Civilization Template

Chapter 148 MOCVD
Fengtian Scientific Instrument, large conference room on the third floor

"How is it? Xiao Chen, did you rest well?" Factory Manager Liu Minxue asked with concern.

"I'm fine." Chen Quan's face has returned to normal. "It's probably because I spent too much time in the car yesterday, and I didn't have enough rest. It will be fine after a while."

"That's good. That's good." Several section chiefs of Keyi breathed a sigh of relief.

During the visit, Chen Quan's complexion became worse and worse.This made the hearts of the masters who had high hopes for the investigation hang.They couldn't figure out whether Chen Quan's pale complexion was due to physical reasons or simply dissatisfaction.

"I hope this accident will not affect the evaluation of our factory."

Director Liu was still a little worried.

"It's okay, Chen Quan's body is like this. After all, he is young and has a weak foundation." Wang Zhan comforted him cheerfully. "But young people recover quickly. Don't mind."

"Okay, let me reintroduce."

Liu Minxue coughed, attracting everyone's attention.

Founded in 1958, Fengtian Science and Technology Co., Ltd. is a pioneer in the field of integrated circuit equipment and vacuum equipment.In the age of all self-reliance, there has been a glorious history.

With the opening of the country, under the impact of dimension reduction of imported products, the form of Fengtian Science and Technology Co., Ltd. has taken a sharp turn for the worse.

With the abolition of the dual-track price system, the economic situation of Fengtian enterprises has generally improved in the past two years, so Fengtian Scientific Instrument is also actively transforming, such as entering the agricultural machinery market, but the effect is getting worse and worse.

"I don't know, are our introductions detailed enough?" Factory Director Liu Minxue finally asked.

"Yes, yes. Enough, enough."

Wang Zhan has been in Fengtian for two days, and he has a good impression of Keyi.

In addition to the strength of the manufacturer itself, there are also considerations of easy cooperation.After all, other equipment manufacturers are too far away from the ice city, and communication is inconvenient.Not to mention the waste of time, long-distance train tickets are also a kind of in short supply, and they are not just bought at will.

"In the field of MOCVD, what accumulation do you have?"

Chen Quan asked suddenly.The introduction of Fengtian Technology always revolves around PVD (Physical Vapor Deposition) products.

"MOCVD?"

Liu Minxue was a little surprised, and then turned his attention to Wang Qingshan, the chief of the technical department.He is not familiar with this field.

"As far as I know, MOCVD (metal organic chemical vapor deposition) technology is not mature, and there seems to be no similar products on the market."

Wang Qingshan was a little uncertain.

MOCVD is a new technology developed on the basis of VPE (Vapor Phase Epitaxy).

In MOCVD technology, reactant gases are combined at high temperature and the resulting material is deposited on the substrate.The product containing the desired chemical elements then reacts with the surface of the hydride to form the epitaxy of the material and compound semiconductor.

Unlike traditional silicon semiconductors, these semiconductors can contain combinations of Group III and V, II and VI, IV or IV, V and VI elements.

Theories related to MOCVD were put forward very early, but it is only in recent years that it has really entered into practical verification.Some manufacturers have modified and customized MOCVD by themselves, but the related technologies and products are far from mature enough to be commercially available.

"You want to abandon PVD in MEMS and switch to MOCVD equipment?" Wang Zhan was also surprised when he heard the news. "Is there any new discovery? Does the MEMS process need to be greatly modified?"

"Well, how should I say it?"

Chen Quan was lost in thought.

The reason why blue LEDs have not been mass-produced 20 years after red and green LEDs were launched is because of insurmountable difficulties.

In the field of blue LEDs, the earliest research of human beings took the GaN (nitride) route.But the synthesis of GaN is too difficult.

In addition, researchers also found that GaN has a high defect (dislocation) density (according to the understanding of traditional semiconductor physics, it is impossible for GaN to emit strong light with such a high dislocation density), so most people have turned to other technical direction.

Currently on the market, some low-brightness blue LED products are sold, which take the SiC (silicon carbide) route.But this route, in principle, does not have high luminous efficiency.

Therefore, a large number of researchers have turned to ZnSe (zinc selenide) materials. ZnSe materials, both in theory and in actual luminous efficiency, have made great progress, but this route always faces a headache, that is, product life.

Several technical routes of blue LED, each with its own different difficulties, are all stuck.

And "he" solved the problem of GaN preparation by customizing MOCVD and finding another way.

"Chen Quan and I want to customize two MOCVD equipment and do some preliminary research. This part of the research work will not affect the construction of the MEMS production line." Qu Yanqiu, who knows the inside story, simply took the conversation.

