Photoluminescence Characteristics of Ag:Sm3+ Co-doped PVA Composites Synthesized by Chemical Reduction Method

Abstract

Films of silver-samarium (Ag-Sm⁺³) co-doped in PVA have been synthesized via chemical method. Silver nanoparticles have been synthesized at a specific consternation and redaction period via chemical reduction method, while samarium nitrate (SmCI_3.6H₂O) solutions as a source of Sm⁺³ ions. Photoluminescence (PL), Fourier-transform infrared (FTIR), UV-visible spectroscopy, and x-ray diffraction (XRD) have all been used to analyze the doped matrices as a function of Sm⁺³ ion concentration. The structural behavior of Sm⁺³ ions and silver nanoparticles has been investigated and showed randomly dispersed in the PVA network structure. The spectral diagnosis of synthesized samples demonstrated green, orange and red emission bands and these transitions arising from ⁴G_5/2→⁶H_J on 400 nm excitation. The influence of Ag co-doping has been clearly observed on the photoluminescence of Sm⁺³ ions compared with the case of without Ag co-doped, resulting from the surface plasmon resonance (SPR) of Silver nanoparticles (Ag NPs). The CIE chromaticity diagram has been used to recognize the luminescence colors of film samples.