On December 29, at the summit forum of deep UV LED at the 2020 experts' annual meeting jointly held by experts and UV LED wind direction, Dr. Chen Jingwen of Hubei deep UV Technology Co., Ltd. shared with us the challenges and opportunities of UVC LED market from three aspects of market value, product value and technical support value, and introduced the Beidou system facing UVC development and the provision of connecting customers and UVC Led solutions.

Using big data as market compass

Dr. Chen Jingwen said that there are too many segments in the UVC market, such as household appliances, small household appliances, environmental appliances and personal care, so it is very important to give customers a choice of direction. The Beidou system developed by Shenzi technology can be used as the big data compass of the market, which can lock the data sources in the three domestic e-commerce platforms of Jingdong, Taobao and 1688, build a structured data system of commodity & gt; stores / markets, use real e-commerce data to observe the industry trends in time, and provide the latest market information support for customers and sales personnel.

Core technology iteratively mining higher fields

According to Dr. Chen Jingwen, deep UV has carried out in-depth research on NPSs epitaxy, ODR chip process, n-surrounded electrode, etc. based on AlN epitaxy on nano patterned sapphire substrate, the dislocation density of NPSs AlN film is reduced by 50%, which can significantly improve the internal quantum efficiency of UV LED, and the light extraction efficiency of NPSs devices is also improved. Moreover, compared with traditional DUV LEDs, the Lop of DUV LEDs with full space ODR structure is increased by 60% under 180 MA injection current.

In the aspect of electrode, aiming at the low current injection efficiency of LED, two different electrode structures are designed, n-surrounded electrode and p-surrounded electrode. It is revealed that although the active area of n-surrounded electrode is only 80% of that of p-surrounded electrode, the optical power of n-surrounded electrode is 1.4 times of that of p-surrounded electrode under 100mA current, and the optical power of n-surrounded electrode is 1.4 times of that of p-surrounded electrode With more current channels, the current congestion effect can be alleviated, the electron injection efficiency of LED can be improved, and the optical power can be improved. Moreover, the n-surrounded electrode structure alleviates the current congestion effect and reduces the junction temperature of LED.

Develop self help tools to provide low cost standard testing

The development of an industry depends not only on the progress of technology and product iteration, but also on one click convenient service for the industry. How to exchange the value of the industry, and make the exchange more smooth and simple, because the design of each LED and the radiation of the light source are not the same, according to different products using different solutions, the original unique self-help tools, can let customers quickly carry out the scheme design and light source selection in the first link, making standard light power LED light source and equipment, can be used For customers to carry out benchmarking and rapid incoming inspection.

At the forum site, deep UV technology released a low-voltage UV mercury lamp intensity simulation tool for the first time. The simulation results of the tool are highly close to the measured values, which can be effectively used to evaluate the surface radiation intensity of UV lamps, and then convert the uvc-led scheme.

In addition, for the calculation of the more complex uvc-led lamp bead light source system, firstly, according to the light distribution curve, the absolute value of light power in different angle directions of the light source is calculated and divided, and then the radiation intensity on the grid can be calculated according to the angle of the subdivision grid relative to the light source.

The three values of market value, product value and technical support value are a series of explorations and attempts of DUVTek around the customer value chain.