About UV LED

(Last Updated On: June 16, 2020)

If we want to talk about the hottest products in the lighting market in the first half of the year 2020, the ultraviolet germicidal lamp must be one of the outstanding ones. Under the impact of novel coronavirus’s epidemic and people’s pursuit of quality of life, the requirements for health and hygiene conditions have also increased, and ultraviolet germicidal lamps have also ushered in a new round of procurement.

Ultraviolet disinfection and sterilization is an ancient and effective method, its principle is to use high-energy ultraviolet light to break the double helix chain of DNA, so as to achieve the inactivation of bacteria and viruses.

UV LED

However, it is not simple for ultraviolet to achieve effective sterilization and disinfection. Attention should be paid to the wavelength, dose and time of ultraviolet light source, that is, it must be deep ultraviolet light in UVC band below wavelength 280nm, and a certain exposure dose and time must be satisfied for different bacteria and viruses, otherwise the effect of inactivation and sterilization can not be achieved.

Strictly speaking, the UV LED on the market includes long and short wave ultraviolet LED, while UVC LED is dedicated to short wave, and its product characteristics are more suitable for human germicidal lamps. But at present, most people in the industry default that the two are the same.

Some studies have shown that. UVC LED can effectively kill novel coronavirus

Since the beginning of this year, many forces around the world have invested in the research and development of effective methods to kill novel coronavirus. In the field of UVC sterilization, many manufacturers and professional researchers have achieved preliminary results, such as Seoul Weishi, Ushio of Japan, well-known universities in Japan and well-known universities in the United States.

Recently, new research has sent a positive signal. According to media reports, German UV technology developer Dr. H ö nle found that the UV unit could kill the coronavirus in seconds, with a bactericidal rate of 99.99%.

Using UVC radiation to sterilize the surrounding air and surface can reliably and effectively reduce the risk of novel coronavirus. Combined with a variety of products equipped with UVC technology, disinfection sites can be extended to air sterilization, surface sterilization and other more application scenarios.

From Miyazaki University of Japan and Nippon Machinery Co., Ltd. jointly studied the germicidal efficacy of UVC LED lamps.

In the study, the researchers used UVC LED lights to irradiate the liquid containing novel coronavirus for 30 seconds. Three days later, they found that novel coronavirus’s infectious power decreased by more than 99.9%. The initial plan can be used to prevent hospital internal infection.

New materials help UV LED to reduce cost and improve efficiency

On the other hand, at this stage, in the field of UV sterilization and disinfection, many manufacturers and researchers have frequently sent good news, and have made a lot of research achievements.

However, due to the limitation of low light efficiency and high cost, how to commercialize, UV LED on a large scale is a difficult problem. At the same time, how to achieve the best ideal effect by reducing costs and improving light efficiency is also a problem that people in the industry are eager to solve.

The use of suitable materials is very important to improve the performance of UV LED.

According to media reports, Pennsylvania State University in the United States, University of Minnesota in the United States, University of Tokyo and Tohoku University in Japan have jointly discovered a new type of transparent conductor material that emits UV light, which may solve the problem of low efficiency of UV LED technology at present.

It is found that the solution to the low efficiency of UV LED is to use a new transparent conductor material-strontium acid material.

Strontium niobate thin films are grown by radiation method, and the properties of strontium niobate thin films as UV transparent conductor materials are tested. The results show that this new material is expected to be integrated into UV LED at low cost and achieve high quality disinfection and sterilization.

Through the discovery of new materials, the application forms of, UV LED will become more and more diverse, and customized products will be more abundant, which can cope with a variety of application scenarios.

In particular, public places, including crowded places such as cinemas and sports arenas, as well as the application of public transport such as buses, subways and airplanes, are very helpful to reduce and isolate the spread and spread of viruses and bacteria.

Broad Development Prospect of UV LED

In fact, UV LED will replace the traditional ultraviolet mercury lamp to become the mainstream development.

The Minamata Convention, which banned mercury (mercury), entered into force in August 2017, making it clear that from 2020, countries should gradually reduce the production and trade of mercury-containing products.
More than 90 countries, including Japan, China, the European Union and so on, need UV LED to replace these ultraviolet mercury lamps in the field of household, industrial and other ultraviolet lamps, which also accelerates the take-off of the UV LED market around the world.

With the continuous progress of technology, the cost performance and luminous efficiency of, UV LED and the distance between mercury lamp and mercury lamp will become smaller and smaller, which will make UV LED benefit the public.

According to the 2019 Deep Ultraviolet LED Application Market report, the global UV LED market reached US $299 million in 2018 and is expected to reach US $991 million by 2023, with a compound growth rate of 27% from 2018 to 2023.
The broad development prospect of UV LED gradually attracts manufacturers to enter.

There are many technical problems in UV LED from chip to material, but with the development of UV LED technology, the discovery of new materials and the application of more meta-fields will accelerate the large-scale commercial application of UV LED.

10 thoughts on “About UV LED”

  1. I have been checking out some of your articles and i can claim pretty clever stuff. I will make sure to bookmark your blog. Bessy Thane Rhynd

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