.

Therefore, in order to prevent the various functional layers from interacting with each other and causing PSC degradation, they designed such a buffer layer with a thickness of only a few atoms.

"...So although the current life of PSCs does not meet commercial standards, the lifespan of PSCs has been gradually improved. This time we have increased its lifespan to several thousand hours, which is a very big progress.

Once our experimental results are announced, they will definitely cause quite a shock in the field of solar cells..."

Zhou Xianming began to talk to Zhao Xiancai about his subsequent research plans for perovskite solar cells.

Zhou Xianming believes that there are four main technological breakthroughs required for the commercial development of psc.

These four points are to solve the PSC life problem, optimize the large-volume and large-area production process, further reduce the PSC manufacturing cost, and commercialize "special" PSC. What he plans to study later is still about the PSC life problem.

“I plan to continue to enrich the accelerated aging test system of psc to adapt to market commercial needs, and aim to further improve the efficiency and stability of psc to make it more suitable for commercial needs.

Professor Zhao, the accelerated aging stability test system using temperature can provide a reference for research on accelerated aging of PSC using other parameters, as well as for the development of accelerated aging test systems for other types of solar cells.

If you can join us, I believe our subsequent research and development progress will be greatly accelerated."

Zhou Xianming said.

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