Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphor
Phosphate-based low-cost luminescent materials are promising light sources. In the present work Ti3+ doped K2Ba3(P2O7)2 nanophosphor nanopowder is prepared by novel solid-state reaction technique. X-ray diffraction, SEM with EDS, Raman, FT-IR, Optical absorption, Electron Paramagnetic Resonance (EPR...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
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| Series: | Next Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949822825000085 |
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| Summary: | Phosphate-based low-cost luminescent materials are promising light sources. In the present work Ti3+ doped K2Ba3(P2O7)2 nanophosphor nanopowder is prepared by novel solid-state reaction technique. X-ray diffraction, SEM with EDS, Raman, FT-IR, Optical absorption, Electron Paramagnetic Resonance (EPR) and Photoluminescence (PL) are carried out and characterized. Crystallinity, crystal structure and average crystallite size are analyzed from X-ray diffraction. The crystallite structure is known to be orthorhombic and the space group is Pmn21. SEM micrographs show agglomerated irregular stone-like structures. Elemental analysis of the prepared nanophosphor is evaluated using EDS analysis and the compositions of K, O, P, Ba and Ti are found. Raman and FT-IR spectra exhibited different fundamental modes of vibrations of phosphate ions and functional groups. From optical absorption, crystal field (Dq) and tetragonal (Ds, Dt) parameters are calculated as 838, −1542 and 1469 cm−1 respectively. The optical and EPR studies confirm that Ti3+ ions are occupied in host lattice by tetragonal compression with distorted octahedral site symmetry. PL studies reveal the color to be reddish-orange, from the CIE diagram and the sample is efficient to be used for interior lighting sources according to the observed CCT and CRI values of 2924 K and 89 % respectively. |
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| ISSN: | 2949-8228 |