据《2019深紫外线LED应用市场报告》显示，2018年全球UV LED市场规模达2.99亿美金，预计到2023年市场规模将达9.91亿美金，2018-2023年复合增长率达到27%。UV LED广阔的发展前景逐渐吸引厂家的进入。
If you want to say that the hottest products in the first half of the lighting market, ultraviolet sterilization lamps must be among the best. Under the impact of the new crown epidemic and people's pursuit of quality of life, the requirements for health and sanitation conditions have also increased, and also Let ultraviolet germicidal lamp also ushered in its new wave of purchase.
Ultraviolet disinfection is an ancient and effective method. Its principle is to use high-energy ultraviolet light to break the DNA double helix, so as to achieve the inactivation of bacteria and viruses.
However, it is not easy to achieve effective sterilization and disinfection by ultraviolet rays. It is necessary to pay attention to the wavelength, irradiation dose and time of the ultraviolet light source, that is, it must be deep ultraviolet light in the UVC band below 280nm, and must meet a certain amount of irradiation and time for different bacteria and viruses Otherwise, the effect of inactivation and sterilization cannot be achieved.
Strictly speaking, the UV LEDs on the market include long- and short-wave ultraviolet LEDs, and UVC LEDs are dedicated to short-wave, and their product characteristics are more suitable for human sterilization lamps. However, most of the industry currently assumes that the two are equivalent.
Research has shown that
UVC LED can effectively kill new coronavirus
Since this year, many forces around the world have invested in the development of methods to effectively kill new coronaviruses. In the field of UVC sterilization and disinfection, many existing manufacturers and professional research scholars have achieved initial results, such as Seoul Weishi, Ushio in Japan, well-known universities in Japan, and well-known universities in the United States.
Recently, new research has sent positive signals. According to foreign media reports, Dr. Hönle, a German UV technology developer, has conducted relevant research and found that the UV unit can kill coronavirus within seconds, with a sterilization rate of 99.99%.
The use of UVC radiation to sterilize the surrounding air and surfaces can reliably and effectively reduce the risk of new coronaviruses. Combined with various products equipped with UVC technology, the disinfection place can be extended to air sterilization, surface sterilization and other more application scenarios.
From Japan Miyazaki University and Nikkiso cooperate to jointly study the sterilization effect of UVC LED lamps.
In the study, the researchers used a UVC LED lamp to irradiate the liquid containing the new coronavirus for 30 seconds. Three days later, they found that the infectivity of the new coronavirus was reduced by more than 99.9%. The preliminary plan can be used to prevent infection in the hospital.
New materials help UV LED reduce costs and improve efficiency
On the other hand, at this stage in the field of UV sterilization and disinfection, many manufacturers and researchers have frequently reported good results, and they have achieved considerable research results.
However, due to the problems of low light efficiency and high cost, how to achieve large-scale commercialization of UV LEDs is a problem. At the same time, how to reduce costs and improve light efficiency to achieve the best ideal effect is also a problem that people in the industry are eager to solve.
The use of suitable materials is critical to improve the performance of UV LEDs.
According to foreign media reports, the Pennsylvania State University of the United States, the University of Minnesota, the University of Tokyo and the Northeastern University of Japan have jointly discovered a new type of transparent conductor material that emits UV light, or may solve the problem of low efficiency of the current UV LED technology.
The study found that the solution to the low efficiency of UV LEDs is to use a new type of transparent conductor material-strontium acid material.
Through the use of strontium niobate material, the film growth method was used to test the performance of strontium niobate film as a UV transparent conductor material. The results show that it is expected to integrate this new material into UV LEDs at low cost and achieve high-quality disinfection and sterilization .
Through the discovery of new materials, the application forms of UV LEDs will also become more diverse, and customized products will be more abundant, which can respond to various application scenarios.
In particular, public places include movie theaters, sports arenas, and other crowded places, as well as the use of public transportation such as buses, subways, and airplanes, which is very conducive to reducing and isolating the spread and spread of viral bacteria.
UV LED broad development prospects
In fact, UV LED will replace the traditional ultraviolet mercury lamp and become the mainstream development.
The Minamata Convention, which bans mercury (mercury) internationally, officially entered into force in August 2017. It clearly states 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, etc. in the field of household, industrial and other ultraviolet lamps, UV LEDs are needed to replace these ultraviolet mercury lamps, which has also accelerated the UV LED market to take off around the world.
With the continuous advancement of technology, the distance between the cost performance and luminous efficiency of UV LEDs and mercury lamps will become smaller and smaller, which will allow UV LEDs to benefit the public.
According to the "2019 Deep UV LED Application Market Report", the global UV LED market reached US$299 million in 2018, and the market size is expected to reach US$791 million by 2023, with a compound growth rate of 27% in 2018-2023. The broad development prospects of UV LED gradually attract manufacturers to enter.