硅酸盐通报2011，Vol.30Issue(2)：457-461,5.
SrAl2Si2O8:Eu2+蓝色荧光粉制备条件优化及助熔剂作用研究
Study on the Optimized Conditions of Preparation of SrAl2Si2O8: Eu2+ Blue Light Emitting Phosphor and Role of Flux
摘要
Abstract
A series of luminescence phosphors SrAl2Si2O8: Eu2+ were prepared via solid-state reaction in weak reduetive atmosphere. The effect of the first firing temperature (FFTE), the first firing time (FFTI), the second firing temperature (SFTE) and the concentration of flux H3BO3 (CFB) on the spectrum characteristics and structure of the sample were investigated. It was shows that the best luminescence capability of the sample SrAl2Si2O8: Eu2+ is ignited firstly at 1050 ℃ for 180 min and secondly at 1050 ℃ for 240 min with a concentration of 6. 0 wt％ H3BO3. X-ray diffraction (XRD)patterns disclosed that the superfine SrAl2Si2O8: Eu2+ exhibites a monoclinic crystal structure. A broad excitation spectrum consists of four excitation bands, which locate between 220 nm and 400 nm, the maximum emission wavelength is 352 nm. The emission spectrum, which is a broad band between 370 nm and 600 nm,can be fitted by two peaks at 406 nm and 441 nm and its apparent peak is at 408 nm.With boric acid content increasing, XRD patterns intensity increase while FWHM of XRD patterns, the lattice parameters (a, b, c) and unit cell volume of phosphor SrAl2Si2O8: Eu2+ decrease.关键词
LED/荧光粉/锶长石/制备条件/助熔剂Key words
LED/ phosphors/ Sr-feldspa/ ormation conditions/ flux分类
数理科学引用本文复制引用
王飞,田一光,张乔,赵文光..SrAl2Si2O8:Eu2+蓝色荧光粉制备条件优化及助熔剂作用研究[J].硅酸盐通报,2011,30(2):457-461,5.基金项目
国家自然科学基金(No.20771086)资助项目 （No.20771086）
