氮(氧)化物农用转光材料的合成及性能调控研究

本项目针对目前可用农用转光材料品种少、光谱匹配度差、稳定性差、寿命短、转光效率低等系列不足，研究氮(氧)化物荧光粉组成、结构和转光性能之间的相互影响规律，通过调控稀土离子或过渡金属离子掺杂碱土金属氮(氧)化物的共价性、形貌、吸收和激发波长、发射波长等，提高材料稳定性及转光效率，获取多种蓝色发光、红色发光的转光率高、光谱匹配好、稳定性高、性价比高、生态友好的农用转光材料。本项目的研究和完成，将开拓氮(氧)化物发光材料在农业领域的新应用，可望满足现代生态农业用新型转光材料的现实需要，进而获得具有我国自主知识产权的农用转光材料体系及其新型制备技术；同时亦为更多新型、高性能、实用性氮(氧)化物发光材料的开发提供基础数据积累及技术指导，推动新型氮(氧)化物荧光粉研究开发进程。

This project is presented based on these drawbacks that the current available agricultural light-converting materials is less of varieties, poor spectral compatibility between the emission spectra of these light-converting materials and the absorption spectra of chlorophyll, poor chemical stability, short service lifetime, low light-converting efficiency, and so on. This project focuses on the study of the relationship between the chemical compositions, structures and light-converting properties of rare earth ions or transition metal ions doped alkaline metal (oxy)nitride phosphors. The research strategies including the design of the nephelanxetic and covalent character within various (oxy)nitride matrix, controlling of the morphology, screening the absorption, excitation, and emission spectra, enhancing the chemical stability, and improving the light-converting efficiency. The target of this project is to achieve various novel agricultural applicable blue and red light emitting light-converting materials with excellent characters including higher light-converting efficiency, good spectra matching, better stability, cost-effective, and eco-friendly. Accordingly, the completion of this study will open up a new application of (oxy)nitride luminescence materials in the field of agriculture, and the obtained novel light-converting materials is expected to meet the application requirements of modern ecological agriculture. Through these research processes of this project, new preparation technology for novel agricultural applicable light-converting materials with independent intellectual property rights will be obtained. At the same time, basis data accumulation and technical guidance for more novel (oxy)nitride phosphor with high performance and practicability will be provided, which will necessarily promote the research and development process of novel (oxy)nitride phosphors.