Chapter 119: The lifting failed, and there was a serious problem with the equipment
“Open the talent market.”
[List of talents available for recruitment today]:
1. Zhang He, purple quality , 985 degree, scientific research talent, focusing on ArF photoresist. Funds required for recruitment: 7,000 yuan.
2. The white color is folded.
3. The white color is folded.
4. Wei Bingqing, blue quality, primary school education, strength talent, specializes in straight boxing, recruitment funds required: 5,000 yuan.
5. Cai Keli, blue quality, college degree, management talent, 4 years of management experience, recruitment funds required: 5,000 yuan.
It takes about eight hours to pull a 14-inch silicon rod. Chen Xing did not wait, but used the talent market to pass the time.
Obviously.
Good luck today!
A purple-quality photoresist talent has emerged without spending any money to refresh it.
"ArF photoresist..."
Chen Xing murmured to himself.
This ArF photoresist should be a certain type of photoresist. It seems to be different from semiconductor silicon wafers. Its subdivision types may be much more complicated than semiconductor silicon wafers.
Although the equipment has not yet been obtained, photoresist talents cannot be dispensed with.
“Recruit Zhang He.”
[Ding! 】
【Recruitment successful! 】
【5,000 yuan has been deducted from the account of Longxing Technology Company. Zhang He is about to arrive at Tengfei Industrial Park. Please pay attention to the reception! 】
"Refresh the talent market."
[Ding! 】
【Deducting 1W of funds, the talent market list has been refreshed! 】
When the system prompt sounded, the blue system panel was refreshed. There were no miracles, not even purple quality talents. Five blue quality talents occupied the market position.
Chen Xing has no worries in his heart. The side effects of the rankings are too great. It makes the refresh probability of blue quality talents reach more than 50%, and it is reasonable to occupy the market.
Now he has two options, either upgrade the talent market to level five and see if he can reduce the probability of blue talent refreshing, or push a million refresh fees and use expensive refresh fees in exchange for high quality Talent.
The former costs 200 million, and the latter...
Chen Xing recruited like crazy during this period to run the Longxing Silicon Factory, but it only cost 150 million...
< br>It’s not that the market can’t afford it, but it’s more cost-effective to refresh at a high price!
"Continue refreshing."
"Continue to refresh."
"Continue to refresh."
Continuous refreshing made the refresh cost exceed one million again, and the system panel and prompt sound appeared again.
【Ding! 】
【Warm reminder, the funds required for this refresh have exceeded one million, and the probability of talents with purple quality and above has increased. Do you want to continue? 】
“Following…”
Before Chen Xing finished speaking, a deep cracking sound suddenly sounded.
“Boom——”
“What happened???”
In an instant.
The workplace was in chaos.
"The seed crystal is broken... broken?"
"Why is the pulling seed crystal broken? There is not much silicon crystal attached, and the pulling speed is not slow!"< br>
"Gong Yang made a mistake in his calculations?"
"What should we do now? Should the quartz crucible be reheated? The single crystal silicon that has been lifted has sunk to the bottom of the furnace."
< br>"Did...failed?"
The buzz around him made Chen Xing quickly close the system panel.
He looked at the lost Yang Lie beside him and asked quickly: "Gong Yang, the first time the monocrystalline silicon rod pulling failed?"
"President...I..."
Yang Lie looked ugly and hesitated to speak.
His old face was completely lost. The previous purification process went smoothly. Wei Hua, Han Ming and Zhai Yong each showed their talents to purify the silica to 11N polysilicon and complete the doping. However, when it was his turn, he failed to pull the silicon rod.
Seeing that Yang Lie was a little self-blaming and looked decadent, Chen Xing quickly comforted him: "Don't take it too seriously. We are starting from scratch. It is normal to have setbacks. Let us sum up our experience and try again. We all believe in you. Yes.”
“That’s right!”
Han Ming agreed and continued: “The president is right. Pulling is inherently difficult. The thicker the monocrystalline silicon rod, the The difficulty of lifting is higher. If it doesn’t work once, we will do it twice. If it doesn’t work twice, we will do it a third time!”
“Learn from experience and try again.”
“Failure is success after all. Damn it, let’s recalculate and try again!”
Wei Hua and Zhai Yong also spoke to comfort.
The talented people in the work area who were originally restless also cheered up again with the encouragement of each other.
It’s just one failure, what are you afraid of?
They started from scratch and were crossing the river by feeling the stones.
"Wait, I forgot."
Chen Xing suddenly thought of something, and quickly asked Yang Lie to wait for a while, then he ran to the parking lot of the industrial park and took out the Shanghai silicon from the storage box of the car. Group experience notebook.
When he returned to the factory, he handed his notebook to Yang Lie and said: "This is a summary of Shanghai Silicon Group's failed experience in producing 12-inch silicon wafers in recent years. See if it is useful."
" I..."
Yang Lie took the notebook, his eyes flashing with gratitude.
