3D打印用纳米稀土铝酸盐发光材料的可控制备及其应用研究

本项目面向国家和广东省稀土发光和3D打印战略性新兴产业发展的需求，在充分调研稀土发光材料应用发展以及3D打印前沿技术基础上，结合本人及课题组前期在纳米稀土发光材料的设计和可控制备、稀土离子间能量传递研究以及LED器件中应用的学术积累，针对3D打印技术发展需求，本项目拟开发出适用于3D打印的稀土纳米发光材料，促进打印材料多功能化。.传统粉体发光材料形貌不规则、尺寸较大（3-20μm），在有机相中易沉降，不能直接应用于3D打印；而纳米上转换发光材料制备过程复杂，激光难以用于整体显示。为克服以上问题，本项目拟采用溶胶-凝胶法设计制备出形貌均匀的纳米铝酸盐稀土发光材料，将它们均匀地分散在光学透明的打印材料中，采用熔融沉积（FDM）和立体平板印刷（SLA）技术进行3D打印。研究这种具有新组成、新颖纳米结构材料的发光性质以能量传递，使其在近紫外LED芯片激发下发光并且光色可调，开拓稀土发光材料新应用。

This project responds to the strategic needs of Nation and Guangdong Provience on rare-earth luminescence and 3D Printing. With investigating of the novel application of rare-earth luminescence materials development and the forefront of 3D printing technology, we combine our academic nbsp;accumulation nbsp;on the design and controlled preparation of nano rare earth luminescent materials, the energy transfer between rare earth ions and the application in LED device, this project will carry out nanoscale rare earth aluminate luminescent materials which suitable for 3D printing, and promote the multi-function of 3D printing materials.. Conventional bulk luminescent materials with irregular morphology and large size (3-20μm) are easily to precipitate in organic phase and cannot be directly used in 3D printing field. However, the preparation process of nano-upconversion luminescent materials is complex, meanwhile it is difficult for laser light source to be used for the whole display. In order to overcome the above problems, this project intends to design and prepare nano-sized rare earth aluminate luminescent materials with uniform morphology by sol-gel method, distribute them evenly in optically transparent printing materials, and use fused deposition modeling (FDM) and stereo lithography apparatus (SLA) technologies for 3D printing. The luminescence properties and energy transfer of this novel nanoscale structured material with new components are studied, so that it can emit light under excitation of near-ultraviolet LED chips and the light color can be adjusted. The new applications of rare earth luminescent materials are explored.