Chen Zhou first summarized the 10 sets of experimental data sorted by Chen Jing, and then began to refer to the research methods of the film preparation process.

First, use a large amount of literature to lay out all the problems and find solutions.

Combined with these 10 sets of experimental data from the Forty-three Institute, trial and error were conducted through the wrong question set.

Chen Jing was assigned the same task as Zhang Yifan by Chen Zhou.

That is, he needs to work with Fang Jieming to build an analytical model for doping experiments.

"The choice of p-doped boron source is b(ch3)3, and there should be no problem with this."

"Because b(ch3)3 is a boron source, it is conducive to the addition of boron atoms in the diamond lattice, and can improve the efficiency of boron incorporation..."

“…The influence of different diamond substrate crystals on the carrier mobility of prepared boron-doped diamonds…”

“…From the experimental data and literature, when preparing boron-doped diamond layers on (100), (110), and (111) surface single crystal diamond substrates, respectively…”

"…………The lattice defects of the (111) and (110) surface diamond substrates capture a large number of boron atoms, reduce the doping efficiency of boron atoms, and there is strong impurity scattering, making the mobility lower than (100) surfaces Diamond substrate…”

"so……"

Chen Zhou's thoughts were very clear.

All the content about p-type doped diamonds is constantly filtered and screened in his mind.

He is turning his thinking into a clear direction.

At the same time, the pen in Chen Zhou's hand was also constantly writing on the draft paper.

To outsiders, the content he wrote on draft paper may not be any regular.

But in Chen Zhou's eyes, he was approaching his goal step by step.

11 a.m.

Peng Fei came to this small office.

His excited expression had not completely faded, and his whole mental state was still extremely excited.

When Chen Zhou saw his appearance, he was a little worried. Will this person suddenly... fall down?

However, before Chen Zhou could speak, Peng Fei said first: "The tasks you assigned to me have been completed! I have sent all the information to the computer in front of you through the intranet!"

Chen Zhou minimized the page on the computer, searched it in the computer, and saw the information compiled by Peng Fei.

Chen Zhou looked up and said to Peng Fei: "I saw it."

Peng Fei walked to Chen Zhou at this time, and looked at Chen Zhou without saying a word.

Chen Zhou looked up at him strangely: "What's wrong?"

Peng Fei then said, "Is there anything else that needs help?"

Seeing the glittering in Peng Fei's eyes, Chen Zhou couldn't help but smile. Is this guy still addicted to helping him?

Shaking his head gently, Chen Zhou said, "No more for the time being."

When Peng Fei heard Chen Zhou's words, he felt a moment of loss.

Noting Peng Fei's expression changes, Chen Zhou thought for a while and added: "I suggest you go and rest first, there will be a lot of things later."

Upon hearing this, Peng Fei immediately looked at Chen Zhou and said quickly: "No problem! I will go to bed after dinner!"

At noon, Chen Zhou and Shen Jing also had a simple lunch in the canteen of Forty-three.

While having dinner, Chen Jing couldn't help but joke: "Chen Zhou, that boss Peng is almost your fan..."

Chen Zhou didn't say much about this.

It doesn’t matter if the fan is not a fan, it’s mainly because it feels like a helper. It’s so good~

After lunch, after a short rest of ten minutes, Chen Zhou sat in front of the computer again.

The problem of p-type doping is relatively simple, and he has already figured out his direction.

After thinking about it, Chen Zhou looked at Chen Jing and asked, "Senior, how is the analysis model you built?"

Chen Jing turned around and said, "It's still a little short. Because the model you request must be targeted, we have fully constructed the p-type doping, n-type doping and co-doping models with full consideration of all aspects of the experiment. But, it's soon."

"Okay." Chen Zhou responded and stopped talking.

Since Chen Jing and Fang Jieming have already followed, then let’s start with the trial and error of p-type doping in the afternoon.

Let’s put the issue of n-type doping and co-doping for the time being.

In the wrong question collection, the content of the theoretical research on p-type doping experiments has experienced a wave of parabola.

In the morning, when Chen Zhou first started to study p-type doping problems, the wrong question set was similar to that of a printing press.

He printed all the content Chen Zhou had seen until he reached a peak.

Later, as Chen Zhou deepened his research on the problem, the content recorded in the wrong question collection began to change.

Some old content is covered by new content, while some content disappears completely.

If old content is covered by new content, it means clear research direction.

The disappearing content means that Chen Zhou has solved the corresponding problem.

Now, another parabolic trend will be staged in the wrong question collection.

"Crystal surface selection of diamond substrate..."

"Reaction pressure, temperature..."

"Doing concentration of boron source..."

Based on the 10 sets of experimental data that have been completed by the Forty-Three Institute, Chen Zhou began trial and error in the p-type doping experiment.

An hour later, Chen Zhou took out a new piece of draft paper and wrote a series of experimental parameters on the draft paper.

Then he got up and walked to Chen Jing's side, and threw the draft paper to Chen Jing.

After Chen Jing got the draft paper, he was slightly stunned and immediately began to communicate with Fang Jieming to conduct model analysis.

Chen Zhou returned to his seat again and sat down.

Next, it is the turn of n-type doping and co-doping.

The problems of n-type doping and co-doping are much more difficult than p-type doping.

"The first time diamond n-type doping was achieved on a (111) surface diamond substrate, and the samples showed n-type semiconductor transmission characteristics over a wide temperature range..."

"At the temperature is 500k, the Hall mobility is 23cm2/(v·s)......"

"However, compared with the surface of (111) single crystal diamond substrate, the surface of the (100) plane has a degree of atomic level, the surface of the (111) plane oriented substrate is difficult to polish, and the surface of the (111) plane oriented substrate is difficult to polish, and the epitaxial film quality is also better than that of the (100) plane oriented substrate. (111) Surface substrate diamond…”

"But this is not absolute, and the problem of the crystal surface is not the most critical factor..."

Thinking of this, Chen Zhou stopped the pen in his hand and habitually pointed it on the draft paper.

This is a manifestation when Chen Zhou's thinking is blocked.

"Sorting through the literature again..."

Thinking of this, Chen Zhou put down the pen in his hand and moved his eyes to the computer screen again.

The scroll wheel of the mouse in your hand is constantly sliding, and the content on the screen is constantly changing.

But Chen Zhou's eyes didn't blink.

He has already passed these contents.

Now, I just look for some of the things I missed.

It is best to give yourself a blocked idea and open a gap.

"The doping concentration of phosphorus?"

“Electron scattering mechanism?”

"It's not the content of this part..."

“…1.7ev?”

"How come I forgot this data!"

When Chen Zhou saw this content, his eyes lit up instantly.

The reason why n-type doping, or phosphorus doping diamond is difficult.

It is because phosphorus atoms are larger than carbon atoms and it is difficult to embed diamond lattices.

When phosphorus atoms enter the diamond lattice, it will cause the lattice to be distorted, affecting the configuration, bond type and charge distribution in the diamond.

There are a large number of vacancies in phosphorus-doped diamonds, which can also form a phosphorus-vacancies defect with strong binding force with phosphorus atoms.

The energy level of this defect is located at about 1.7ev at the bottom of the diamond conduction belt, which can compensate the donor and hinder the ionization of phosphorus atoms.

This makes it difficult to obtain high-quality phosphorus-doped diamond films.

Although the energy level of phosphorus is 0.58ev below the conduction band bottom, this defect still exists.

“Fixing defects…”
To be continued...