Synthesis and Characterization of Lightweight Beryllium Chloro Silicate Phosphor

In this chapter, low weight barium-based cholorsilicate Ba5Cl6Si2O6:Eu2+ is prepared through a solid-state reaction. To confirm the structure of the synthesized phosphors, powder photographs were obtained using an x-ray diffractometer. Photoluminescence spectra and FTIR spectra were recorded. Photoluminescence spectra are studied. The emission peak is observed at 407 nm at excitation 275 nm. The intense violet-blue emission is obtained. The broad excitation band and strong emission indicate that Ba5Cl6Si2O6:Eu2+could be a good phosphor candidate for blue LED and white LEDs. Decay curve indicates the phosphor has a long afterglow feature.

Ag Nanoparticles Significantly Improve the Slow Decay Brightness of SrAl2O4:Eu2+,Dy3+ by the Surface Plasmon Effect

Long afterglow luminescence material is an important energy storage material. For large-scale applications, the low afterglow brightness specially in slow decay process is a weak point. At present, the methods...

Time-resolved color-changed long-afterglow for security systems based on metal-organic hybrids

Organic solid-state materials with p-RTP (persistent room-temperature phosphorescence) properties have been made infusive achievements. However, researches on metal-organic hybrids with p-RTP are limited, in which dual phosphorescent ones are relatively...

Emergence of Long Afterglow and Room Temperature Phosphorescence Emission from Ultra Small Sulfur Dots

Sulfur dots (S-dots) are one of the most recently developed non-metallic luminescent nanomaterials which possess several advantages over traditional inorganic Quantum dots (QDs). Here, we have synthesized highly luminescent ultra-small...