Volume 1: Student Life Chapter 248 You Finally Learned to Read Literature
9 o'clock in the morning, in the laboratory of Institute 43.
Diamond p-type and n-type doping experiments officially began.
Chen Zhou and Shen Jing watched and learned.
Standing next to the two of them was Dr. Wu.
Naturally, Dr. Wu could not do it himself, so the entire experiment of Group 10 was in charge of Peng Fei and Pan Shiyan.
Peng Fei was responsible for the n-type doping experiments, and Pan Shiyan was responsible for the p-type doping experiments.
Glancing at Chen Zhou beside him, Dr. Wu asked softly, "What about the film preparation process? Do you have any idea?"
Chen Zhou nodded first, but then shook his head: "It's just an idea."
Dr. Wu was slightly stunned, then said, "This is good news. We already have some clues after just one day. It seems like we should have asked Yan University for the person earlier."
Hearing what Dr. Wu said, Chen Zhou smiled embarrassedly but did not explain anything.
But others didn't think so, so Pan Shiyan looked at her mentor with a bit of jealousy.
Hu Hengsheng, the person in charge of the diamond film preparation process, looked at Dr. Wu and Chen Zhou with a meaningful look.
Chen Zhou remembered what Peng Fei said during breakfast, so he asked, "Dr. Wu, I heard from Engineer Peng that this is the 10th experiment?"
Dr. Wu naturally knew what Chen Zhou was asking about. She explained, "It is indeed Group 10. After the experiment is over today, I will copy all the experimental data to you. Considering that this is also your first time to engage in research on semiconductor materials, I have pre-processed the data."
"Thank you, Dr. Wu." Chen Zhou was not surprised. Dr. Wu was very thoughtful.
At this moment, the experiment was progressing steadily while the two were talking.
For the p-type doping of diamond, the 43rd Institute uses the currently popular element boron for doping.
P-type doped semiconductor diamond single crystal is the preferred material for preparing high-temperature, high-power semiconductor components.
It has broad application prospects in the fields of electronics, nuclear energy, aerospace, etc.
By the way, 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 distant past, the diodes used in the particle accelerator experiment in which Chen Zhou participated were made of boron-doped diamond.
In an instant, Chen Zhou understood something.
The phrase "pay special attention" in the hidden mission.
[Special note: You have touched upon multidisciplinary tasks, please be good at thinking and summarizing! ]
"Is this the meaning of multidisciplinary research?" Chen Zhou pondered this sentence secretly.
The only connection between the two experimental topics is the diode.
The diamond doping experiment at hand is to better improve performance and prepare good semiconductor materials and devices.
Particle accelerator experiments study the principles of intense pulsed, high-power particle beams by replacing diodes.
The diode is the most important.
After realizing this, Chen Zhou's eyes instantly brightened.
He had a vague guess that future multidisciplinary tasks might cross-combine every subject he encountered.
Eventually leading to a...
"future?"
Somehow, this word popped into Chen Zhou's mind.
He was also immediately caught by this word.
Think about the hidden mission of diamond semiconductor materials, which is called "determining future changes."
Combined with the mission of particle accelerator experiments, it is said that "experiments are an important means of exploring the unknown."
Adding the description of the two tasks, doesn’t it point to the future?
"Could it be... "
Chen Zhou had another layer of speculation in his mind.
Chen Zhou shook his head slightly, withdrew his thoughts and stopped thinking about it.
This kind of vague speculation is actually meaningless.
Because the future is always in the hands of the present.
Only the decision he makes now will affect the future.
For example, Chen Zhou chose to repeat his senior year. Choice means change, and this change directly affects his present self.
If he had not repeated his grade, he would not be in Yanda University, nor would he be in No. 43 Institute.
Similarly, the research topic he is currently working on at the 43rd Institute may very likely affect something in the future.
Therefore , it is useless for Chen Zhou to think too much now. Just do your best now.
"...Diamond is a Group IV element. Its crystal structure can be viewed as consisting of two face-centered cubic structures that are shifted 1/4 along the diagonal of the body." Dr. Wu patiently explained to Shen Jing.
Shen Jing nodded and said thoughtfully: "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 covalently bonded to the four adjacent carbon atoms through sp3 hybrid orbitals to form a regular tetrahedron structure."
"Yes, that's why we can achieve p-type and n-type doping by adding appropriate elements to diamond, thereby improving its electrical properties and making it widely used as a semiconductor material in electrical devices." Dr. Wu looked at Shen Jing with appreciation.
She didn't expect that besides Chen Zhou, this guy named Shen Jing seemed to be pretty good too.
Only those who are willing to spend time on the subject and understand the subject can truly do the subject well.
Chen Zhou looked at the two people in front of him and couldn't help but smile.
This senior student put in a lot of effort after returning home last night.
"Well, Dr. Wu, I read in 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 immediately came in handy.
"Yes, natural diamonds containing impurities will exhibit p-type conductivity, but there is no natural diamond with n-type conductivity. This is because the defects in natural diamonds will compensate for the carriers, so that the impurity elements that are doped cannot be effectively activated. This is also the reason why n-type doping of diamonds is very difficult."
Dr. Wu pointed to the experimental device in front of him, which was another MPCVD deposition device, and continued: "Among all the bulk impurities, the currently recognized effective p-type impurities are boron and the n-type impurities are phosphorus. The experimental method of doping is the microwave plasma CVD technology for preparing diamond films, that is, the MPCVD method."
After hearing what Dr. Wu said, Shen Jing suddenly realized. He was wondering why the thing being used for the experiment in front of him was the same as the experimental device for preparing diamond film that he saw yesterday?
It turns out that these two are similar sets of equipment.
Thinking of this, he thought of the project that Chen Zhou had taken on. Could it be that this guy came here for the adulteration experiment?
Chen Zhou looked at Shen Jing strangely as he suddenly looked at him. He didn't understand what he meant for a moment.
Shen Jing blinked at him, as if to say, "So you already knew that these two processes are the same. In fact, you proposed to improve the preparation process in order 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 literature!!!"
