The influence of concentration variation on the spectroscopic behavior of Sm3+-doped zinc-lead-phosphates glasses for orange and reddish-orange light-emitting applications: experimental and Judd-Ofelt approach

A spectroscopy study was performed to investigate the absorption and emission behavior of zinc-lead phosphate-doped Sm3+ glasses sample. The parameters, density, rho, molar volume, V-m, samarium ion concentration N, and mean samarium ion separation, R were calculated. The absorption peaks were assigned and discussed. The band gap and Urbach's energies analysis were illustrated. The emission spectra and the emission lifetime decay were studied. The CIE diagram coordinate (0.393, 0.601) of the sample's emission was very close to the TV standard value. The oscillator strength f(cal) and f(exp) were calculated using Judd-Ofelt theory, and the model parameter trend was found to be omega(4) > omega(2) > omega(6) which indicates high glasses rigidity. The Absorption and emission cross-sections were studied and illustrated. The obtained optical parameters, absorption, and emission behaviors introduce the samples under investigation as a candidate for orange and reddish-orange photonic applications.