Influence of lattice strain on Er3+ ions activated magnesium zirconium phosphate phosphors: Morphological, structural, and photoluminescence properties

Abstract

Rare earth ions doped alkaline metal zirconium phosphors have recently received significant attention in several applications including light-emitting diodes (LEDs) based solid-state lighting, solar panels, barcode readers and fluorescent labels focusing on the ultraviolet (UV) to visible (Vis) spectrum photoluminescence (PL) properties. Near-infrared (NIR) PL properties of rare earth ions doped magnesium zirconium phosphate (MZP) nanophosphors characteristics have not been investigated and considered as good candidates for optical amplifier and photonics applications. In this study, erbium doped magnesium zirconium phosphate (Er 3+ doped MgZr 4 (PO 4 ) 6 ) nanophosphors containing 0.0, 0.25, 0.5, 0.75 and 1.0 mol% Er 3+ were synthesised using a sol-gel technique. The samples prepared were calcined at 900 • C. Nanopowders of the samples were examined by the transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy to determine the surface morphology, particle size, crystallographic phase, crystalline structure, and lattice strain. Increasing in the Er 3+ion concentrations do not have significant influence on the crystallite size, with an average crystallite size range from ~ 28 nm to 32 nm. However, the lattice strain parameter of the Er 3+ doped MZP samples decreased slightly as compared to the pure undoped MgZr 4 (PO 4 ) 6 . The Er 3+ dopant was found to influence the photoluminescence properties measured at room temperature under a 980 nm excitation source. Systematic analysis revealed the presence of broad emission band corresponding to the 4 I 13/2 → 4 I 15/2 transition. The results showed that 0.5 mol % Er 3+ doped sample exhibits a full width half maximum (FWHM) value of 38 nm with a long photoluminescence lifetime of 5.47 ms. The results obtained clearly demonstrates that 0.5 mol% Er 3+ doped MgZr 4 (PO 4 ) 6 nanophosphors has a huge potential for integrated photonic applications such as lighting, biosensing, compact waveguide amplifiers, and lasers with emission properties in the IR region.

Engineering of Solar Energy Harvesting Tb3+-Ion-Doped CdS Quantum Dot Glasses for Photodissociation of Hydrogen Sulfide

“…Figure S2 illustrates the PL decay curves measured under 450 nm excitation for 2 wt % CdS and 0.04 wt % Tb 3+ -CdS-doped borosilicate glasses heat-treated at various temperatures. The PL decay curves were fitted with a double exponential function, and the average lifetime was obtained using eq τ av = A 1 τ 1 2 + A 2 τ 2 2 A 1 τ 1 + A 2 τ 2 where τ 1 and τ 2 represent the time constants for each exponential decay term and A 1 , and A 2 represent their respective pre-exponential factors.…”

“…The PL decay curves were fitted with a double exponential function, and the average lifetime was obtained using eq 4 . 59 where τ 1 and τ 2 represent the time constants for each exponential decay term and A 1 , and A 2 represent their respective pre-exponential factors.…”

“…The PL decay curves were fitted with a double exponential function, and the average lifetime was obtained using eq 4. 59…”

Proton conductor NASICON-structure Li1+xCdx/2Zr2−x/2(PO4)3 as solid electrolyte for intermediate-temperature fuel cells

“…4, which agree well with the assignments reported in the previous study. [41][42][43][44] Considering that the lithium atoms located in sites with inversion symmetry are not spectroscopically active, lithium vibrations are hard to be identied. Here an attempt is made to indirectly prove the successful doping of lithium based on the movement of other bonds.…”