Effect of Surfactants on Morphology and Luminescent Properties of YAG:Ce Phosphors

Abstract:

Using anionic surfactant sodium dodecylsulfate (SDS), cationic surfactant cetyltrimethylammonium bromide (CTAB) and nonionic surfactant polyethylene glycol 20000 (PEG20000) and glyceryl monostearate (monostearin) respectively, Ce-doped Y₃Al₅O₁₂ (YAG:Ce³⁺(6%)) yellow phosphors were prepared by a combination method of high energy ball milling and solid state reaction. The effects of surfactant type on structure, morphology and luminescence properties were investigated by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and fluorescence spectrometer. The results showed that the crystal structure of YAG:Ce³⁺ phosphors were not changed with the introduction of surfactants,but their morphology was greatly influenced. The maximum PL intensity was obtained for the nonionic surfactant PEG20000 due to the more uniform morphology and size as well as more homogeneous distribution of particles. Also, the results demonstrated that surfactant concentration had a vital effect on morphology and fluorescent properties of the phosphors,and the optimum amount of surfactant is 10 wt%.

• Periodical: Materials Science Forum (Volume 815)
• Pages: 313-317
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.815.313
• Online since: March 2015
• Authors: Jia Ming Zhu, Zhong Min Wang, Song Tao, Ying Peng
• Keywords: Luminescent Intensity, Morphology, Surfactants, YAG:Ce Phosphors

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