Abstract
Nano-composite monolith and thin film Alumina-Phospho-Silicates (SiO2-P2O5-Al2O3):Ln (Ln = Sm, Er, Yb) glasses activated by triply doped with three different rare earth ions (REIs) (Er3+:Yb3+:Sm3+) were prepared by modified sol-gel process. The composition of the prepared samples was as follow (SiO2:11P2O5:3Al2O3:1.2Er2O3:(1.2 - 3)Yb2O3:(0.7 - 1.3)Sm2O3). Tetra-ethyl-orthosilicate (TEOS), tri-ethyl-phosphate (TEP), erbium nitrate, ytterbium nitrate and samarium nitrate were used as precursor materials, respectively. The structure of the prepared samples was studied using X-ray diffraction (XRD), which revealed that the crystallite sizes of monolith and thin film samples both sintered at 900℃ at constant Sm3+ concentration at 1.3 mol% (SPAE1.2Y1.8S1.3) have the following values 44 and 31 nm, respectively. Transmission Electron Microscopy (TEM) of the same prepared samples was used to confirm the presence of nano-structure phase. The photo-luminescence study will be evaluated for the prepared.
Highlights
With introduction of internet super highway and increasing demand for broadband data transmission, there is an increasing demand for performance materials with high reliability and low cost small form factor components to meet the needs of miniaturised devices
The investigated nano-composite Alumina-Phospho-Silicates (SiO2-P2O5-Al2O3) pure and Triply doped with three different rare earth ions (REIs) (Er3+:Yb3+:Sm3+) have been prepared by sol-gel technique in monolith and thin film forms with sintering at different temperatures ranging from 200 up to 900 ̊C
As expected the samples monolith and thin films both sintered at 900 ̊C for three hours, results in a better crystallization of the analyzed X-ray diffraction (XRD) patterns
Summary
With introduction of internet super highway and increasing demand for broadband data transmission, there is an increasing demand for performance materials with high reliability and low cost small form factor components to meet the needs of miniaturised devices. Such components (including couplers, splitters, tunable lasers, optical amplifiers, etc.) require high grade materials and industrial low cost effective processes. It is worth to investigate the sol-gel preparation process of the prepared samples that determine the highest concentration of rare earth allowed without running into uncontrolled crystallization and clustering problems. Silica-phosphate glasses activated by Sm3+, Er3+ and Yb3+ ions were prepared by sol-gel route, using monolith and spin-coating methods. The effect of co-incorporating these two forms of materials with Sm3+, Er3+ and Yb3+ ions on the structure and optical properties will be discussed
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