Morphological and photoluminescence study of NaSrB₅O₉: Tb³⁺nanocrystalline phosphor

Abstract

Nanocrystalline green-emitting phosphor NaSrB 5 O 9 : Tb 3+ was synthesized by a facile and time-efficient modified combustion method. The phosphor was characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, nanoparticle tracking analysis (NTA), field emission scanning electron microscopy (FESEM) and photoluminescence excitation (PLE) and emission (PL) spectroscopy. XRD revealed the proper phase formation. Williamson-Hall (W-H) analysis gave the crystallite sizes and lattice strain due to peak broadening. A nanoplate-like morphology was observed in the FESEM analysis. Upon excitation by 217 nm UV light, the phosphor showed characteristic green emission peaks at 487 nm, 543 nm, 596 nm and 622 nm corresponding to the 5

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

“…The Raman spectrum of sample MZP0 exhibits a weak vibration band of lattice modes positioned at 265 cm − 1 and another a weak Raman band at 309 cm − 1 , which is consistent with Zr-PO 4 modes [31]. The two weaker peaks appear at 430 cm − 1 and 625 cm − 1 are assigned to PO 4 V 2 symmetric and V 4 antisymmetric bending groups deformation vibration [32,33,34,35,36,37]. Furthermore, the weak peak at 625 cm − 1 appears to be overlapping with that of 602 cm − 1 corresponding to the oxygen ion vacancies due to the Er 3+ substitution in MZP0.…”

Research of crystallization kinetics, luminescence and abnormal thermal quenching behavior of Al2O3–B2O3–SrO glass ceramic

“…The emission peaks for the 5 D 4 → 7 F J ( J = 6, 5, 4, 3) transitions of Tb 3+ are observed at 489 nm, 544 nm, 589 and 622 nm. 39 The peaks for glass and glass ceramic are consistent and both have the highest emission intensity at Tb 3+ doping concentration of 2.8%. Fig.…”

Structural and optical properties of a new Milarite type Na3Mg4LiSi12O30:Eu3+ phosphor

“…The calculated D r values are 8.69% and 26.3% for Na + (9) and Mg 2+ (6) respectively. Since the ionic radii difference between the dopant and possible substituted cation should be lower than 30%, [ 61,62 ] this favours the occupation of Eu 3+ at Na + and Mg 2+ sites. The D r values for tetrahedral Mg 2+ (4), Li + (4) and Si 4+ (4) sites and 12 coordinated Na + were not calculated because the ionic radii of Eu 3+ for CNs 4 and 12 were not available.…”

“…The calculated D r values are 8.69% and 26.3% for Na + (9) and Mg 2+ (6) respectively. Since the ionic radii difference between the dopant and possible substituted cation should be lower than 30%, [61,62] this favours the occupation of Eu 3+ at Na + and Mg 2+ sites.…”