Chapter 763 Combination of high and low
Gao Zhendong was very happy. A familiar person is good: "Well, that's great. Your first task is to make monocrystalline silicon with a purity of not less than 5 nines and cut it. After that, a silicon wafer with a crystal orientation of (100) is obtained. The area of the silicon wafer is 2*4cm and the thickness is 0.2~0.5mm, but the thickness must be uniform. Consistent. The requirements for crystallographic orientation are not very strict. The dislocation density and minority carrier lifetime should be as good as possible, but there are no very high requirements. Is there any problem? "
Only then did Tang Shaohui know what Chief Engineer Gao said. The assigned work should not be too much beyond your ability, but you always need to work hard to achieve it." What does it mean?
He has not trimmed the silicon wafers with crystal orientation (100).
But how difficult is it to say this? No, he has never made monocrystalline silicon wafers with crystal orientation (100) before. The biggest reason is that there is no demand, not because the technology is difficult.
In particular, Chief Engineer Gao was very considerate in relaxing some marginal parameters and only focusing on core issues.
It seems that General Engineer Gao is very clear about the direction and route of this subject. He has reached the point where he is comfortable with it and can clearly grasp the main and secondary contradictions. This is very important in the preparation of basic materials for most new subjects. They are rare here, and usually the prices are sky-high. I wish they had as high a performance as possible in all aspects.
As a result, the requirements were too high and comprehensive, and in the end nothing was done well.
The request of Chief Engineer Gao is very reasonable. If you know what you want and don’t want, you can concentrate your energy and resources in the most important direction. The success rate is actually much higher than grabbing eyebrows and beards.
Comfortable! It’s really comfortable to work on projects under Chief Engineer Gao!
"Okay, Mr. Gao, then I'm going to get started." Tang Shaohui was very positive.
Gao Zhendong called Liang Fafa, who is now in charge of the daily work of the research office of the third factory. The rest is for them to communicate for the time being. Anyway, the factory has such things as single crystal furnaces. This step is not needed. Gao Zhendong communicates too much.
Solar panels can be made of polycrystalline silicon, but Gao Zhendong’s primary goal is to use them in space, so polycrystalline silicon cannot be used. The photovoltaic efficiency deteriorates seriously under ultraviolet rays. There is no problem in using it in the atmosphere. Outside, facing ultraviolet rays directly is a lot of fun.
However, we should not underestimate polycrystalline silicon solar panels because of this. The biggest advantage of this thing is that it is cheap. Although the efficiency is lower than that of monocrystalline silicon, it is still okay. The mainstream efficiency of 13~16% is not even in the atmosphere. The ____ does not work. At least the requirement that Gao Zhendong gets now is that the efficiency is not less than 10%, and he should try to achieve 12%.
Otherwise, Gao Zhendong would have laid an ambush a long time ago. What he said at the beginning was the 15% efficiency of monocrystalline silicon. Even if there are some problems in the current technical environment, this goal is still relatively easy. Because he directly copied the version answer.
Watching Tang Shaohui and Liang Fafa leave together, Gao Zhendong also returned to his office. The book on the synthesis of organic matter that Mr. Xiang gave him had already been delivered through the confidential channel, and he was busy working on it.
Tang Shaohui was indeed the general recommended by Yu Yuncheng. Five days later, he already had a certain understanding of solar cells and took the initiative to find Gao Zhendong.
"General Manager Gao, after learning about the solar cell-related technology you provided, I have an idea that I would like to report to you." When he said this, Tang Shaohui was somewhat uneasy. Mr. Gao Won’t the union think I’m nosy?
It’s not that Gao Zhendong has anything that puts him under psychological pressure, but that this status relationship is a bit stressful for everyone, especially when his ideas are somewhat different from Gao Zhendong’s original arrangement. different.
Gao Zhendong is very happy that he can have his own ideas so soon. What a good thing!
"Say it, say it boldly." He could see Tang Shaohui's mentality to some extent. There was nothing he could do about it. It was human nature. The only way to reduce the psychological pressure of the other party was through a warm and gentle attitude like a spring breeze.
“Okay, Mr. Gao. From the basic principles you gave me, I can see that there is actually no essential difference between polycrystalline silicon solar panels and monocrystalline silicon solar panels in most aspects, right?”
Gao Zhendong nodded: "Yes, the biggest difference between the two is that In terms of basic materials, there will be some differences in processing technology in other aspects, but there are no core differences.”
“I’m wondering if we can also develop polycrystalline silicon at the same time. ?" With Gao Zhendong's affirmation, Tang Shaohui became bolder and his expression became much smoother.
"Oh? Tell me specifically what you think." Gao Zhendong was very interested.
"Although I don't know much about solar cells, I know the difference between polycrystalline silicon and monocrystalline silicon. The biggest difference between the two is the price. Monocrystalline silicon is much more expensive than polycrystalline silicon."
