İlhan M.Ekmekçi M.K.Keskin İ.Ç.2024-07-222024-07-22202120462069http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13410Trivalent Eu-activated MNb2O6(M = Sr, Cd, Ni) ceramic phosphors were produced using the molten salt route, which involves a low sintering temperature and provides improved homogeneity. The photoluminescence (PL) and radioluminescence (RL) spectra of phosphors exhibited characteristic Eu3+emissions with5F0→7Fjtransitions, and strong peaks occurred at the5D0→7F2transition. The PL and RL emissions of SrNb2O6:Eu3+decreased over 3 mol%, while both emissions for CdNb2O6:Eu3+and NiNb2O6:Eu3+increased with increasing Eu3+concentration. The spectral properties of phosphors were evaluated by determining Judd-Ofelt intensity parameters (Ω2,Ω4) from the PL emission spectrum. The quantum efficiencies (ηQE%) of MNb2O6:Eu3+(M = Sr, Cd, Ni) phosphors with the highest emission were found as 61.87%, 41.89%, and 11.87% respectively. Bandwidths (σe× Δλeff) and optical gains (σe×τ) of MNb2O6:Eu3+(M = Sr, Cd, Ni) phosphors with highest emissions were found as follows; 24.182 × 10−28, 28.674 × 10−28, 38.647 × 10−28cm3and 20.441 × 10−25, 13.790 × 10−25, 3.987 × 10−25cm2s, respectively, corresponding to the5D0→7F2transition. © The Royal Society of Chemistry 2021.EnglishAll Open Access; Gold Open Access; Green Open AccessEmission spectroscopyFused saltsJudd-Ofelt theoryLight emissionSinteringJudd-Ofelt intensity parametersJudd-Ofelt parametersLow sintering temperatureMolten saltMolten salt methodRadioluminescence spectraSpectral propertiesX ray irradiationPhosphorsArticle10.1039/d0ra10834k