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One of the persistent luminescence materials and providing emission in blue-green areas emission bands for typical phosphors (SrAl_2O_4:Eu^{2+}, CaAl_2O_4:Eu^{2+}, MgAl_2O_4:Eu^{2+}) are generally focused on recently. These systems are reliable, stable, not containing radiation and they have long term photoluminescence emission. These systems are mainly used in a wide range of products such as building,...
Novel inorganic luminescent materials have provided improvements in lighting, display, and optical devices. They are generally used for decorative applications, safety signs, and tolls. The characteristics of the photoluminescent pigments depend on both physical and chemical characteristics. In this study, particle size distribution effects on the after-glow time of the bluish-green and yellowish-green...
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