Souadi, G. O.Kaynar, Ümit H.Ayvacıklı, M.Canımoğlu, A.Can, N.2022-02-152022-02-1520220022-23131872-7883https://doi.org/10.1016/j.jlumin.2021.118512https://hdl.handle.net/20.500.14034/422Undoped BaSiF6, Dy3+ doped BaSiF6, and Dy3+, Li+ co-doped BaSiF6 phosphors were synthesized through a gelcombustion method. The prepared samples were characterized by powder x-ray diffraction (XRD), Fourier transform infrared (FTIR), energy dispersive x-ray spectroscopy (EDS), and photoluminescence (PL) techniques. The XRD data revealed that both the Dy3+ doped and Li+ co-doped BaSiF6 phosphors exhibited a single-phase structure belonging to the space group R (3m) over bar which matched well with the standard JCPDS files (No. 002-6613). FTIR spectra showed absorption bands at 3417 cm -1 , 1640 cm(-1), and 1620 cm(-1) corresponding to water molecules. EDS analysis confirmed the chemical composition of the prepared samples. The PL emission spectra of BaSiF6:Dy3+ by different co-doping concentrations of Li+ exhibited prominent emission peaks at 490 nm, 572 nm, 672 nm and 758 nm. The incorporation of Li+ is beneficial for enhancing the photoluminescence intensity. The optimum Li+ amount was 8% for BaSiF6:Dy3+ and then started to decrease. The enhancement could be due to the occurrence of oxygen vacancies due to the incorporation of Li+ ions. The x = 0.301 and y = 0.361 coordinates of this phosphor with varying Li+ dopant concentration determined by the Commission Internationale de l'Eclairage (CIE - 1931) were in the white range. The present work demonstrates how a simple and effective method can be used to prepare novel nanophosphors for applications in the field of visible light emitting devices with enhanced white emission.eninfo:eu-repo/semantics/closedAccessBaSiF6Rare earthGel combustion methodW-H methodEnhanced photoluminescenceConcentration quenchingHydrothermal SynthesisAmorphous Sio2CathodoluminescenceLuminescenceAbsorptionEmissionSilicaDefectArticle10.1016/j.jlumin.2021.118512241Q2WOS:0007101480000022-s2.0-85116499628Q2