Abstract
Industrial plaster waste (PW) which consists of high majority SiO 2 as a source was used to fabricate glass. A novel glass containing 30PW-(64.5- x ) B 2 O 3 - x Na 2 O-0.5Sm 2 O 3 (where x = 5, 10, 15, 20 mol%) and 30PW-(40- x ) B 2 O 3 –30Na 2 O- x Sm 2 O 3 (0≤ x ≤ 1.5 mol%) has fabricated using industrial plaster waste as silica source doped with Sm 3+ ions and studied their optical behavior for solid state lighting applications by subjecting the glasses to several spectroscopic measurements and applying the well-known Judd-Ofelt theory to bring out their significance in the field of optical devices. Optical absorption spectra were recorded and investigated for the signature of Sm 3+ ions. Judd-Ofelt parameters show Ω 4 >Ω 6 >Ω 2 for (5 mol% Na 2 O) low alkali content glass and Ω 2 >Ω 4 >Ω 6 for (30 mol% Na 2 O) high alkali content glass. Photoluminescence of low alkali content in the Sm 3+ ions doped glass show blue shift in their peak position than compared to rich alkali content in the Sm 3+ ions doped glass. Radiative properties were evaluated using JO parameters. Stimulated emission cross-section shows higher value for rich alkali content than low alkali content and also compared with other glasses. The energy transfer parameter for N1 glass is lower than F4 glass and both these glasses showed quadrupole-quadrupole interaction between Sm 3+ ions. R 0 (critical distance) of donor Sm 3+ ions-acceptor Sm 3+ ions separation for 30PW-64.5B 2 O 3 –5Na 2 O-0.5Sm 2 O 3 (N1) is larger than 30PW-39.5B 2 O 3 –30Na 2 O-0.5Sm 2 O 3 (F4) glass. Lifetime analysis, Commission International de L'Eclairage (CIE) chromaticity diagram and correlated color temperature (CCT) values were evaluated. From the data obtained from the investigations, we conclude that the industrial plaster waste could be used for manufacturing glasses which are useful to solid state lighting device applications. E mission Spectra of 30PW-(64.5- x ) B 2 O 3 – 5Na 2 O-0.5Sm 2 O 3 (N1) and 30PW-39.5 B 2 O 3 –30Na 2 O- 0.5 Sm 2 O 3 (F4) glasses at 403 nm excitation. • Novel glasses with high transparency were prepared using industrial plaster waste. • Sm 3+ ions were doped and studied their optical behavior using Judd-Ofelt analysis. • Glasses were optimized with respect to Sm 3+ ions concentration as well as Na 2 O (alkali) concentration. • Judd-Ofelt parameters show Ω 4 >Ω 6 >Ω 2 for low alkali content glass and Ω 2 >Ω 4 >Ω 6 for high alkali content glass. • Stimulated emission cross show higher value for various Sm 3+ ion content than that of Na 2 O varied glass series.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
