| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9783021 | Materials Chemistry and Physics | 2005 | 5 Pages |
Abstract
A new chemical precipitation method for silica encapsulation was firstly used in surface treatment of SrAl2O4:Eu2+, Dy3+ phosphors. X-ray fluorescent spectrometer (XRF), FTIR and scanning electron microscopy (SEM) results showed that a dense layer of silica is formed on phosphor surface after being encapsulated for 2.5 h under the condition of pH 10.5 and T = 80 ± 1.0 °C. Water-resistance and photoluminescence measurement results showed that encapsulation amount and dispersing media play an important role in water-resistance of phosphors. Using glycol as dispersing media and controlling encapsulation amount at 5 wt.% would effectively improve water-resistance of SrAl2O4:Eu2+, Dy3+ phosphors at the cost of a minor loss of persistent phosphorescence.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Xingdong Lü,