He was not good at words. After being encouraged and motivated, he nodded heavily and said: "Thank you, CEO, for your trust. Thank you for your trust. I will recalculate and try again."
"Go ahead. .”
Chen Xing didn’t mean to blame.
Semiconductor silicon wafer production itself is difficult. If it can be solved so easily, then there is no need to rely 100% on imports. This is a process that domestic production must go through.
Zhai Yong also stood up at this time, raised his voice several times and said: "Reheat the quartz crucible to 1450 degrees Celsius and wait for Engineer Yang to calculate the next pulling speed."
"The quartz crucible is reheated and has been set to maintain at 1450 degrees Celsius!"
"The temperature is rising!"
The equipment operator repeated, confirming that the value was not wrong.
And on the other side.
In an office in the factory.
Yang Lie came to the desk and sat down, looking through the failure cases of Shanghai Silicon Group, and began to summarize the experience of this failure.
If you want to pull a large-sized silicon rod, you need to calculate the pulling speed, silicon solution, mother crystal and radiant heat.
Let’s talk about the pulling speed first and why the single crystal silicon rod can be pulled out.
This is because after the mother crystal, that is, the seed crystal is put into the silicon solution, the silicon crystals in the silicon solution will adhere to the seed crystal.
When they are attached, pull them out slowly because the temperature of the liquid surface drops and it changes from liquid to solid.
This phenomenon is like in an extremely cold area, where the temperature inside the house is 23 degrees Celsius, while the temperature outside is more than 20 degrees below zero. When you spray water outside the house with a water gun, the sprayed water column will instantly condense into ice when it comes into contact with the cold air outside.
The same principle applies to the pulling method of single crystal silicon rods.
As for the size you want to stretch, it depends on the lifting speed and rotation speed.
Rotating allows the surrounding silicon crystals to adhere, and pulling up allows the attached silicon crystals to cool down. During this period, the pulling speed must be adjusted several times, otherwise it will become more bloated.
But Yang Lie calculated carefully and found that the pulling speed needed to be adjusted after two hours. It was less than an hour. Why did the mother crystal break and there were too many silicon crystals attached?
While summing up his experience, he kept looking at the failure summary of Shanghai Silicon Group. After several calculations, the result was still that the pulling speed was 3 mm per minute.
"Could it be that the pulling speed is too slow? Try adjusting it to 4 mm?"
Yang Lie continued to calculate.
He thought that the pulling speed was too slow, which resulted in too much single crystal silicon attached to the seed crystal, causing the mother crystal to break.
As the pulling speed increases, the adhered single crystal silicon will decrease.
Think of this.
He quickly returned to the working area. When Chen Xing saw Yang Lie coming back so quickly, he immediately asked: "Have you found a solution?"
"I'm not sure if it's a problem with the pulling speed, and further experiments are needed. ."
Yang Lie quickly replied.
He is confused now and somewhat doubts his own skills.
After several calculations, he found that the pulling speed was 3 millimeters per minute, but the seed crystal broke again at 3 millimeters.
Currently he guesses three situations.
1. The pulling speed is too slow, resulting in too much crystal attachment, exceeding the original 14 inches, and may reach more than 20 inches, and the seed crystal will not be able to withstand the pressure and break off.
2. The purity of the seed crystal is not enough. Impurities damage the single crystal silicon surface. When the silicon crystal adheres, gaps appear.
3. Equipment problems.
In the latter two cases, Yang Lie believed in the silica refining technology of Wei Hua and Han Ming, and also believed that the equipment brought by Chen Xing was fine, so he did not doubt it, but thought that he might have made a miscalculation the first time.
But six hours later, the quartz crucible furnace did lift a single crystal silicon rod, but it was only 10 inches in diameter. If polishing was included, only an 8-inch semiconductor silicon wafer could be made.
“Why is this happening?”
Yang Lie was confused. He directed the next pull of the single crystal silicon rod and adjusted the speed back to 3 mm per minute.
However...
It was less than an hour again.
"Bang——"
The connection between the seed crystals broke again, and the single crystal silicon that was pulled out hit the silicon solution heavily, making a muffled sound.
Smelting.
Lift.
Broken.
Yang Lie tried several times, but Chen Xing did not leave the silicon factory. Instead, he ate and lived with the silicon wafer engineers.
After several parameter adjustments and three days passed, Yang Lie looked sloppy and was still calculating what was wrong. This honest man did not think about the machine and purity issues at all.
Talent Purification Han Ming couldn't stand it, and tried to help find the problem.
When he took the monocrystalline silicon fragments for inspection, his pupils suddenly shrank and he immediately shouted:
"There is a problem! There is a problem with the purification! The purity of the monocrystalline silicon is only 99.9999%. 6N, this is industrial grade, not semiconductor grade!”
The sound spread throughout the factory, making Wei Hua, who was in charge of purification, stunned.
6N?
How is that possible!
They had already tested it and it was clearly 11N purity!
