余辉
荧光粉
磷光
持续发光
发光
发射强度
作文(语言)
分析化学(期刊)
发射光谱
存水弯(水管)
化学
材料科学
光电子学
热释光
光学
物理
谱线
荧光
天体物理学
环境化学
伽马射线暴
哲学
气象学
语言学
天文
作者
Zhao‐Xin Yuan,Chengkang Chang,Dali Mao,Weijiang Ying
标识
DOI:10.1016/j.jallcom.2004.01.063
摘要
This paper discussed the effect of composition on the afterglow phosphorescence of Sr4Al14O25: Eu2+, Dy3+ phosphors. The different composition did not make any difference on the emission peaks of the phosphors. All the phosphors show a broad band emission peak at λ=490 nm. However, long afterglow properties of the phosphors were influenced by the composition of starting materials. Al-rich phosphors have better long afterglow properties with high emission intensity and longer decay time than the phosphors rich in Sr, which can be ascribed to the different trap levels and trap concentrations formed in the hosts.
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