LED植物照明用新型高效荧光粉的制备与性能研究

本项目以LED植物照明为应用背景，研制新型植物照明LED灯用蓝光、红光或品红光（蓝光与红光按一定比例混合）荧光粉。具体研究内容如下：1）利用固体组合化学方法，研究碱土金属复合铝硅酸盐体系的三元相图，寻找新的材料物相，研究这些新相的组成和结构，以Eu2+、Ce3+、Mn2+、Mn4+等单掺或共掺为激活剂，以期获得适合于近紫外光芯片激发的高效碱土金属复合铝硅酸盐体系植物照明LED用蓝光、红光或品红光高效发光材料。2）对以上基质物相构成和晶格结构进行调变，优化其发光性能，以期获得适合近紫外光芯片激发与植物光合作用所需光谱相吻合的新型高效植物照明LED用蓝光、红光或品红光荧光粉，并获得本体组成-结构-发光性能之间的科学规律，为LED植物照明用新型发光材料的设计和探索提供思路和路线。3）根据植物生长需要，设计和制备出适合植物生长所需的廉价、高效LED植物照明光源。

Taking LED plant lighting as application background, the project is going to explore new phosphors for plant lighting LED with blue, red, and pink (blue and red with a specific ratio) light emission. The specific research content is shown as follows: Firstly, we will investigate the ternary phase diagram of alkaline-earth composite aluminum silicate, inspect the composition and structure of these new phase to looking for new host materials for LED plant lighting phosphors. The Eu2+, Ce3+, Mn2+, Mn4+ ions will be singly or doubly doped in these new obtained alkaline-earth composite aluminum silicate to get high efficient blue, red and pink emission phosphors for LED plant lighting. The energy distribution of the emission spectra will be tuned by tuning the doping ratio and species of doping ions, e.g., Eu2+, Ce3+, Mn2+, Mn4+ ions to get the composition and the synthesis conditions of high efficient composite aluminum silicate phosphors. Secondly, we will modulate the matrix phase composition and lattice structure of the above obtained alkaline-earth composite aluminum silicate phosphors to get high efficient luminescence with emission spectra matching well with that of blue, red and pink light required by plant photosynthesis. Also, we will investigate how the chemical composition, crystal structure of host lattice influence the luminescence properties of the doping active ions in phosphors. Hopefully the current research will provide some new ideas for design and synthesis new phosphors for LED plant lighting. Finally, based on the above achievements and the requirements of plant growth, we will try to design and fabricate the LED plant lighting device with high efficiency and low cost.