< br>As the backbone of Institute 1761, Tang Shaohui still knows a lot about silicon crystals.
These days are not the same as in the next few decades. The power consumption alone can widen the price gap between the two. Monocrystalline silicon is the result of further processing of polycrystalline silicon. That's it. , polysilicon has a great cost advantage.
Hey! yes! I have ignored this myself. I only thought about space batteries, and for a while I ignored the use of solar cells. It is far from being a space battery. I even said that its greatest use is to use it on the ground. And this For this purpose, high-end products such as high-efficiency monocrystalline silicon are not always needed. I am still spoiled by the photovoltaic industry decades later. I am dazzled by the extremely cheap monocrystalline silicon that is flying all over the Internet.
"Well, that makes sense, let's continue." Gao Zhendong simply let him finish speaking, so that the other party would have a stronger sense of accomplishment and satisfaction.
“Hey, okay. So I was thinking, since the basis of the two is almost the same, can we do polycrystalline silicon while doing monocrystalline silicon? There are technical differences between the two. branches, but the core parts are similar. This increase in research costs should not be particularly large, and we can do it. Get two products with high and low quality.”
Tang Shaohui didn’t know that monocrystalline silicon solar cells are used in space projects, but he knew very well that at this stage, this kind of thing is definitely not as popular as polycrystalline silicon. It's easy, so the plan of matching high and low naturally appeared in his mind.
"Well, your suggestion is very good. In this way, you write a supplementary adjustment plan and I sign it." It seems that the things I have been doing recently are relatively high-level, and I have forgotten about being down-to-earth. Fortunately, there is Comrade reminds.
Cost will affect promotion. This is absolutely true. It is indeed very important to have polysilicon as a low-end supplement.
That's a good reminder. Then let's fight the rabbit and change the plan. You can do it for me. When it comes to laziness, I, Gao, am the best.
Tang Shaohui was stunned for a moment. Chief Engineer Gao made such a quick decision.
Also, why did this happen to me? It's not that he doesn't want to do it, it's that he wants to do it too much. Everyone wants to do it. Under normal circumstances, the person who makes the plan may not be the leader, but he must play a very important role.
Because it was important, he never expected that this matter would fall on him. Chief Engineer Gao was too open-minded.
Just when he thought of this, Gao Zhendong's words made him ecstatic.
6◇9◇Book◇Bar
"Well, just don't make adjustments and supplements, just open a new topic, polycrystalline silicon solar panels. In the topic plan, pay attention to the research and development of monocrystalline silicon solar cells. An explanation of resource sharing. "
Gao Zhendong simply sent people to the bottom, sent Buddha to the west, and started a new topic.
For Tang Shaohui, Gao Zhendong’s words are undoubtedly the sound of nature, the subject*2, and it is also a groundbreaking subject.
He can't be a leader. Apart from the suggestions just now, he can't provide any skills. He can only follow the path provided by Chief Engineer Gao.
But, but, as a person who must be ranked in the top three, there is no need to say more about what one more subject means.
As for not being ranked in the top three, there is no need to worry about it at Chief Engineer Gao. Lao Yu is a role model in the front, and he will definitely do things well.
"Ah...Okay, Mr. Gao, I'll do it right away." Tang Shaohui ran away without saying a word.
——
Even though the Spring Festival has just passed, the National Defense Work Committee is still very busy. They are responsible for the research, development and production of equipment nationwide. It can be said that they are never idle. time.
At this time, the leaders of the National Defense Work Committee are listening to the progress reports of various major projects. For the ministries and commissions that oversee related work nationwide, it is very important to control the progress.
“…The progress of modifying the Z-5 attack aircraft is very smooth. At present, the work of replacing the original engine with the latest LYP-6 engine is progressing smoothly, slightly ahead of schedule. The flight performance and load of the aircraft have been improved. Great improvements have been made. By the way, the modification work of Be-6 is also going on smoothly in the same unit..."
National Defense Work Committee The leader was very satisfied with this: "Well, with this thing, coupled with the appropriate command system and communication equipment, our army big brother is no longer alone and can solve the problem all by himself. The modification of the B-6 is very important for Our control range at sea is very important. Good job on these two things! By the way, how about the matching ammunition?”
"In terms of ammunition for attack aircraft, there are mainly several large pieces. In addition to traditional high-resistance bombs and airborne rocket nests, new ammunition is mainly concentrated in three directions: solid light anti-ship missiles, long-range glide dispensers, and laser-guided bombs. , among which the long-range glide dispenser has passed preliminary testing and has very good adaptability to traditional sub-type ammunition. It is now being loaded with the latest anti-armor ammunition. Test."
As for the latest anti-armor ammunition, the leader knows that the terminally sensitive ammunition has great expectations for its ultra-high destruction efficiency and strike effect: "Well, if these two Once the two things are combined, as long as the reconnaissance method is a little better, it can cause a devastating blow to the enemy's ground troops."
(End of this chapter)