The research progress of white light LED was originally carried out according to the plan and the plan has not exceeded the schedule. Unexpectedly, it actually broke through in the past two days. Perhaps it had accumulated, and it was natural to make a breakthrough.

The traditional PN structure was successfully replaced by a double heterostructure. The measure of doping indium gallium nitride in gallium nitride has achieved a periodic quantum well structure, lowered the refractive index of the material, and greatly increased the brightness. The brightness is now a hundred times that of the original... However, it is still blue light now.

This means that as long as the resin coating problem is solved, this white LED light can enter the product design stage, and a brand new product will be shocked.

After seeing the achievements that have been achieved, Long Jianhua smiled and said to the four of them, "It's very good. It has been nearly a year in advance to reach this level. This brightness, as long as we convert blue light into white light, we can succeed."

"We will not publish papers at this progress. We will talk about it when we complete the design of the white LED lamp production line. However, the patents to be applied for still need to be applied for, and we must be thorough and complete the application for protection patents, so we cannot give others the opportunity to take advantage of it."

"Tonight, we'll have a drink and reward ourselves for our great advancement. However, we'll discuss coatings in the afternoon."

Zheng Yichun and Qi Hao are studying coatings. They have made twelve coatings, and the effect of converting blue light into white light is still not good.

After listening to their introduction, Long Jianhua said, "Since the best effect of adding yellow phosphorus, let's specialize in this one and do it to the extreme."

When formulating the plan, he proposed several types, one of which was yellow phosphorus; after checking the information, they also proposed several types. At that time, in order to find a more suitable one, he accepted their views.

The reason for doing this is that there is enough time, and the other is that we hope to break through the "previous" technology and find cheaper and better results.

Judging from the current results, scientific research is the same, and the attitude of scientific workers is very rigorous; among all these plans, yellow phosphorus is more suitable.

Zheng Yichun nodded a little depressedly, "We are really thinking too much. If we don't continue the last three after the first nine tests are completed, but instead focus on yellow phosphorus coating, we may not drag our backs."

What he cares about is delaying the progress and feels guilty about not being able to complete it in advance with another group.

Long Jianhua shook his head, "What we need to do is to find the best way, with the lowest cost and the highest brightness. If there is a conflict between the two... find out both and finally weigh the trade-offs."

"If you do scientific research, you cannot have such a comparative attitude. Their group completed ahead of time, which is due to their own accumulation, but also includes luck. We all know that scientific research also includes luck. This cannot be compared, and we cannot be envied."

During research and development, there may be a conflict between the two, which will affect the subsequent production cost and product performance, which will affect consumers' choices. How to adopt it in the end also requires market analysis and will be determined by the market.

Zheng Yichun pondered for a while and said, "Yes. I was a little anxious when I saw their success. It was the same project, and I felt very guilty that I asked them to wait for us."

"I'll tell me my point of view. Sodium compounds can be discarded, but the effect is too poor. If you use too much, you will lose brightness; if you use less, you will not neutralize blue light. Next, our focus should be on yellow phosphorus and phosphides."

Qi Hao continued, "The effect of phosphides is worse than that of yellow phosphorus. I think we can make yellow phosphorus first. When the effect is achieved, we will reduce the cost and then make other phosphides."

Long Jianhua was happy to hear this kind of discussion between them. So far, he has determined that the coating is the best way to add yellow phosphorus. The two of them are also approaching in that direction when excluding them.

He nodded, "Then let's make yellow phosphorus first. It's just a factor, it's a relatively simple matter, it's a matter of quantity. If there are several factors, it's a problem, and you have to use the orthogonal method to optimize it."

For dinner, the five of them were in the private room of the cafeteria. The chef made him a steamed braised rice, fried a dried loach, and a seafood melee. The other three dishes were the big pot dishes in the cafeteria.

Shi Liqiu poured a glass of wine for everyone and sat down, laughing, "Mr. Long, are these three dishes your specialty? We have eaten before, but we have eaten very little."

He laughed and said, "I taught them all these three dishes."

Yan Zuoqiu asked in surprise, "Mr. Long, you can still cook."

I felt something was wrong immediately and laughed, "I really can't think of how to cook when you look like this."

It seemed that it was still wrong, and she smiled awkwardly, "I didn't mean that. I just felt that you couldn't cook."

Long Jianhua smiled, "I've been in the team, why don't I? When the supplies are a little richer, I think about making all kinds of dishes and making various tricks. Now that the supplies are richer, I don't have much pursuit of these things, but when I drink, I still enjoy this kind of dishes."

Zheng Yichun laughed and said, "When we ate these things before, we also felt delicious, but we didn't expect that it was invented by Mr. Long. It seems that I will also study dishes in the future. After all, this is also a kind of life. Studying natural sciences at work and studying cooking sciences at home is also a good choice for me who doesn't like communication."

Qi Hao fully agreed, "Indeed, we can study it in the future. Not to mention anything else, cooking for the family is also a kind of enjoyment and can bring harmony to the family atmosphere."

While eating and chatting, Shi Liqiu suddenly changed the topic, "Mr. Long, I think gallium nitride has a great purpose and I want to continue researching it in the future."

Long Jianhua smiled and said, "Yes. You can establish projects yourself or take orders from other project teams; however, before doing these, you need to figure out the characteristics of gallium nitride. This is basic science and requires patience."

He is still very interested in gallium nitride. Its purpose is not very wide, but its purpose is very large. It is an important raw material for new semiconductor materials for microelectronic devices and optoelectronic devices. Therefore, after he proposed it, he immediately encouraged it.

Shi Liqiu smiled and asked, "Mr. Long, if ours becomes a product, there should be a commission? If there is this money, plus my current annual salary, I have already had a high income. It is very good to do these basic research. I have been studying gallium nitride for so long, and I really can't bear to let go."

Qi Hao immediately agreed, "So too. With enough money and no pressure on life, I can do something I want to do. In the future, I will continue to study gallium nitride."

Seeing them say this, Zheng Yichun said, "Mr. Long, I hope to go to the lighting company to do production management."

Long Jianhua looked at the three of them and turned his head to ask Yan Zuoqiu, "Where are you?"

Yan Zuoqiu smiled, "I want to continue to improve the white LED for a period of time. Blue light may have achieved the ultimate goal, but white light should still have some space. If there is nothing perfect, I will also choose gallium nitride as my future research direction."

Long Jianhua picked up the cup and clinked them, "Respect your choice. After the white LED is launched on the market, the institute will not be revoked because it will continue to study. Those who study gallium nitride can stay here or join the Materials Institute..."
Chapter completed!