Abstract
ABSTRACT In this work, NH4Cl flux-assisted solution combustion synthesis of Eu3+-doped CdSiO3 phosphor has been reported. The prepared phosphor has been characterised using XRD, SEM, FTIR, UV–Vis and PL techniques. The influence of NH4Cl flux on the structural, morphological and photoluminescence (PL) properties has been thoroughly investigated. The PL spectra of 5 mol% Eu3+-doped CdSiO3 nanophosphor monitored at Eu3+ emission wavelength of 613 nm, consists of four broad excitation peaks centred at 362 nm, 381 nm, 393 nm and 414 nm ascribed to Eu3+ ion transitions from its 7F0 ground state energy level to different excited energy states 5H3, 5L7, 5L6 and 5D3, respectively. CdSiO3:Eu3+ samples prepared by using 6 wt% flux showed appreciable improvement in emission intensity in the studied concentration limit. The observed improvement in the orange-red photoluminescence is due to effective substitution of Eu3+ ions in the CdSiO3 lattice.
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