International Journal For Multidisciplinary Research

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Synthesis, Characterization and Photoluminescence Studies of near-UV excitable green-emitting NaBaScSi2O7: Eu2+ phosphor with high Internal Quantum Efficiency and Remarkable Thermal Stability

Author(s) Vinita Chouhan, Nidhi Malviya, Nazish Khan, Shilpi Rawat
Country India
Abstract Green-emitting phosphor NaBaScSi2O7:Eu2+ was synthesized by “Amorphous Metal Complex” method using water soluble silicon compound. Eu2+ doped NaBaScSi2O7 exhibited a broad green emission band centered between 500 and 510 nm. The high luminescence intensity of the as-synthesized phosphors may owe to the synthesis procedure based on Amorphous Metal Complex (AMC) method which helps in the homogeneous distribution of Eu2+ ions in the matrix as well as the double annealing in graphite and H2/N2 reducing atmosphere. Upon excitation at 365 nm, the composition-optimized NaBaScSi2O7:Eu2+ exhibited strong green light peaking at 501 nm with the CIE chromaticity (0.146, 0.375) and a high internal quantum efficiency of about 77%. The thermally stable luminescence properties were also studied. The results indicate NaBaScSi2O7:Eu2+ as an attractive candidate for use as a conversion phosphor for Phosphor Converted White light-emitting diode (pc-WLEDs) applications.
Keywords LEDs, NBS, WSS, AMC method
Field Chemistry
Published In Volume 6, Issue 6, November-December 2024
Published On 2024-11-27
Cite This Synthesis, Characterization and Photoluminescence Studies of near-UV excitable green-emitting NaBaScSi2O7: Eu2+ phosphor with high Internal Quantum Efficiency and Remarkable Thermal Stability - Vinita Chouhan, Nidhi Malviya, Nazish Khan, Shilpi Rawat - IJFMR Volume 6, Issue 6, November-December 2024. DOI 10.36948/ijfmr.2024.v06i06.29376
DOI https://doi.org/10.36948/ijfmr.2024.v06i06.29376
Short DOI https://doi.org/g8r8k7
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