Zhou Linlei went to Anhe to work as a temporary chief engineer for Hongze Motor Factory, and also helped Qin Hai sing a drama to pit Liu Xuping, all because Qin Hai promised to solve the relevant technical problems about aircraft carrier catapults for him. Now that he has done everything he should do, it is time to ask Qin Hai for a return.

"Mr. Qin, I'm a dignified aircraft carrier engineer, and I've come to play tricks for a small motor factory like you, how can you, the chairman, have to express it?" Zhou Linlei tried his best to pretend to be very experienced in the rivers and lakes, and said to Qin Hai. However, his slightly flushed face revealed the truth about him, and this old man was really not good at this kind of bargaining trick.

"Zhou Gong said it very well." Qin Hai couldn't help but smile and said, "In order to thank Zhou Gong for helping us for these helps, our group has specially prepared some local products from Anhe, and when Zhou Gong leaves, I will arrange someone to send you to the airport and help you complete the consignment, absolutely no effort from Zhou Gong." ”

"Souvenirs?" Zhou Linlei waved his hand again and again, "I don't want this." ”

"What, does Zhou Gong ask for cash? Oops, this is a bit inconvenient for us financially, or should I let the accountant think of a way? Qin Hai pretended to frown and said, in fact, there is nothing difficult about this, but Qin Hai knows that it is absolutely impossible for Zhou Linlei to accept cash remuneration, even if Qin Hai wants to give it, Zhou Linlei will not ask for it, so he deliberately said this.

Sure enough, when Zhou Linlei heard the word cash, he was even more embarrassed, and his face turned purple: "Xiao Qin, don't do this, I was instructed by Ji Lao to help you, this is also my job, if I take your money, it will be a violation of discipline, this is absolutely not allowed!" ”

"You don't want souvenirs. And don't want cash, so what does Zhou Gong just say to mean it? I don't really understand. Qin Hai said.

Zhou Linlei said sneeringly: "Isn't this a very clear thing...... You have promised me a lot of things from Ji Lao, and now that your problem is solved, shouldn't you also think about how to help our troops solve the problem? ”

"Haha, that's what happened. Zhou Gong, you said this earlier, don't you have it? Qin Hai said with a smile.

"You Xiao Qin, I knew you would definitely understand, you just deliberately teased me, an old man, right?" Zhou Linlei pretended to be annoyed and reprimanded, he is over 50 years old this year, and he can claim to be an old man in front of Qin Hai. Back then, everyone was proud of being old from time to time.

Qin Hai knew that Zhou Linlei was an honest man, and he was all about his aircraft carrier career. So it's inconvenient to pretend to be stupid anymore. He nodded and said, "Zhou Gong, don't worry, as soon as I returned to Anhe a few days ago, I had already started to arrange this matter." I have learned that the research of graphite lubricating materials has now made a great breakthrough, and it is expected that the finished product will be industrially produced within a year. The research work on supercapacitors has now been arranged by a team. Superconductivity research is being carried out by the Superconductivity Research Center of Jingcheng University. When I was in Beijing, I talked to Professor Chen Zongze. He's confident. As for rare earth permanent magnet materials......"

"I have already communicated with Mr. Sun Yuzhi, and the cerium-based permanent magnet material he is working on now is indeed very potential, and I am very confident in it." Zhou Linlei replied for Qin Hai.

Qin Haidao: "Yes, I also talked to Professor Sun, and he said that he already understands your needs. And will quickly shift their energy to this area. ”

"That's great!" Zhou Linlei's face bloomed with joy, "I am at a loss for so many problems, I can't imagine that you can solve them here in Xiao Qin, no wonder Ji Lao values you so much." ”

"Huh. Zhou Gong, you haven't finished asking, don't you care about IGBT's questions? Qin Hai asked.

"IGBT ......" Zhou Linlei shook his head, "This difficulty is a bit big, and it is all pressed on you Xiao Qin, and I can't bear it anymore." You don't know, after talking to you at Ji Lao, I sent a report to the research institute, proposing to purchase some IGBT components abroad, and the research institute has reported this report to the Commission of Science and Technology. IGBT technology, we will definitely master in the end, but in the short term, it is still feasible to make up for the lack of technology through guò procurement. ”

The so-called IGBT is the abbreviation of "insulated gate bipolar power tube", in the simplest words, it is a kind of high-power electronic switch, which can control the voltage on the gate through guò and can realize the conversion of conduction and turn-off. Compared to mechanical switches, electronic switches can respond up to hundreds of thousands of times per second without the fear of damage due to repeated switching. The transistor in the radio is also an electronic switch, and the IGBT can be regarded as a special type of transistor, which is characterized by higher withstand voltage, higher current, faster speed, better reliability, and so on.

