Effects of Sm3+ on Luminescent Properties of LiEu(0.55-x)Y0.45 (WO4)2Smx Red Phosphor

Euroinvent ICIR 2018

Zailani, N.S.^1 ; Ghazli, M.F.^1,2 ; Hussin, R.^3 ; Abd Rahim, S.Z.^1,2 ; Mat Saad, M.N.^1,2

School of Manufacturing Engineering, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^1

Center of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^2

Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia^3

关键词: Environmental issues;    Host lattice;    Luminescent property;    Phosphor materials;    Photoluminescence spectrum;    Red phosphors;    Reference patterns;    White lightemitting diodes (WLEDs);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/374/1/012001/pdf
DOI  :  10.1088/1757-899X/374/1/012001

来源: IOP

【 摘 要 】

Phosphor materials have been widely applied in lighting and displays. Rare earth elements are amongst important elements in giving luminescent properties to the phosphor. The needs to reduce rare earth element in phosphor is of interest due to cost and environmental issue. The red phosphor LiEu(0.55-x)Y0.45(WO4)2were synthesized by substituting Sm3+in the lattice using solid-state reaction. The effect on the substitution of Sm3+which acts as an activator will be analysed using X-ray powder diffraction (XRPD), scanning electron microscope (SEM) and photoluminescence spectra (PL). The structure of the compound was found to be as a monoclinic which referred to the reference patterns. The optimum amount was recorded for the activator to be obtained in the host lattice for replacing the Eu3+place as well as enhancing the intensity of the emission. The findings reveal that LiEu(0.55-x)Y0.45(MoO4)2Smxcan be a more efficient red phosphor candidate used white light emitting diodes (WLEDs) applications.