"If it doesn't affect the construction of MEMS factories, then there will be no problem."

Wang Zhan let out a long breath.His job is also difficult if the craft is constantly changing.

"And I hope that the manufacturing of this customized equipment will be handed over to Fengtian Science and Technology."

Chen Quan added.

MOCVD only solves the problem of GaN preparation. A series of subsequent technical difficulties and solutions can only be explored after the equipment is in place. He doesn't want to make extra troubles.

"Oh? Good! Of course! We welcome you warmly."

Several people in Fengtian Keyi were stunned at first, and then overjoyed.

"But MOCVD, we don't have relevant production experience." Wang Qingshan from the technical department quickly responded.

"Without experience, can't we produce?"

Liu Minxue quickly took over the conversation. "Which of the products in our factory doesn't start from scratch? Isn't our agricultural machinery also developed by ourselves?"

"MOCVD can be different."

Wang Qingshan refused to give up. "There is very little information about MOCVD in China. As far as I know, many foreign companies buy ready-made VPE equipment for modification. But VPE equipment is embargoed for us, and we can't buy it even if we want to buy it."

"."

Everyone turned their attention to Chen Quan again.

"Or, let's put aside the MOCVD thing first? There is no need to force things that are not mature. After all, the domestic conditions are like this. Things that are easy for foreign equipment manufacturers to do domestically, it may not be necessary."

Wang Zhan smoothed things over. "Let's go back to the problem of MEMS device selection."

"Yes, yes. Let's discuss the production line first." Factory manager Liu Minxue gave his technical section chief a hard look, and brought his expectant gaze and smile back to the conference table.

". From the perspective of technical parameters and indicators, your factory's products basically meet our expectations. But I want to emphasize again that our products are to be applied to the aerospace and aviation fields. Therefore, parameter indicators are not the first Quality and stability are the most important."

After a long discussion, Wang Zhan finally made the concluding remarks.

"Regarding the quality, please rest assured that there will be no problems. After all, we are an old factory with many years of history."

Liu Minxue patted his chest.

The atmosphere in the conference room quickly became harmonious.

"The cafeteria is not ready yet." Secretary Liu came back to report.

Liu Minxue asked: "Shall we take a break first? Or go to the workshop and then go around? Will you give us suggestions?"

"What do you think?" Wang Zhan turned to seek Chen Quan's opinion.

In the discussion of the equipment parameters just now, Chen Quan seldom spoke, but Qu Yanqiu's attitude was very positive, and he kept asking questions.

Chen Quan did not answer the question, but turned his attention to Wang Qingshan, the chief of the technical department. "Can I borrow a drawing tablet?"

"Drawing tablet? What do you want a drawing tablet for?"

Wang Zhan was surprised. ".Are you going to design your own MOCVD equipment?"

Although Wang Zhan and Chen Quan had contact several times, they were far from being familiar with each other.Regarding Chen Quan's stubborn opinion, Wang Zhan has some opinions.

It is so easy to design a brand new device.

But he doesn't like to say much, especially in front of outsiders.

"Try it."

Chen Quan didn't say anything to death.Although he had the memory of "him" as a base, Chen Quan hadn't even touched the edge of the drawing board.

But now is definitely not the time to give up.This opportunity can be said to be fleeting.Returning to Fengtian Scientific Instrument again may not necessarily be when it happened.

If you can’t do what you want, take away the MOCVD in your memory, and the blue LED will have no hope at all.

"That?"

Liu Minxue asked for opinions with his eyes, and found that Chen Quan had no intention of giving up, and Wang Zhan didn't speak, so he had to order. "Xiao Liu, find someone to carry a drawing board."

"Pick up my pair."

Wang Qingshan stood up and followed out. "Mine is a magnet drawing tablet, and it's in better condition."

Soon, a pair of No. [-] project drawing boards commonly used by designers was carried into the large conference room by four people.

"This is a movable T-square. Just pull it like this, and it will be on the guide rail." Wang Qingshan introduced his baby to Chen Quan.

"Students from the Department of Electronics at the University of Technology, do you also want to learn mechanical drawing?"

Wang Zhan was behind, asking Qu Yanqiu in a low voice.

"Students in the Department of Electronics don't have drawing classes. But Chen Quan, you know that. He can always do something unexpected, can't he?" Qu Yanqiu could only answer in this way.

……

Technical section chief Wang Qingshan looked at Chen Quan, fiddling with various accessories on the drawing board curiously. At first glance, he looked like a brand new player who had never been in contact with mechanical design.

"Why don't you tell me what you think, and I'll draw a picture."

But under everyone's surprised eyes, Chen Quan picked up the pen and lay down on the drawing board.

(End of this chapter)