The influence of amphiphilic additional agents on the morphology and photoluminescence properties of calcium carbonate phosphor

In order to investigate the effect of amphiphilic additional agents on the morphology (particle shape, particle size and particle size distribution) and photoluminescence performance of calcium carbonate phosphor, the phosphors AA-CaCO 3 :Eu 3+ (AA = glycerol or sodium dodecyl sulfate) were synthesized by the microwave-assisted co-precipitation method using glycerol (Gly) and sodium dodecyl sulfate (SDS) as amphiphilic additional agents (AA), respectively. The phase structure, morphology and luminescent properties of the as-synthesized samples were characterized by X-ray diffraction, scanning electron microscope, laser diffraction particle size analyzer and Fluorescence spectrophotometer, respectively. The results showed that the phase structure and morphology of AA-CaCO 3 :Eu 3+ changed along with different types and amount of amphiphilic additional agents evidently. The particle size of Gly-CaCO 3 decreased to 1.383 µm when the volume ratio reached 8:2 (Gly:H 2 O). Photoluminescence (PL) spectra show that all the AA-CaCO 3 :Eu 3+ phosphors exhibit strong red emission peak originating from electric-dipole transition 5 D 0  →  7 F 2 (614 nm) of Eu 3+ ions and the amphiphilic molecules (Gly and SDS) had a huge influence on photoluminescence intensity.