以马来酸酐(MA)和吲哚啉螺 苯并吡喃(SP)为原料,在SrAl2O4:Eu2+,Dy3+(SAO-ED)发光粉的表面进行复合包覆制备MA-SP-SAO-ED复合发光粉,探讨 MA与SP的质量比,MA和SP的加入顺序对复合发光粉性能的影响,并用扫描电镜表征复合发光粉的表面...
根据Dorenbos能级模型的推论,利用掺杂Yb3+和Er3+对典型的长余辉材料SrAl2O4∶Eu2+,Dy3+(简称SAO∶ED)的发光特性(发光强度和余辉时间)进行调制。在发光特性分析中,发展并使用了一种简便易行的解析模型,而不是常用的多项e指数衰减函数的经验模型。研究发现,正如Dorenbos所预言的,Yb3+掺杂确实能够提高SAO∶ED的...
Eu2+，D y3+(SA O-E D)发光粉的表面进行复合包覆制备M A-SP-SAO-E D 复合发光粉，探讨M A与SP的质量比、M A和SP的加入顺序对复合发 光粉性能的影响，并用扫描电镜表征复合发光粉的表面涂层。结果表 明，当M A和SP同时加入SA O-E D二氯甲烷溶液中，总加入量为 SA O-E D发光粉质量的10％，且M...
Recent findings on the considerable effects of persistent luminescence (PL) decay on ML phenomena (Rahimi MR, Yun GJ, Doll GL, Choi JS. Opt Lett 2013;38:193235) have motivated the incorporation of critical factors (i.e. strain rate, stress-free PL decay time interval, photoexcitation time,...
The mode I SIF calculated from the instantaneous cumulative ML fringes showed proper agreement with the SIFs and acquired from conventional ASTM E-399 measurements under quasidynamic condition. The magnitude and shape of the theoretically predicted crack tip stress field was in accordance with the ...
Flexible 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-oxidized nanofibrillated cellulose (ONFC) films with long afterglow luminescence containing modified SrAl2O4: Eu2+, Dy3+ (SAOED) phosphors were fabricated by a template method. Tetraethyl orthosilicate (TEOS) and (3-aminopropyl) ...