Structural, photoluminescence, and optical characteristics of a Sm3+ -doped lead borate-strontium-tungsten glass system: Evaluation of Judd-Ofelt intensity parameters and radiative properties
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Summary
This summary is machine-generated.This study synthesizes lead borate-strontium glasses doped with samarium ions, revealing structural and optical properties. These samarium-doped glasses show potential for orange and red light-emitting devices and laser applications.
Area Of Science
- Materials Science
- Solid State Physics
- Optical Materials
Background
- Lead borate-strontium glasses are explored for optical applications.
- Doping with rare-earth ions like samarium (Sm3+) can modify glass properties.
Purpose Of The Study
- To synthesize and characterize a novel lead borate-strontium glass system doped with samarium ions (Sm3+).
- To investigate the structural modifications and optical properties influenced by Sm3+ concentration.
- To evaluate the potential of these glasses for optoelectronic applications, particularly in laser and light-emitting devices.
Main Methods
- Melt quenching technique for glass synthesis.
- Fourier transform infrared (FTIR) spectroscopy to analyze glass network structure.
- UV-vis-NIR spectroscopy for optical absorption spectra and evaluation of optical constants.
- Fluorescence lifetime decay measurements.
- Photoluminescence spectroscopy and Judd-Ofelt (J-O) theory analysis for optical transitions.
Main Results
- FTIR confirmed the presence of B-O-B bridges, BO3, and BO4 units in the glass network.
- Optical constants, including bandgap energy and refractive index, were determined.
- Fluorescence lifetimes ranged from 1.04 to 1.88 ns.
- Photoluminescence spectra showed four distinct transitions for Sm3+ ions.
- Judd-Ofelt analysis revealed Ω4 > Ω6 > Ω2 intensity parameters and high lattice asymmetry.
- Branching ratios and lifetimes indicate suitability for laser applications.
Conclusions
- The synthesized lead borate-strontium glasses exhibit promising optical properties.
- Samarium ion doping significantly influences the glass structure and luminescence characteristics.
- These materials are excellent candidates for orange and red light-emitting devices and laser applications.
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