Vikas Mishra, Sudhakar Singh, Vikas Dubey, Dhirendra Singh Kshatri, Pragati Patharia, Neha Dubey, M. C. Rao
{"title":"Synthesis, Structural, and Photoluminescence Studies of Tb3+ Activated Y2SiO5 Phosphor for Display Devices","authors":"Vikas Mishra, Sudhakar Singh, Vikas Dubey, Dhirendra Singh Kshatri, Pragati Patharia, Neha Dubey, M. C. Rao","doi":"10.1007/s10812-024-01701-3","DOIUrl":null,"url":null,"abstract":"<p>The synthesis and luminescence analysis of Tb<sup>3+</sup>-activated phosphors were reported. Y<sub>2</sub>SiO<sub>5</sub> phosphors were synthesized by a modified solid-state reaction method with a variable doping concentration of Tb<sup>3+</sup> ion (0.5–2.5 mol.%). As synthesized, the phosphors were characterized by X-ray diffraction (XRD) analysis. The XRD pattern confirmed the monoclinic structure of the prepared phosphor. Scanning electron microscopy and High-Resolution Transmission Electron Microscopy (HRTEM) studies revealed nearly uniform particle size distribution in the prepared phosphors. The photoluminescence excitation spectra of the Y<sub>2</sub>SiO<sub>5</sub>:Tb<sup>3+</sup> (0.5–2.5 mol.%) phosphor displayed one broad, intense peak at 258–277 nm. When excited at the 258 nm wavelength, the phosphors showed emission peaks at 553 nm (<sup>5</sup><i>D</i><sub>4</sub> → <sup>7</sup><i>F</i><sub>5</sub>), 544 nm (<sup>5</sup><i>D</i><sub>4</sub> → <sup>7</sup><i>F</i><sub>5</sub>) and 489 nm (<sup>5</sup><i>D</i><sub>4</sub> → <sup>7</sup><i>F</i><sub>6</sub>). The 1931 CIE (<i>x</i>,<i>y</i>) chromaticity coordinates showed the distribution of the spectral region calculated from the photoluminescence emission spectra. The values of <i>x</i> = 0.25 and <i>y</i> = 0.46 were very close to light green emission. Therefore, the prepared phosphor is very useful for light-emitting diode (green component) applications.</p>","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Spectroscopy","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10812-024-01701-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"SPECTROSCOPY","Score":null,"Total":0}
引用次数: 0
Abstract
The synthesis and luminescence analysis of Tb3+-activated phosphors were reported. Y2SiO5 phosphors were synthesized by a modified solid-state reaction method with a variable doping concentration of Tb3+ ion (0.5–2.5 mol.%). As synthesized, the phosphors were characterized by X-ray diffraction (XRD) analysis. The XRD pattern confirmed the monoclinic structure of the prepared phosphor. Scanning electron microscopy and High-Resolution Transmission Electron Microscopy (HRTEM) studies revealed nearly uniform particle size distribution in the prepared phosphors. The photoluminescence excitation spectra of the Y2SiO5:Tb3+ (0.5–2.5 mol.%) phosphor displayed one broad, intense peak at 258–277 nm. When excited at the 258 nm wavelength, the phosphors showed emission peaks at 553 nm (5D4 → 7F5), 544 nm (5D4 → 7F5) and 489 nm (5D4 → 7F6). The 1931 CIE (x,y) chromaticity coordinates showed the distribution of the spectral region calculated from the photoluminescence emission spectra. The values of x = 0.25 and y = 0.46 were very close to light green emission. Therefore, the prepared phosphor is very useful for light-emitting diode (green component) applications.
期刊介绍:
Journal of Applied Spectroscopy reports on many key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers focus on the theory of lasers, as well as the tremendous potential for the practical applications of lasers in numerous fields and industries.