Synthesis of Sm3+ Doped With Tio2 Nanoparticles Powder as Mid-Ir Optical Filter

Abstract

Samarium ions doped TiO2 nanoparticles were prepared successfully via Sol-Gel Technique with varying conditions. Effects of Sm3+ doping concentrations on the optical properties in the mid-infrared region was studied. FTIR spectra for pure and doped samples after annealing process show a single transition peak at wave number around 1109 cm-1 and 1116 cm-1 respectively, the wave number of the single transition peak depends on the Sm+3 doping ratio. By Comparing with wavelength of the high transition ratio of the pure TiO2 sample, slightly decries shift on the peak wavelength occur with an increment of doping concentration ratio. The FTIR spectrum gives a good indication the direction of synthesis of optical band-pass filter at a wavelength around 8.964µm (~1116 Cm-1).

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“…The peaks at 1134 cm −1 , 667 cm −1 , 515 cm −1 and 458 cm −1 are attributed to Ti-O bond (Figure 3b). The peak at 1134 cm −1 and 667 cm −1 refer to symmetric O-Ti-O stretch while the peak at 458 cm −1 and 515 cm −1 are due to the vibration of Ti-O bond [49]. Iron oxide shows peaks between 2955 cm −1 and 2857 cm −1 in both samples [50].…”