摘要
用高温固相法制备了铕镝掺杂的铝酸锶长余辉发光材料,通过改变Sr/Al使该类材料各自发紫光、蓝光、蓝绿光、绿光、黄绿光和黄光。光谱分析表明,当Sr/Al=0.4时发光强度最强,余辉时间最长,此时材料发黄绿光。随着Sr/Al的减小,材料的发射光谱峰值波长蓝移,激发光谱峰值波长先红移后蓝移。XRD分析可知,Sr/Al的改变使材料的晶形结构发生改变,从而影响了材料的发光性能。
Europium and dysprosium co-doped strontium aluminates long persistence phosphors was synthesized by the solid phase. This kind of material could respectively emit purple, blue, blue-green, yellow-green, yellow light by means of the alteration of Sr/AI. Spectra test revealed the material had the best luminescence intensity and the longest aflelflow when Sr/Al=0.4, it emited yellow-green light. Wave length of emission spectra peak shifted to shortwave with the reduction of Sr/Al. While wave length of excitation spectra peak firstly shifted to shortwave after shift to longwave. XRD showed the alteration of Sr/Al made crystal structure change, therefore, Sr/Al affected on luminescence properties of this material.
出处
《化工技术与开发》
CAS
2013年第8期10-13,共4页
Technology & Development of Chemical Industry
关键词
铝酸锶
SR
AL
高温固相法合成
发光性能
strontium aluminates
Sr/Al
high temperature solid phase synthesis
luminescence properties