The concept of IGBT was first proposed in the late 70s, and was successfully developed by GE and RCA in the early 80s. Since 1986, IGBT has been officially produced and gradually formed into a series. In the years that followed, the technology of IGBT was constantly updated, and in 1988 the first generation appeared, called the plane penetrating type; In 1990, the second generation appeared, which is an improved planar penetrating type; In 1992, it was the third generation, that is, the groove type; In 1997, a fourth generation appeared, called the non-penetrating type; In 2001, the electric field cut-off type appeared; In 2003, a trench electric field cut-off type appeared......

There is a reason why semiconductor manufacturers are constantly innovating in IGBT technology, that is, IGBT is widely used. From rail transit, aerospace, electric power, petroleum and other pillar sectors of the national economy, to consumer electronics such as inverter home appliances, digital cameras, and induction cookers, IGBT can all be found. Such a huge market can naturally attract countless heroes from all over the world to compete for their waists.

However, it is not easy to master the manufacturing technology of IGBT. IGBT is a device with a very complex operating principle, integrating the basic structure of almost all semiconductor devices. To manufacture IGBT devices that meet the requirements, a series of microelectronic manufacturing processes such as lithography, oxidation, ion implantation, thermal diffusion, and deposition polysilicon are involved. In order to reduce the on-resistance, engineers continue to reduce the size of the cell and increase the number of cells connected in parallel, so the manufacturing process rule of IGBT has been reduced from 5 microns to 0.5 microns, and the wafer size has been increased from 4 inches to 6 inches and 8 inches.

All these production processes were very difficult for China at that time, and there was almost no possibility of a breakthrough in the short term. In his opinion, Qin Hai can solve obstacles such as supercapacitors, superconducting coils, permanent magnet materials, etc., which is already very commendable.

Hearing Zhou Linlei's words, Qin Hai asked with a smile: "Zhou Gong, the IGBT device used on the aircraft carrier catapult is not an ordinary product, can it be sold to us abroad?" ”

"It's up to man." Zhou Linlei actually didn't have much confidence, so he could only reply, "I really can't buy high-power IGBTs, and there are some relatively low-power devices, which can barely meet the requirements when combined through the Guò series method." ”

"But in this way, we are still controlled by others, Zhou Gong really doesn't want to master the core technology of IGBT by himself?" Qin Hai continued to ask.

Zhou Linlei said: "How can you not want to? However, how big are the difficulties in semiconductor processing technology, Xiao Qin, do you understand? The difference between our country's semiconductor technology and foreign countries is not a star, and the technology in this area cannot be rushed up casually. ”

"Zhou Gong is right." Qin Haidao, "However, we can give it a try, IGBT has such a big market, let's give it to foreign countries, it's a pity." In the future, we will engage in our own power transmission and transformation technology, high-speed rail technology, if the IGBT thing is completely in the hands of others, people will casually stick our necks, we will be uncomfortable. ”

"What are you going to do?" Zhou Linlei became serious, he heard that Qin Hai was not just talking casually, but had some thoughts of his own.

Qin Haidao: "I plan to take a two-pronged approach, on the one hand, to mobilize domestic semiconductor research institutions and manufacturers to jointly tackle key problems, and on the other hand, to introduce technology to shorten the gap between us and foreign countries." In three to five years, we will initially form our own IGBT industry, first meet our own needs, and then consider catching up with the world's advanced level. ”

"I'm afraid the path of introducing technology won't work." Zhou Linlei asserted, "In fact, the Commission of Science and Technology has long had this idea, and I have also talked to several foreign companies that are leading in IGBT technology, hoping to introduce some technology." However, people are not willing to cooperate with us at all, and when it comes to technology transfer, there is no need to talk about it. ”

"I know that." Qin Haidao, "Foreign manufacturers see that we do not master IGBT technology, and hope to use this to sell us at a high price, of course, they will not be willing to transfer technology." But what if we just bought the company that owns the technology? So whether to transfer technology or not, isn't it up to us to have the final say? ”

"Buy?" Zhou Linlei smacked his tongue, "Xiao Qin, you're too whimsical, aren't you?" Several of the world's top IGBT manufacturers are giants in the semiconductor field, not to mention that they will not sell, even if they do, with our country's financial resources, they can't afford it, right? ”

"Haha, Zhou Gong, you're really right. However, we can't afford these top manufacturers, so can we try second-tier manufacturers? Qin Hai asked with a smile.

"What, Xiao Qin, do you have a goal?" Zhou Linlei heard what Qin Hai said and couldn't help but ask.

Qin Hai nodded solemnly and said, "That's right, I've already set my sights on a veteran British semiconductor company, Nice Company. (To be continued......) R1292