With the continuous development of LED technology, the lighting market has higher and higher requirements on color rendering index and backlight market has higher and higher requirements on color gambit, making high-performance red powder and green powder matching them gradually become the main force supporting the whole LED lighting market. In this regard, Liang Chao said, if there is no good red and green powder, the product can not be done, or the technology can not be improved. Because this is a necessary condition, without it, the product cannot be implemented.
Obviously, phosphors that meet the requirements of high color rendering and high color gamut will gradually dominate the future market. However, the current high color rendering schemes for lighting still have obvious deficiencies. Liang chao explained that, mainly because the excitation spectrum of red powder now extends to the area close to red light, strong re-absorption of yellow and green light is generated, which leads to the decrease of light efficiency with the increase of color development index or the decrease of color temperature. If the reabsorption problem can be alleviated, the overall LED light efficiency may be improved by 20-30% in the future, but this may depend on the development of the new system red powder.

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