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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Elsevier
2025-01-01
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| Series: | Next Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949822825000085 |
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| author | Katumalla Josephus Alex Libnah Chopparapu Aswini Nakka Chinna Anjaneyulu Alluru Gopala Krishna Renduchintala Venkata Satya Sai Nagoji Ravikumar |
| author_facet | Katumalla Josephus Alex Libnah Chopparapu Aswini Nakka Chinna Anjaneyulu Alluru Gopala Krishna Renduchintala Venkata Satya Sai Nagoji Ravikumar |
| author_sort | Katumalla Josephus Alex Libnah |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-39b9136381dc4c8bb7eb697f3cd71db6 |
| institution | DOAJ |
| issn | 2949-8228 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Materials |
| spelling | doaj-art-39b9136381dc4c8bb7eb697f3cd71db62025-08-20T03:02:01ZengElsevierNext Materials2949-82282025-01-01610049010.1016/j.nxmate.2025.100490Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphorKatumalla Josephus Alex Libnah0Chopparapu Aswini1Nakka Chinna Anjaneyulu2Alluru Gopala Krishna3Renduchintala Venkata Satya Sai Nagoji Ravikumar4Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, Andhra Pradesh 522510, IndiaDepartment of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, Andhra Pradesh 522510, IndiaDepartment of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, Andhra Pradesh 522510, IndiaDepartment of Mechanical Engineering, JNTUK, Kakinada, Andhra Pradesh 533003, IndiaDepartment of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, Andhra Pradesh 522510, India; Corresponding author.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.http://www.sciencedirect.com/science/article/pii/S2949822825000085K2Ba3(P2O7)2NanopowderInterior lightingTi3+ ionsXRDSEM with EDS |
| spellingShingle | Katumalla Josephus Alex Libnah Chopparapu Aswini Nakka Chinna Anjaneyulu Alluru Gopala Krishna Renduchintala Venkata Satya Sai Nagoji Ravikumar Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphor Next Materials K2Ba3(P2O7)2 Nanopowder Interior lighting Ti3+ ions XRD SEM with EDS |
| title | Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphor |
| title_full | Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphor |
| title_fullStr | Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphor |
| title_full_unstemmed | Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphor |
| title_short | Structural, optical and photoluminescence studies of reddish-orange emitting K2Ba3(P2O7)2:Ti3+ nanophosphor |
| title_sort | structural optical and photoluminescence studies of reddish orange emitting k2ba3 p2o7 2 ti3 nanophosphor |
| topic | K2Ba3(P2O7)2 Nanopowder Interior lighting Ti3+ ions XRD SEM with EDS |
| url | http://www.sciencedirect.com/science/article/pii/S2949822825000085 |
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