کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1625019 | 1516420 | 2008 | 6 صفحه PDF | دانلود رایگان |

The green-emitting Ca8Mg(SiO4)4Cl2:Eu2+ phosphor particles were prepared by spray pyrolysis from the colloidal spray solution that contained fumed silica and ammonium chloride. The ammonium chloride was used as the source of chlorine and the flux material. The ratios of the calcium and chlorine components that were dissolved into the spray solution were changed from 1:0.25 to 1:2.5. The phosphor particles prepared from the spray solution with the proper amount of ammonium chloride added to the spray solution had fine sizes and regular morphologies. The phase-pure Ca8Mg(SiO4)4Cl2:Eu2+ phosphor particles were obtained from the spray solution that had a ratio of calcium to chlorine components in the range of 1:0.5 to 1:1.5. The post-treated phosphor particles had a broad excitation wavelength that ranged from 260 to 480 nm, irrespective of the amount of ammonium chloride added to the spray solution. The phosphor particles prepared from the spray solution with a 1:1 ratio of calcium to chlorine had maximum emission intensity under a long-wavelength ultraviolet.
Journal: Journal of Alloys and Compounds - Volume 457, Issues 1–2, 12 June 2008, Pages 429–434