Photoluminescent and Thermoluminescent Studies of Dy{sup 3+} and Eu{sup 3+} Doped Y{sub 2}O{sub 3} Phosphors

Journal Article · Mon Jan 15 04:00:00 EST 2018 · Journal of Fluorescence (Online)

DOI:https://doi.org/10.1007/S10895-018-2208-5· OSTI ID:22795667

Verma, Tarkeshwari; Agrawal, Sadhana ^[1]

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1. National Institute of Technology Raipur, Department of Physics (India)

Eu{sup 3+} doped and Dy{sup 3+} codoped yttrium oxide (Y{sub 2}O{sub 3}) phosphors have been prepared using solid-state reaction technique (SSR). The prepared phosphors were characterized by X-ray diffractometer (XRD), energy dispersive X-ray (EDX) spectroscopy, scanning electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR) techniques. Photoluminescence (PL) and Thermoluminescence (TL) properties were studied in detail. PL emission spectra were recorded for prepared phosphors under excitation wavelength 254 nm, which show a high intense peak at 613 nm for Y{sub 2}O{sub 3}:Dy{sup 3+}, Eu{sup 3+} (1:1.5 mol %) phosphor. The correlated color temperature (CCT) and CIE analysis have been performed for the synthesized phosphors. TL glow curves were recorded for Eu{sup 3+}doped and Dy{sup 3+}codoped phosphors to study the heating rate effect and dose response. The kinetic parameters were calculated using peak shape method for UV and γ exposures through computerized glow curve deconvolution (CGCD) technique. The phosphors show second order kinetics and activation energies varying from 5.823 × 10{sup − 1} to 18.608 × 10{sup − 1} eV.

• OSTI ID: 22795667
• Journal Information: Journal of Fluorescence (Online), Journal Name: Journal of Fluorescence (Online) Journal Issue: 1 Vol. 28; ISSN 1573-4994
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTIVATION ENERGY
COLOR
DOPED MATERIALS
DYSPROSIUM IONS
EMISSION SPECTRA
EUROPIUM IONS
FOURIER TRANSFORM SPECTROMETERS
FOURIER TRANSFORMATION
INFRARED SPECTRA
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
THERMOLUMINESCENCE
X RADIATION
X-RAY DIFFRACTION
X-RAY DIFFRACTOMETERS
YTTRIUM OXIDES