Deep ultraviolet LEDs will change the application of human sterilization technology, bringing a new clean environment.
The picture shows the execution site of the deep ultraviolet light sterilization operation.
Deep ultraviolet light, especially deep ultraviolet light with a wavelength of 265 nanometers (nm), is one of the important physical sterilization methods because it easily destroys the genetic components of bacterial DNA, and it is an important physical sterilization method. Led light source will help the popularity of related applications.
In the past, deep ultraviolet light was widely used in laboratories, high-end medical facilities, and specific factories, but it was difficult to popularize. This is because the deep ultraviolet light of the mercury lamp technology system requires a starting voltage of 100V or more for the size of the lamp. It needs 10~ before starting. 30 minutes warm-up, service life of about 3,000 ~ 5,000 hours, power consumption, slow effect and short service life, not suitable for use in home appliances.
However, the deep ultraviolet LEDs are different. Each deep ultraviolet LED chip is less than 1 cm in size, the starting voltage is 5~7V, the warm-up time is 0 seconds, and the service life is over 10,000 hours, which is quite easy to use.
At present, the most effective use of deep ultraviolet light is to replace the chemical water purification technology such as chlorine or ozone. In the past, mercury used in deep ultraviolet mercury lamps is a heavy toxic substance, so it cannot be used in public water filtration applications; The light LED light source is free of silver. As long as the output power problem is solved and the deep ultraviolet light with sufficient intensity is provided, it can be applied to the use of drinking water cleaning.
In the application of deep ultraviolet light, the Japanese factory is currently headed by three factories including Nikkiso, the chemical giant Asahi Kasei, and the chemical giant Tokuyama.
Nikkiso is in 2006. It cooperated with Akasaki and Amano, who won the Nobel Prize in Physics in 2014, and used aluminum gallium nitride (AlGaN) light source with aluminum nitride (AlN) buffer layer to make output power first. 30mW products, in January 2016 will be launched with a sample output of 50mW, scheduled for mass production in the spring, as long as the water flows at a rate of 2 to 10 liters per minute through the effective range of 50mW deep ultraviolet light, there will be 99.9% sterilization effect .
Asahi Kasei is a high-purity aluminum nitride substrate that is scheduled to be released in April 2016. The output is only 20mW, but the unit price of 1mW is reduced from $2 to $3 for other manufacturers to $0.5 to $1. And it may be further reduced to $ 0.25 to quickly open the appliance market application at a low price.
Aluminum nitride has an obvious disadvantage, that is, the deep ultraviolet light has a high deflection coefficient, and most of the light cannot be emitted. Therefore, Deshan starts from changing the molecular structure of the substrate, so that the light emission amount is twice that of the current product, and the research and development output power reaches 90 mW. Deep ultraviolet LEDs, winning at high power, are scheduled to reach mass production in 2016. Due to the deep ultraviolet light with shorter wavelength than visible light, more precise processes are required to produce effective deep ultraviolet LEDs. When the market is facing competition between Chinese and Korean factories, the Japanese factory has turned to the field of deep ultraviolet LEDs with superior technology, which is an effective transformation path.
With the Japanese high-power deep ultraviolet LED will be launched in mass production in 2016, the follow-up market size deserves careful observation.
Extended reading:
Japanese machine installation and deep ultraviolet LED development
Nikkiso was established in 1953. At that time, the name of the company was special, and the high-performance pump was the main business. In 1968, it was changed to the current name, with a capital of 6.5 billion yen (about US$53 million). 2014/4~2015/3) Revenue was 129.3 billion yen and business profit was 6.12 billion yen.
Generally speaking, the introduction of the Japanese machine will mention that the factory is a large factory for industrial and aviation use. However, after the original artificial heart was made in Japan in 1960, it is an important medical equipment manufacturer, specializing in pumping and The filtration of related technologies in the heart, kidney, hemodialysis and other fields, so the plant has long noted that deep ultraviolet sterilization technology is regarded as an important part of filtration technology.
In 2014, Akasaki, who won the Nobel Prize in Physics for his invention of blue LED, has been leading students, including Amano, who has won the Nobel Prize in Physics, since 1990, to study UV LED related technology; In 2006, Meijo University, which they served, intended to commercialize UV ​​LEDs and set up a new venture, UV Cradtory.
Chuangguang Science has just been established, and Nikkiso has become an important funder of the company. In 2012, it will increase its shareholding to 70%, making Chuangguang Science a subsidiary of the deep-UV LED business of Nikkiso. Since Chuangguang Science is a core team of research and development by Chisaki and Amano, the team has been in close contact with the two professors. Therefore, it is generally regarded as the source of the deep-UV LED business in Japan. It is the guidance of Akasaki and Amano. .
Japanese machine
Nikkiso was registered in 1950. It was actually a machinery manufacturing plant established in Tokyo, Japan, at the end of 1953. It has a capital of 6.5 billion yen and a revenue of 1293 in fiscal year 2014 (2014/4~2015/3). Billion yen, net profit of 5.1 billion yen. The company has 1563 employees and 6389 employees. The main business is special pumps and precision machinery and equipment, especially equipment using special materials such as carbon fiber.
There are three main business divisions in Japan: industrial, aerospace, and medical. The company was famous for launching the world's first artificial heart in 1960. It is the most famous business with various types of artificial organs and related special materials. At present, the company's artificial kidneys account for 70% of the domestic market in Japan. Materials and precision machining technologies are basically derived from the medical industry and related needs.
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