Maleic anhydride coating for strontium aluminate-based phosphors
Strontium aluminate-based phosphors SrAl2O4:Eu2+,Dy3+ (SAO-ED) are coated directly by the interfacial coordination chemistry method with maleic anhydride to prevent their hydrolysis in moist air. SEM, XPS, TG and DSC methods are used to characterize the coating. The results showed SAO-ED phosphors coordinated with maleic anhydride by the coordination bond M-O C and O-M. The introduction of maleic anhydride doesnt change the excitation and emission spectra of SAO-ED phosphors, which is proved by the photoluminescence measurement. The SAO-ED phosphor coated with 30 wt. ％ maleic anhydride has higher water-resistance at the cost of a minor loss of persistent phosphorescence than that of SAO-ED phosphor.
Strontium aluminate Phosphor Coating Maleic anhydride
Shengfei Yu
Teaching Affairs Office, Shaoguan University, Shaoguan, 512005, PR China
国际会议
青岛
英文
807-810
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）