Deep UV LED market in the next 3-4 years will break 5 billion 200 million yuan

Only need to illuminate the invisible light, you can easily sterilization era is coming. In addition to daily life, this technology also helps to improve health conditions in poor areas. Japanese companies are relying on technical strength, leading the world to save the future light".

Life is a battle with the mold. Air conditioning, humidifier, air purifier, bathroom, kitchen - cleaning as long as a little slack, these places will be moldy. If you do not put a small mold in the eyes, will certainly suffer. Not only is the smell unpleasant, mold in the air conditioning and the humidifier humidifier, once spread to the room, there may be caused by mycoplasma pneumonia and other diseases.

Can man win the battle against his old enemy, the mold? Now, a cutting-edge technology that can be called a new generation of weapons is about to enter the practical stage.

Deep ultraviolet LED (light-emitting diode) can release a bactericidal effect, and the naked eye can not see the light. This bactericidal effect of light, called deep uv.

Deep UV refers to the shorter wavelength of uv. In the field of LED, is now the main development of the release of "UV-C", that is, 100 ~ 280nm (nano, nano for the light of 1 billion points) type. The sun also contains deep ultraviolet light, but by the barrier of the ozone layer, basically can not reach the ground.

The power of deep ultraviolet light has long been confirmed. Deep ultraviolet rays can directly act on the basis of life -- DNA, fundamentally cut off bacteria. Project director Kuse Naohiro Asahi UVC project said: "the research shows that the wavelength of 260nm is especially vulnerable to deep ultraviolet absorption of DNA. The effect of eliminating DNA genetic information". After losing genetic information, the bacteria can no longer continue to reproduce.

In the past, mercury lamps were known as the deep UV generating equipment. It is mainly used in commercial sterilization and inspection applications, such as medical devices, factories and research institutions, food and so on. But in other areas, there are difficulties in popularity.

The first is performance constraints. Mercury lamp working voltage of 100V or more, the size of a few cm to a few m. Power consumption is large enough to be fully preheated before the light, it takes 10 to 30 minutes. And life is only 3000 ~ 5000 hours. This size, power consumption and durability, can not be used in home appliances and automobiles.

The most important problem is that Mercury is toxic to the human body. In 2013 92, Japan and other countries signed the "Minamata Convention" on mercury. Strengthen the limits of mercury is expanding the practice of the world.

The deep UV LED can be easily installed on the machine, but also has good security. The working voltage is about 5 ~ 7V, the size is only a few mm, the preheating time is about 0 seconds. Life of up to 10 thousand hours or more, and the impact of durability, no mercury.

Deep UV LED breaks the limit of mercury lamp. If this new technology is popular, in all aspects of life, sterilization routine will become a reality.

Not only air conditioners, refrigerators, water dispensers, humidifiers and other appliances, portable terminals, residential equipment and cars and other places can also be installed. Because of low energy consumption in the world, the lack of clean water in poor areas of the world, should also play a role in improving the living environment. Use will achieve expansion. Insiders believe that the relevant market size of deep UV LED in the next 3 to 4 years, will exceed the Japanese yen (about RMB 5 billion 210 million yuan).

There are still weaknesses in this technology: the luminous efficiency is worse than mercury vapor, mass production technology is not mature. However, techniques to compensate for these weaknesses are being developed.

To capture the growth of the market, in order to improve the luminous efficiency, the establishment of mass production technology, the realization of cost as the goal, the world set off a white hot technology development competition. The vanguard is 3 Japanese companies: Nikkiso, Asahi and mt..

Deep UV LED based on semiconductor technology. The focus of competition is the ability to produce high performance semiconductor with high yield.

Nobel prize technology is the source

In 2014, he and Amano Hiroinno developed the blue LED and won the Nobel prize in physics. Large scale industrial pump enterprises from 2006 onwards, began to carry out practical research under the guidance of two people. In 10 years later in March 2015, to achieve the production of deep UV LED supply.

With the wisdom of the world's semiconductor authority, the establishment of mass production technology why so long? This is because the blue, red and so on has entered the popular stage of a variety of different materials used in deep UV LED LED.

In general, LED is made of a thin film of luminescent material superimposed on a sapphire substrate.

When making blue LED, the crystal layer of gallium nitride is superimposed on sapphire substrate. The production of high quality crystal layer is the key to achieve mass production and stable performance, but it is not easy to crystallize on sapphire.

To this end, people come up with the first set of gallium nitride on the sapphire buffer layer, and then superimposed on the gallium nitride layer. With the success of the development of buffer layer technology, and won the Nobel prize.

Day machine also began to develop a sapphire substrate on the buffer layer of deep UV LED production technology. However, the luminescent material of deep UV LED is different from that of blue LED, which is made of gallium nitride gallium nitride and gallium nitride is easy to absorb ultraviolet light.

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