摘要
采用高温熔融法一次成型制得了一种高亮度硼铝锶长余辉发光玻璃陶瓷。研究了B2O3含量对Eu2+,Dy3+共掺杂硼铝锶长余辉发光玻璃陶瓷晶相组成和发光性能的影响。XRD结果表明:随着B2O3含量增加,样品中SrAl2O4相减少,SrAl2B2O7等杂相增加,从而发光性能降低。样品的激发光谱和发射光谱显示:长余辉发光玻璃陶瓷的激发峰位于370 nm,发射峰位于520 nm,归属于Eu2+的5d→8S7/2特征发光;改变B2O3含量并不会改变样品的激发峰位和发射峰位。增加B2O3含量,降低熔点,发光亮度也降低,余辉时间缩短。B2O3的摩尔百分含量为18.53%时各项性能最佳,初始亮度可达16 cd/m2,激发停止330 min时仍能达到7.96 mcd/m2,余辉时间长达50h。
A high light long-lasting strontium aluminoborate phosphorescence glass-ceramic was prepared by melting furnace. The influence of B2O3 content on the crystalline phase content and luminescence properties of strontium aluminohorate long-lasting phosphorescence glass-ceramic was investigated. The results of XRD show that SrA12 B2O7 and other crystalline phase increase with the increasing of B2O3, and the amount of SRA12O4 crystalline phase decreases, which lowers the luminescent properties. The excitation peaks of samples are at about 370 nm, and samples have the similar emission spectra that peak at 520 nm attributed to 5d→^8S7/2 of divalent europium; the peaks of excitation and emission spectra of samples change little with the content of B2O3. The melting point is decreased with the increasing of content of BzO3, brightness and afterglow decay time are also decreased. The optimized properties are available when 18.53% B2O3 is fed, the initial brightness is 16 cd/m^2 , and the brightness is 2.96 mcd/m^2 more 330 min after stopping the irradiation. The phosphorescence of sample 2^# still can be seen in dark 50 h after the irradiation.
出处
《华东理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第3期369-372,398,共5页
Journal of East China University of Science and Technology
