Filter paper as template for synthesis of cerium-doped Yttrium aluminum garnet phosphors

摘要

Cerium-doped yttrium aluminum garnet phosphors with laminar structure were synthesized by a very simple method using filter paper as the structure template at 1100 deg C. Three thin plate samples with different morphology were prepared via the different preparation procedures. The crystalline phase, composition, surface morphology and luminescence property of the synthesized samples are investigated by X-ray diffraction, energy dispersive X-ray analysis, scanning electron microscopy, and photoluminescence spectrum. Results indicate that the metal cations are combined with the filter paper templates and are self-assembled on the surface of filter paper. The self-assembly induced the growth of YAG: Ce crystal and the formation of the plate-like YAG: Ce samples. These plate-like bulky grains are composed of YAG: Ce nanoparticles (about 30 nm), and they show yellow-green fluorescent emissions. The YAG: Ce with laminar structure facilitates the increase of PL intensity.