Polycrystalline silicon is 11N, how can monocrystalline silicon be 6N? There is only one melting and pulling process, unless there is an error in doping?
Zhai Yong, who is in charge of doping, is even more confused. He did not dope with impurities. What he did doped was phosphorus, which increases the conductivity of the silicon wafer!
Chen Xing also heard Han Ming's shouting and immediately called him out: "Han Gong, what's going on? Didn't it say that monocrystalline silicon will be obtained by melting and pulling 11N polysilicon?"
“I don’t know, but I checked with the testing equipment and found that the impurities in the monocrystalline silicon, such as iron and aluminum, exceeded the standard and did not meet the 11N standard at all!”
Han Ming made a long story short! .
Hearing this, Chen Xing fell into silence. He vaguely felt that the matter was not simple, and there was probably a problem with the equipment.
As a man who cheats, he knows very well the abilities of golden-quality talents, and it is impossible for him to make mistakes again and again.
He believes in talent.
Don’t trust the equipment.
After a brief hesitation, he called the purple quality talent who came to control the equipment and ordered: "Empty the silicon solution of the quartz pulling furnace immediately and comprehensively inspect the production equipment."
"Yes! I will do it right away."
The other side.
As soon as he walked to the workshop, Yang Lie was stunned for a few seconds, and then he quickly came to Chen Xing and asked:
"President, what happened?"
Before Chen Xing could speak, Han Ming immediately explained the situation: "The purity of polysilicon has dropped, and there is probably something wrong with the equipment."
"Is it possible that it is doped?"
Yang Lie As soon as he finished speaking, an extremely certain voice came from behind him: "This is phosphorus, it can't be wrong."
Zhai Yong approached with the adulterant and asked everyone to observe it carefully.
“It is indeed phosphorus.”
"Then now..."
If Yang Lie didn't make a mistake and Zhai Yong didn't make a mistake, then it can only be a problem with the equipment.
Chen Xing's eyes were cold, now it can only be a problem with the equipment.
However, it is impossible for the Shanghai Silicon Group to interfere. Yu Yuehui’s background has been found out long ago, and he is a well-established entrepreneur.
And he said at the beginning that this batch of equipment had just been ordered. Is it possible that the equipment supplier had done something?
Think of this.
Chen Xing called Yu Yuehui.
……
The other side.
Magic City.
Shanghai Silicon Group Headquarters.
Yu Yuehui was still negotiating business, but when he saw that it was Chen Xing calling, he immediately stood up and said, "Excuse me, everyone, I'm going to take a call."
"It's okay, Mr. Yu first Take it.”
“Yes, let’s have some tea first”
Several business partners responded quickly, full of polite words.
Yu Yuehui walked out of the office, came to one side of the corridor area, answered the phone and said, "Mr. Chen? Are you calling to share something happy?"
Chen Xing: "Yu I always want to ask, is this batch of equipment coming from the right place?"
Yu Yuehui frowned, heard the clue, and quickly lowered his voice: "Is there something wrong with that batch of equipment?"
"Maybe..."
Chen Xing told the story exactly.
Yu Yuehui suddenly fell into deep thought. He was making semiconductor silicon wafers, so he naturally understood that the purity of the purified polysilicon could not be reduced, and the single-crystal silicon quartz pulling furnace might have been tampered with.
After hesitating, he chose to confess: "The origin of this batch of equipment is indeed a bit tortuous. I had people search for parts to assemble it. Equipment from regular channels is supervised by the manufacturer's engineers. How about I send a few An engineer will come over and help you figure out what the problem is."
"That's right."
This sentence confirmed Chen Xing's guess.
The equipment comes from an improper source and has not been tested by anyone involved. The equipment parameters and parts may be different from the original version.
But!
It’s not Yu Yuehui’s fault!
If it were not for Western restrictions and production equipment was basically unavailable, who would buy equipment parts and assemble them by themselves?
And it may not be bad to assemble it yourself. There may be a problem with a certain part.
Yu Yuehui took a deep breath and asked again: "What should you do now? Is there a shortage of manpower?"
"I can still handle it. If it is confirmed that it is an equipment problem, I will call you later."
"Okay, you guys check first."
"Then hang up first."
< br>When the phone hung up, Yu Yuehui thought of a possibility and immediately called the engineer in his own production workshop to ask if the purity of monocrystalline silicon had decreased.
The engineer's reply was simple.
No!
While Yu Yuehui breathed a sigh of relief, his cheeks felt a little hot.
Selling other people's equipment...
As a result, a batch of problematic equipment was sold...
If word of this spreads, Yu Yuehui can make Gao Yongming, Liu Wei, Ren Guofei, etc. Semiconductor industry bosses laugh all their lives.
Thank you all readers for your monthly votes and recommendation votes, and thank you for reading every day. Thank you all.
Finally, I recommend the book "Technology Power: The National Treasure Is Myself". It is also a science and technology article. Interested big guys can read it. He and I have absolutely no py transactions (pants).
(End of this chapter)