Chen Zhou glanced at Dr. Wu who was smiling at him, but he was not in a hurry to answer the question.

He didn't think that Dr. Wu would ask himself a mathematics student about semiconductor materials research for no reason.

Chen Zhou's mind was constantly filtering and filtering information about this topic.

"The key to this project is mainly the preparation and doping of single crystal diamonds, and the problem we both help solve should be the problem in the doping process."

When Dr. Wu heard Chen Zhou's words, his eyes lit up. The young man was a little interesting and had strong ability to grasp key points.

"That's right." Dr. Wu nodded, "You two mainly use mathematical methods to help analyze and solve the problems of p-type doping, n-type doping and co-doping."

When Chen Jing heard the conversation between the two, he looked at Chen Zhou in surprise. Why are we reading different documents?

What are the doping things?

Just when Shen Jing was confused, Peng Fei had already brought Pan Shiyan over.

"Dr. Wu, Shi Yan is here."

Pan Shiyan first glanced at Chen Zhou and the others, focused on Chen Zhou for two seconds before saying to Dr. Wu: "Teacher, then I'll take them to get to know each other first."

Dr. Wu nodded: "Okay, I'll go to another research team to take a look first. Shiyan, please take them to familiarize themselves with the environment, Peng Fei, you go and prepare for the afternoon experiment."

"Okay, Dr. Wu (teacher)." several people replied at the same time.

After explaining the matter, Wu Xinyue left the laboratory.

She is responsible for two issues at the same time, and one is about the new block thin magnetic semiconductor.

"Shiyan, then I'll do it first, and Chen Zhou and the others will leave it to you." After Peng Fei said that, he smiled at Chen Zhou and the others, and then went to do his own.

He originally thought Wu Xinyue would hand over the two of them to him, but he didn't expect to call Pan Shiyan.

However, it is not surprising that Pan Shiyan is Wu Xinyue's favorite disciple, so it is obviously more appropriate for her to take Chen Zhou and the others.

Pan Shiyan looked at Chen Zhou and the others and introduced herself: "I am your senior sister, from the Department of Physics of Yan University."

"Chen Zhou, from the Department of Mathematics of Yan University, Hello, senior sister!" Chen Zhou said.

"Hello, senior sister, my name is Chen Jing, and I am also from the Department of Mathematics of Yan University." Chen Jing also said.

Pan Shiyan nodded and looked at Chen Zhou: "Chen Zhou, I know you, the new generation of genius mathematician of Yan University, have proved the hail conjecture."

Chen Zhou smiled: "Senior sister has gone too far."

Pan Shiyan refused to comment and said, "Let's go and take you to see."

Upon hearing this, Chen Zhou and Shen Jing followed.

Pan Shiyan didn't say much, and she simply introduced various instruments and equipment along the way, as well as the experimental content of this topic.

Apart from that, I didn't say a word.

Chen Zhou and Shen Jing looked at each other and both thought that this senior sister was quite cold.

Chen Zhou and Shen Jing followed silently, not daring to speak much.

After walking for a long time, it was not until he arrived at the experimental area for single crystal diamond preparation that Pan Shiyan asked: "The technological innovation speed of semiconductor materials and devices has always followed Moore's Law and has contributed to the development of the information industry."

"With the continuous development of the semiconductor industry, more and more semiconductor materials are being used in electronic devices. So do you know, why should we use diamond this time?"

Chen Zhou and Shen Jing looked at each other again, and Chen Jing gave Chen Zhou a look and gave it to you, I don’t understand these...

Chen Zhou was just wondering, why do both the master and the apprentice like to ask questions?

But it's all such simple questions. Is it difficult to ask?

If I think so, Chen Zhou will definitely not say it. What if this cold senior sister...

Retracting his thoughts, Chen Zhou said softly: "Ordinary semiconductor materials are subject to their own properties, and their applications under high temperature conditions will be greatly restricted."

"Diamond semiconductor devices have excellent electrical properties such as high carrier mobility, high thermal conductivity and low dielectric constant, and can operate in very harsh environments such as high frequency, high power, high temperature and high pressure."

"Diamond can exhibit n-type conductivity and p-type conductivity through doping, and its performance will far exceed that of gallium arsenide, gallium nitride and silicon carbide. It is currently the most promising wide bandgap high-temperature semiconductor material."

Pan Shiyan glanced at Chen Zhou with a little surprise, but she didn't expect that this person knew a lot.

"That's right. But not only that," Pan Shiyan added. "Because the diamond band gap is very wide, in the semiconductor field, it can be used as active device materials, such as field effect tubes and power switches, as well as Schottky diodes like

Such passive device materials.”

After a pause, she looked at Chen Zhou and asked again: "You just said that diamond is a wide band-gap high-temperature semiconductor material. How do you see it?"

Chen Zhou glanced at Pan Shiyan and thought about it. Since you have opened up the topic, I'm not polite.

Chen Zhou said: "The band gap width of diamond is 5.5ev, its high carrier mobility is 4500cm2/(v·s), holes are 3800cm2/(v·s), and its high thermal conductivity is 22w/(

cm·k), high breakdown electric field is 10mv/cm."

"While its electron carrier saturation rate is between 1.5×10^7 and 2.7×10^7cm/s, and the hole carrier saturation rate is between 0.85×10^7 and 1.2×10^7cm/s,

The low dielectric constant is 5.7.”

“Based on these excellent performance parameters, diamond is considered the most promising material for the preparation of next-generation high-power, high-frequency, high-temperature and low-power loss rate electronic devices.”

After saying this, Chen Zhou paused for a moment and continued: "Although the reserves of diamonds are very rare, people had already synthesized artificial diamonds with graphite in the 1950s."

"And the structure of artificial diamond and natural diamond is the same and have similar performance, which can solve the problem of diamond origin well."

"In addition, in the 1980s, diamond films were prepared on non-diamond substrates by establishing a hot wire chemical vapor deposition device, namely the HFCVD method. By the mid-1990s, diamond film deposition theory had been relatively perfect."

"Although the research on diamond films was not smooth due to the constraints of preparation methods from the late 20th century to the early 21st century, the emergence of repeated growth methods, three-dimensional growth methods and mosaic methods promoted the preparation of large-sized diamonds.

develop."

With Chen Zhou's narration, Shen Jing beside him was already stunned.

Good guy, are you really a major in mathematics?

No, are you really from our physics and mathematics majors?

Why are the chemical methods so familiar?

Of course, what surprised Chen Jing even more was that why he didn’t see these contents in the literature?

No matter the project information sent by Forty-three or the project information sent to him by Chen Zhou, there is no...

In addition to Chen Jing, the researchers who were originally doing the experiment also looked back at Chen Zhou with surprise.

Didn’t you say you were looking for someone from Yan University’s mathematics department to help?

How do I think this is from the chemistry department?

Pan Shiyan, who asked the question, was also shocked by Chen Zhou's fluent narrative.

She originally wanted to teach two newcomers, but she didn't expect that Chen Zhou would teach her again.
Chapter completed!