Open AccessLuminescent characterization of CaMgSiO4:Dy3+phosphor for white light emitting diodes
Author(s) -
Bhuneshwar Verma,
R.N. Baghel,
D. P. Bisen,
Nameeta Brahme,
Ayush Khare
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/798/1/012009
Subject(s) - phosphor , thermoluminescence , analytical chemistry (journal) , photoluminescence , luminescence , materials science , scanning electron microscope , doping , fourier transform infrared spectroscopy , emission spectrum , ion , spectral line , chemistry , optics , optoelectronics , organic chemistry , astronomy , physics , chromatography , composite material
Different concentration of Dy 3+ doped calcium magnesium silicate (CMS) phosphors are synthesized via solid state synthesis (SSS) method at high temperature. The structural properties are analyzed by X-ray diffraction (XRD). The surface microstructures are confirmed by scanning electron microscopy (SEM)and energy dispersive X-ray (EDX) spectra. The vibrational properties of the synthesized phosphor are carried out using fourier transform infrared (FT-IR) spectra. The luminescence properties are explained in terms of photoluminescence (PL) and thermoluminescence (TL) characteristics. The PL spectra showed maximum emission intensity peaking at 484 and 578 nm, which are attributed to the 4 F 9/2 → 6 H15/2 and 4 F 9/2 → 6 H 13/2 transitions of Dy 3+ ion respectively. The PL properties of the prepared phosphors are carried out at room temperature. The maximum PL intensity occurs at 0.5 mol% of doping concentrationof Dy 3+ ions due to concentration quenching. The glow peak and TL parameters of the prepared phosphors are computed by means of peak shape method. The CIE color co-ordinates are originated (x= 0.3263, y= 0.3451) and correlated color temperature (CCT) are determined to be 5769 K. The results indicate that the prepared phosphor produces cool light in the white region.