کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
239128 | 465798 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Alumina encapsulated SrAl2O4:Eu2+, Dy3+ phosphors Alumina encapsulated SrAl2O4:Eu2+, Dy3+ phosphors](/preview/png/239128.png)
Alumina encapsulation on SrAl2O4: Eu2+, Dy3+ phosphors by a new type of chemical precipitation process was reported for the first time to the best of our knowledge. X-ray fluorescent measurements revealed that using glycol instead of the distilled water as the disperse medium is helpful to alumina encapsulation. Scanning electron micrographs and BET measurements showed that a dense and homogeneous off-white alumina layer was formed on the phosphor surface after encapsulation. Water resistance and heat resistance measurements showed that when the encapsulation amount reached to 5 wt.% (fed value), the encapsulated phosphors began to show good water resistance and heat resistance with little loss of persistent phosphorescence.
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Journal: Powder Technology - Volume 177, Issue 2, 15 August 2007, Pages 83–86