Nano-Composite Phospho-Silicate Co-Doped With Ho3+ And Yb3+ Ions For New Up-Down-Shifting Applications

Shaker, Zainab; El-shaarawy, Mervat; Shash, Nabil; Khoder, Hanem; Salem, Mohamed; Battisha, Inas

doi:10.21608/ejchem.2021.78927.3861

Nano-Composite Phospho-Silicate Co-Doped With Ho3+ And Yb3+ Ions For New Up-Down-Shifting Applications

Document Type : Original Article

Authors

¹ Physics Department,Faculty of science,Banha University, Benha, Egypt

² Solid state Physics, Faculty of Science, Benha University, Egypt

³ National Research Centre, Solid State Physics Department, Physics Research Division,33 El Behooth St., Dokki, Giza, Egypt, (Affiliation ID: 60014618).

⁴ Solid State Physics Department, Physics Research Division,National Research Center, Cairo, Egypt

10.21608/ejchem.2021.78927.3861

Abstract

Nano-composite Phospho-Silicate (SiO2 - P2O5) co-doped with trivalent (Ho3+) and (Yb3+) ions, respectively are considered as promising materials for photonic application. The nano-composite samples were prepared and their unique optical spectroscopic and structural properties were studied as a function of constant concentration of Ho3+ions at (0.5) mol. % and different concentrations of Yb3+ ions at (0.5, 0.1 and 1.5) mol. % and elevated temperature. The samples structure was studied using X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). Moreover, the crystallite sizes were increased by increasing the Yb3+ ions concentrations at 900oC to give the following values 11.7, 16.96 and 33.76 nm for (0.5), (0.1) and (1.5) mol.% of Yb3+ ions, respectively. Optical studies were measured by using the spectrophotometer in wavelength range 300–2500nm.The refractive index (n) was calculated for the prepared samples, it was found to be strongly affected by structural rearrangement resulting from the elimination of the solvent and it increases by increasing phosphate concentrations and annealing temperature, It was increased from (1.59 to 1.67) and from (1.75 to 1.78) at constant wavelength 550 nm after annealing at 300 and 9000C for (0.5, 0.1 and 1.5 mol. % of Yb3+ ions), respectively. The photoluminescence (PL) confirms that the phospho –silicate could be a promising candidate to be used for up-down –conversion application.

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