单色近紫外激光泵浦旋转无机远程荧光体的红绿蓝光及核壳光散射作用机制

项目名称： 单色近紫外激光泵浦旋转无机远程荧光体的红绿蓝光及核壳光散射作用机制

项目编号： No.61205023

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 田华

作者单位： 天津理工大学

项目金额： 25万元

中文摘要： 采用单色激光泵浦旋转远程荧光体来实现RGB是全新的低成本多彩显示技术，但是强激光与远程荧光体的相互作用机理目前尚不清楚，而RGB三色中要重点解决红光发射问题。本项目提出采用405纳米的单色近紫外激光，利用Mn离子的特征红光发射，在玻璃基质中镶嵌RGB荧光晶粒的全无机玻璃陶瓷复合远程荧光体实现RGB的新方案。采用Eu/Ce/Mn离子激活的硅酸镁基质成分，制备基于Mn离子红光的红绿蓝三原色荧光颗粒，再巧妙利用低温熔化时玻璃基质和荧光颗粒两相的Si-O键合，获得荧光颗粒均匀分布的玻璃荧光板；基于一个单颗粒核/壳结构界面模型，利用瑞利-德拜散射理论，考察入射光、发射光和玻璃基质与荧光晶体颗粒之间界面的相互作用，关联光的抽取效率与荧光颗粒大小、空间分布、核壳厚度比及折射率之间的关系。研究结果可以深化强激光与固体荧光材料相互作用机制的认识，为完善单色激光多彩技术的显示材料提供科学的解决方案。

中文关键词： A3MgSi2O8:Eu2+;Mn2+；荧光板；低熔Si-O键合；转光效率；光学模拟

英文摘要： By using monochromic laser to pump rotating remote phosphor to achieve RGB color mix is a new low-cost colorful display technology, but some fundamentals still need to be recognized, such as the interaction between high power laser and the solid remote phosphor, and the realization of red light in RGB color mix. This project proposal is to try to use 405 nm monochromatic near-ultraviolet laser to pump the remote phosphor. The phosphor is a variety of glass ceramic phosphor consisting of luminous crystal particles embedded in the glass matrix, particularly with red emission from Mn ions. The trichromatic phosphors are based on magnesium silicate materials actived by Eu/Ce/Mn ions, particularly the red-light-emitting phosphors actived by Mn ions. The inorganic glass ceramic phosphor will be prepared by melting silica at low temperature with a strategy of subtly using Si-O bonding from both phases to obtain composite bulk with uniformly -distributed particles embedded in silica glass matrix. A single particle core-shell structure model will be established based on the Rayleigh-Debye scattering theory, to examine the interaction of incident light and extracted light on the interface between phosphor particle and glass matrix. A relationship is to be established to correlate the extraction efficiency with the size of

英文关键词： A3MgSi2O8:Eu2+;Mn2+；phosphor plate；low-temperature Si-O bonding；light-conversion efficiency；optical simulation