The Ministry of Industry and Information Technology today issued the "Rare Earth Industry Development Plan (2016-2020)". The plan proposes that by 2020, a new pattern of rare earth industry with rational development, orderly production, efficient utilization, technological innovation and coordinated development will be formed. The industry as a whole will enter the development stage of high-end application and high added value, giving full play to rare earths. The strategic value of the application function.
The "Plan" pointed out that the application industry of rare earth luminescent materials has been expanding in the past few years. The luminous efficiency of LED devices has increased from 90 lm/W to over 150 lm/W.
The "Planning" points out the main challenges currently faced: First, the overcapacity of rare earth primary products, illegal exploitation, and illegal production are repeatedly prohibited, resulting in low prices of rare earth products, not reflecting the value of scarce resources, and urgently demanding further regulation of industry order and strict control of increments. Optimize the processing stock of rare earth primary products and eliminate backward production capacity.
Second, China's rare earth industry is in the middle and low end of the world's rare earth industry chain. There is still a big gap between high-end materials and devices and advanced countries. Lack of independent intellectual property rights technology, the industry as a whole needs to be driven by low-cost resources and factor inputs, to expand new The innovation-driven transformation of technology, new products and effective supply, optimizing the industrial structure, focusing on the development of rare earth high-end materials and device industries.
Third, the level of clean production cannot meet the requirements of national ecological civilization construction. The safety and environmental protection pressures and factor cost constraints of industry development are increasingly prominent. The tasks of supply-side structural reform, quality improvement and green sustainable development are arduous.
The "Plan" proposes that by 2020, a new pattern of rare earth industry with rational development, orderly production, efficient utilization, technological innovation and coordinated development will be formed. The industry as a whole will enter the development stage with medium and high-end applications and high added value. Play the strategic value of the rare earth application function.
Among them, in the field of high-performance rare earth luminescent materials, the development of high-performance rare earth luminescent materials and devices to meet the needs of high energy density excitation light source, full spectrum illumination and wide color gamut high definition display applications; development of high performance bio-agricultural lighting materials and devices to meet plants Photophysiological processes such as photosynthesis are needed to achieve demonstration applications in agricultural greenhouses and plant factories.
Full spectrum illumination
As we all know, the commonly used white LEDs are mainly made up of blue light-excited phosphors to produce a variety of colors, because the phosphors can supplement the different spectral requirements of the LED chip's emission wavelength, and produce different light colors. The quality of the phosphors is for white LEDs. Play a key role.
In order to meet the needs of end users, downstream chip-level packaging companies have also put forward higher requirements for upstream LED phosphor materials. Such as high color rendering, full spectral wavelength, excitation efficiency, uniformity of particle size distribution, high temperature resistance and color drift dispersion of long-term aging.
In addition, the LED phosphors currently used in the LED light source used in the market are excited by blue light of 450-460 nm, and the blue light absorption conversion efficiency is insufficient, mainly lacking blue-green light of 480 nm-505 nm and deep red light of 660 nm-700 nm. In particular, high color temperature white light with a color temperature of more than 5000K may cause a large amount of blue light to be effectively converted.
The high-color full-spectrum LED light source is compared with the conventional LED light source. The biggest difference between the two is that the former increases the emission peaks around 490nm and 660nm, which complements the missing spectral part of the conventional LED light source, which greatly increases the overall spectral continuity and thus approaches In the full spectrum of sunlight.
At present, the main applications of full-spectrum LED phosphors are divided into two types: the first one is to specifically improve the color rendering index and light efficiency. At present, the color rendering index Ra can reach 97 or even 98, and under the premise of the same indication, Its light efficiency can be improved by about 2% compared to the current double powder solution on the market. This application is mainly for performance priority, but the spectral continuity is not perfect.
The second application is to pursue the best emission spectrum, simulate the solar spectrum, and its spectral defects can be minimized, effectively reducing the blue light hazard, but the light effect will be slightly reduced.
Wide color gamut HD display application
The wide color gamut provides LCD backlighting to display a wider color gamut as a whole and a more realistic red color.
This technology allows screen makers to create the brightest and brightest LED HD display screens that can be used in a variety of devices, including next-generation mobile devices and high dynamic range imaging (HDR) TVs.
This technology can provide the narrowest band of red light into the LED backlight, which can produce a picture with better quality than the standard. This breakthrough quality enhancement brings a broader overall color to the LED-backlit display, enhanced red saturation (Saturation), and a stronger contrast.
Achieving a perfect red effect has always been one of the challenges for LED display manufacturers, as it represents a trade-off between screen brightness and appearance, as the red effect will look orange or darker. Use a clear color gamut to enhance picture quality.
High performance bio-agricultural lighting materials and devices
The LED agricultural lighting market is closely related to the development of modern agriculture. However, at present, there are still many difficulties in the development of facility agriculture such as plant factories, and the application of LED light sources is not very sufficient.
Plant factories are one of the main areas of LED agricultural lighting applications, and there are now many large and small plant factories.
As the fourth generation of new illumination sources, LED has many different characteristics from other electric sources, which makes it the first choice for energy-saving and environmentally friendly light sources.
LEDs used in the field of plant culture have the following characteristics: the wavelength type is rich, which coincides with the spectral range of plant photosynthetic and photomorphological formation; the spectral wave width is half-width narrow, and can be combined to obtain pure monochromatic light and composite spectrum as needed; The light illuminates the crop evenly; it not only regulates flowering and fruiting, but also controls plant height and plant nutrients.
At present, the high-power lamps of agricultural lighting LEDs can reach 1000W, which poses a challenge to the design of LED lamps. More importantly, the spectral design requirements of LED plant growth lamps are also relatively high. Compared with traditional light sources, the emission bands are more concentrated. At present, it is more feasible to use five-band integrated LED growth lamps.
As a plant illumination source, LED has many advantages in promoting plant growth, regulating plant morphology, energy conservation and environmental protection. It can be widely used in plant cultivation, greenhouse light supplementation, plant tissue culture, plant factories and aerospace. It is the future plant lighting. The important development direction of light source.
Golf Buggy Lithium Battery,Golf Cart Trolley Buggy Battery,Carts Golf Buggy Battery,Golf Buggy Trolley Lithium Battery
Shaoxing Honyo International Trading Co., Ltd , https://www.honyopower.com