Photoluminescence and thermoluminescence properties of Tb3+doped K3Gd(PO4)2nanophosphor

Palvi Gupta; A. K. Bedyal; Vinay Kumar; Y. Khajuria; S. P. Lochab; S. S. Pitale; O. M. Ntwaeaborwa; H. C. Swart

doi:10.1016/j.materresbull.2014.09.001

Photoluminescence and thermoluminescence properties of Tb³⁺doped K₃Gd(PO₄)₂nanophosphor

Palvi Gupta, A. K. Bedyal, Vinay Kumar, Y. Khajuria, S. P. Lochab, S. S. Pitale, O. M. Ntwaeaborwa, H. C. Swart

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Tb³⁺doped nanoparticulate K₃Gd(PO₄)₂phosphor was prepared by combustion method using urea as a fuel. The structure, optical and luminescent properties of the phosphor were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), photoluminescence spectroscopy (PL), and thermoluminescence (TL) spectroscopy. In undoped K₃Gd(PO₄)₂, the excitation and emission peaks at 273 nm and 323 nm belongs to the ⁸S_7/2→ ⁶I_{J(J = 7/2)}and ⁶P_{J(J = 7/2)}→ ⁸S_7/2transitions of Gd³⁺while green emission was observed in the Tb³⁺doped K₃Gd(PO₄)₂. TL study was carried out after exposing the samples to γ-radiations (0.1-5 kGy) in the K₃Gd(PO₄)₂:Tb³⁺(1.5 mol%). The calculated kinetic parameters were compared with different methods. The band gap of the phosphor was estimated as 5.80 eV. The green shade of the Tb³⁺ion with the CIE coordinates (x, y) as (0.29, 0.54) was in good agreement with the well known green phosphors.

Original language	English
Pages (from-to)	401-411
Number of pages	11
Journal	Materials Research Bulletin
Volume	60
DOIs	https://doi.org/10.1016/j.materresbull.2014.09.001
Publication status	Published - Dec 2014
Externally published	Yes

Keywords

A. Optical materials
B. Luminescence
C. X-ray diffraction
D. Phosphors

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.materresbull.2014.09.001

Cite this

@article{708cf4a2660b4d879828ea6d15c6d9a3,

title = "Photoluminescence and thermoluminescence properties of Tb3+doped K3Gd(PO4)2nanophosphor",

abstract = "Tb3+doped nanoparticulate K3Gd(PO4)2phosphor was prepared by combustion method using urea as a fuel. The structure, optical and luminescent properties of the phosphor were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), photoluminescence spectroscopy (PL), and thermoluminescence (TL) spectroscopy. In undoped K3Gd(PO4)2, the excitation and emission peaks at 273 nm and 323 nm belongs to the 8S7/2→ 6IJ(J = 7/2)and 6PJ(J = 7/2)→ 8S7/2transitions of Gd3+while green emission was observed in the Tb3+doped K3Gd(PO4)2. TL study was carried out after exposing the samples to γ-radiations (0.1-5 kGy) in the K3Gd(PO4)2:Tb3+(1.5 mol%). The calculated kinetic parameters were compared with different methods. The band gap of the phosphor was estimated as 5.80 eV. The green shade of the Tb3+ion with the CIE coordinates (x, y) as (0.29, 0.54) was in good agreement with the well known green phosphors.",

keywords = "A. Optical materials, B. Luminescence, C. X-ray diffraction, D. Phosphors",

author = "Palvi Gupta and Bedyal, {A. K.} and Vinay Kumar and Y. Khajuria and Lochab, {S. P.} and Pitale, {S. S.} and Ntwaeaborwa, {O. M.} and Swart, {H. C.}",

year = "2014",

month = dec,

doi = "10.1016/j.materresbull.2014.09.001",

language = "English",

volume = "60",

pages = "401--411",

journal = "Materials Research Bulletin",

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publisher = "Elsevier Ltd.",

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T1 - Photoluminescence and thermoluminescence properties of Tb3+doped K3Gd(PO4)2nanophosphor

AU - Gupta, Palvi

AU - Bedyal, A. K.

AU - Kumar, Vinay

AU - Khajuria, Y.

AU - Lochab, S. P.

AU - Pitale, S. S.

AU - Ntwaeaborwa, O. M.

AU - Swart, H. C.

PY - 2014/12

Y1 - 2014/12

N2 - Tb3+doped nanoparticulate K3Gd(PO4)2phosphor was prepared by combustion method using urea as a fuel. The structure, optical and luminescent properties of the phosphor were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), photoluminescence spectroscopy (PL), and thermoluminescence (TL) spectroscopy. In undoped K3Gd(PO4)2, the excitation and emission peaks at 273 nm and 323 nm belongs to the 8S7/2→ 6IJ(J = 7/2)and 6PJ(J = 7/2)→ 8S7/2transitions of Gd3+while green emission was observed in the Tb3+doped K3Gd(PO4)2. TL study was carried out after exposing the samples to γ-radiations (0.1-5 kGy) in the K3Gd(PO4)2:Tb3+(1.5 mol%). The calculated kinetic parameters were compared with different methods. The band gap of the phosphor was estimated as 5.80 eV. The green shade of the Tb3+ion with the CIE coordinates (x, y) as (0.29, 0.54) was in good agreement with the well known green phosphors.

AB - Tb3+doped nanoparticulate K3Gd(PO4)2phosphor was prepared by combustion method using urea as a fuel. The structure, optical and luminescent properties of the phosphor were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), photoluminescence spectroscopy (PL), and thermoluminescence (TL) spectroscopy. In undoped K3Gd(PO4)2, the excitation and emission peaks at 273 nm and 323 nm belongs to the 8S7/2→ 6IJ(J = 7/2)and 6PJ(J = 7/2)→ 8S7/2transitions of Gd3+while green emission was observed in the Tb3+doped K3Gd(PO4)2. TL study was carried out after exposing the samples to γ-radiations (0.1-5 kGy) in the K3Gd(PO4)2:Tb3+(1.5 mol%). The calculated kinetic parameters were compared with different methods. The band gap of the phosphor was estimated as 5.80 eV. The green shade of the Tb3+ion with the CIE coordinates (x, y) as (0.29, 0.54) was in good agreement with the well known green phosphors.

KW - A. Optical materials

KW - B. Luminescence

KW - C. X-ray diffraction

KW - D. Phosphors

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