Xueba starts with change

Chapter 248 You Finally Learned to Read Documents

At 9 o'clock in the morning, laboratory 43.

Diamond p-type doping and n-type doping experiments officially started.

Chen Zhou and Shen Jing watched and studied.

Standing next to the two is Dr. Wu.

Naturally, it was impossible for Dr. Wu to do it himself. Peng Fei and Pan Shiyan were in charge of the entire experiment of Group 10.

Peng Fei is in charge of the n-type doping experiment, and Pan Shiyan is in charge of the p-type doping experiment.

Glancing at Chen Zhou beside him, Dr. Wu asked softly: "About the thin film preparation process? Do you have a clue?"

Chen Zhou nodded first, but then shook his head: "It's just that I have an idea."

Dr. Wu was taken aback for a moment, then said immediately: "This is a good thing, we already have a clue in just one day, it seems that we should really get married to Yan Da sooner."

Hearing Dr. Wu's words, Chen Zhou smiled embarrassedly, but did not explain anything.

But others didn't think so, so Pan Shiyan looked at her mentor with some taste.

And Hu Hengsheng, the person in charge of the diamond film preparation process, looked at Dr. Wu and Chen Zhou with meaningful eyes.

Chen Zhou recalled what Peng Fei said at dinner in the morning, and asked, "Dr. Wu, I heard from Mr. Peng that this is the 10th experiment?"

Dr. Wu naturally knew what Chen Zhou was asking. She explained: "It is indeed the 10th group. After the experiment is over today, I will copy all the experimental data to you. Considering that it is also the first time you have come into contact with the research topic of semiconductor materials. , so I preprocessed the data."

"Thank you, Dr. Wu." Chen Zhou was not surprised, Dr. Wu was very considerate.

At this moment, the experiment is progressing steadily between the two of them.

For the p-type doping of diamond, 43 uses the currently popular boron element for doping.

P-type doped semiconductor diamond single crystal is the material of choice for the preparation of high temperature and high power semiconductor components.

It has broad application prospects in the fields of electronics, nuclear energy and aerospace.

Speaking of which, boron-doped diamond is also used in the preparation of diodes.

In terms of performance, it is superior to ordinary diodes.

Not to mention, the diodes used in the particle accelerator experiment that Chen Zhou participated in were made of boron-doped diamond.

For a moment, Chen Zhou understood a sentence.

Hide the phrase "special attention" in the task.

[Special Note: You have already touched on multidisciplinary tasks, please be good at thinking and summarizing! 】

"Is this the meaning of interdisciplinary?" Chen Zhou thought about this sentence secretly.

The only connection between the two experimental subjects is the diode.

The diamond doping experiment in front of us is to better improve the performance and prepare good semiconductor materials and devices.

The particle accelerator experiment is to study the principle of intense pulsed high-power particle beams by replacing diodes.

Diodes are a top priority.

After thinking this through, Chen Zhou's eyes instantly brightened.

He had a vague guess that in the future multidisciplinary tasks, he might combine every subject he encountered.

Ultimately leading to a...

"future?"

For some reason, this word popped into Chen Zhou's mind.

He too was caught by the word right away.

Think about the hidden mission of diamond semiconductor materials, called "determining future changes".

Combined with the task of the particle accelerator experiment, it is called "experiment is an important means to discover the unknown".

Plus the description of the two tasks, doesn't it point to the future?
"Could it be..."

There was another layer of speculation in Chen Zhou's mind.

Chen Zhou shook his head slightly, retracted his thoughts, and stopped thinking about it.

This kind of illusory speculation is actually of little significance.

Because things like the future are always in the hands of the present.

Only what decision he makes now will affect what will happen in the future.

For example, if Chen Zhou chose to repeat his studies, the choice meant a change, and this change directly affected him now.

If he hadn't repeated his studies, he would not have been in Yanda University, nor would he have been in 43rd University.

Similarly, he is now at the 43rd Institute, and the topics he is working on are likely to affect a certain thing in the future.

Therefore, it is useless for Chen Zhou to think too much now, just do it well now.

"...Diamond is a group IV element. Its crystal structure can be regarded as a 1/4 set of two face-centered cubic structures translated along the body diagonal." Dr. Wu patiently explained to Shen Jing.

Shen Jing nodded, thoughtfully said: "The lattice constant of diamond seems to be 0.3567nm, the C—C bond length is 0.154nm, and the bond angle is 109°28'. The carbon atoms in it are based on sp3 hybrid orbitals and The four adjacent carbon atoms are covalently bonded to form a regular tetrahedral structure."

"Yes, because of this, we can achieve p-type and n-type doping by adding appropriate elements to diamond, thereby improving electrical properties and making it widely used as a semiconductor material in electrical devices." Dr. Wu Showing admiration, he looked at Shen Jing.

She didn't expect that apart from Chen Zhou, this Shen Jing seemed to be pretty good too.

In this way, those who are willing to spend time on the subject and understand the subject can really do the subject well.

Chen Zhou looked at the two people in front of him and couldn't help but smile.

This senior, after going back last night, he worked hard.

"Well, Dr. Wu, I read the literature that natural diamonds containing impurities generally exhibit p-type conductivity?" Shen Jing saw the encouragement in Dr. Wu's eyes, and the literature he read last night came in handy in an instant.

"Yes, natural diamond containing impurities will exhibit p-type conductivity, but there is no natural diamond with n-type conductivity. Because the defects of natural diamond will compensate the carriers, the doped impurity elements will not be effectively activated. This It is also the reason why n-type doping of diamond is very difficult."

Dr. Wu pointed to the experimental device in front of him, which is another MPCVD deposition device, and continued: "Among all bulk impurities, boron is currently recognized as an effective p-type impurity, phosphorus is the n-type impurity, and doped The experimental method is the microwave plasma CVD technology for preparing diamond films, which is the MPCVD method."

Hearing Dr. Wu's words, Shen Jing suddenly realized. He said, why is the experimental device in front of him the same as the experimental device for preparing diamond film that he saw yesterday?
Dare to feel that these two are almost a set of equipment.

Thinking of this, he thought of the subject that Chen Zhou took over. Could it be that this guy came here for the doping experiment?

Chen Zhou looked strangely at Shen Jing who suddenly looked at him, and didn't understand what he meant for a while.

Shen Jing blinked at him, as if saying, so you already knew that the two processes are the same, in fact, the reason you proposed to improve the preparation process is to prepare for the improvement of the doping experiment...

Of course, Chen Zhou still didn't understand what Shen Jing meant.

If he understood, Chen Zhou would probably say: "Senior, you finally learned how to read documents!!!"

(End of this chapter)