Energy transfer mechanism from Gd3+ to Sm3+ in K3+Gd(PO4)2:Sm3+ phosphor

Palvi Gupta; A. K. Bedyal; Vinay Kumar; Y. Khajuria; Vishal Sharma; O. M. Ntwaeaborwa; H. C. Swart

doi:10.1088/2053-1591/2/7/076202

Energy transfer mechanism from Gd³⁺ to Sm³⁺ in K³⁺Gd(PO₄)₂:Sm³⁺ phosphor

Palvi Gupta, A. K. Bedyal, Vinay Kumar, Y. Khajuria, Vishal Sharma, O. M. Ntwaeaborwa, H. C. Swart

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

45 Citations (Scopus)

Abstract

Undoped K³⁺Gd(PO₄)₂ and trivalent samarium (0.5-2.5 mol%) doped K³⁺Gd(PO₄)₂ phosphors were synthesized by the solid-state method. The phase formation, optical and luminescence properties were investigated by x-ray diffraction (XRD), diffuse reflectance (DR) spectroscopy, and photolumines-cence (PL) spectroscopy. The fluorescence decay spectra of the obtained phosphors were also recorded to study the energy transfer from sensitizer (Gd³⁺) to activator (Sm³⁺). Energy transfer effects from sensitizer to activator caused by rare-earth ions were mainly observed in the obtained PL and lifetime spectra. The decay curves of K³⁺Gd(PO₄)₂ phosphor with different Sm³⁺ ions concentrations were found to be non-exponential and the data is well fitted with the Inokuti-Hirayama (I-H) model. The energy transfer parameters such as critical distance for the transfer processes were determined. The Commission Internationale de l'Eclairage (CIE) chromatic coordinates and color-correlated temperature were also determined for the prepared phosphor.

Original language	English
Article number	076202
Journal	Materials Research Express
Volume	2
Issue number	7
DOIs	https://doi.org/10.1088/2053-1591/2/7/076202
Publication status	Published - Jul 2015
Externally published	Yes

Keywords

Energy transfer
Inokuti-Hirayama model
Luminescence
Phosphor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Polymers and Plastics
Metals and Alloys

Access to Document

10.1088/2053-1591/2/7/076202

Cite this

@article{53938598668a4980bc32340dbe9a6278,

title = "Energy transfer mechanism from Gd3+ to Sm3+ in K3+Gd(PO4)2:Sm3+ phosphor",

abstract = "Undoped K3+Gd(PO4)2 and trivalent samarium (0.5-2.5 mol%) doped K3+Gd(PO4)2 phosphors were synthesized by the solid-state method. The phase formation, optical and luminescence properties were investigated by x-ray diffraction (XRD), diffuse reflectance (DR) spectroscopy, and photolumines-cence (PL) spectroscopy. The fluorescence decay spectra of the obtained phosphors were also recorded to study the energy transfer from sensitizer (Gd3+) to activator (Sm3+). Energy transfer effects from sensitizer to activator caused by rare-earth ions were mainly observed in the obtained PL and lifetime spectra. The decay curves of K3+Gd(PO4)2 phosphor with different Sm3+ ions concentrations were found to be non-exponential and the data is well fitted with the Inokuti-Hirayama (I-H) model. The energy transfer parameters such as critical distance for the transfer processes were determined. The Commission Internationale de l'Eclairage (CIE) chromatic coordinates and color-correlated temperature were also determined for the prepared phosphor.",

keywords = "Energy transfer, Inokuti-Hirayama model, Luminescence, Phosphor",

author = "Palvi Gupta and Bedyal, {A. K.} and Vinay Kumar and Y. Khajuria and Vishal Sharma and Ntwaeaborwa, {O. M.} and Swart, {H. C.}",

note = "Publisher Copyright: {\textcopyright} 2015 IOP Publishing Ltd.",

year = "2015",

month = jul,

doi = "10.1088/2053-1591/2/7/076202",

language = "English",

volume = "2",

journal = "Materials Research Express",

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TY - JOUR

T1 - Energy transfer mechanism from Gd3+ to Sm3+ in K3+Gd(PO4)2:Sm3+ phosphor

AU - Gupta, Palvi

AU - Bedyal, A. K.

AU - Kumar, Vinay

AU - Khajuria, Y.

AU - Sharma, Vishal

AU - Ntwaeaborwa, O. M.

AU - Swart, H. C.

PY - 2015/7

Y1 - 2015/7

N2 - Undoped K3+Gd(PO4)2 and trivalent samarium (0.5-2.5 mol%) doped K3+Gd(PO4)2 phosphors were synthesized by the solid-state method. The phase formation, optical and luminescence properties were investigated by x-ray diffraction (XRD), diffuse reflectance (DR) spectroscopy, and photolumines-cence (PL) spectroscopy. The fluorescence decay spectra of the obtained phosphors were also recorded to study the energy transfer from sensitizer (Gd3+) to activator (Sm3+). Energy transfer effects from sensitizer to activator caused by rare-earth ions were mainly observed in the obtained PL and lifetime spectra. The decay curves of K3+Gd(PO4)2 phosphor with different Sm3+ ions concentrations were found to be non-exponential and the data is well fitted with the Inokuti-Hirayama (I-H) model. The energy transfer parameters such as critical distance for the transfer processes were determined. The Commission Internationale de l'Eclairage (CIE) chromatic coordinates and color-correlated temperature were also determined for the prepared phosphor.

AB - Undoped K3+Gd(PO4)2 and trivalent samarium (0.5-2.5 mol%) doped K3+Gd(PO4)2 phosphors were synthesized by the solid-state method. The phase formation, optical and luminescence properties were investigated by x-ray diffraction (XRD), diffuse reflectance (DR) spectroscopy, and photolumines-cence (PL) spectroscopy. The fluorescence decay spectra of the obtained phosphors were also recorded to study the energy transfer from sensitizer (Gd3+) to activator (Sm3+). Energy transfer effects from sensitizer to activator caused by rare-earth ions were mainly observed in the obtained PL and lifetime spectra. The decay curves of K3+Gd(PO4)2 phosphor with different Sm3+ ions concentrations were found to be non-exponential and the data is well fitted with the Inokuti-Hirayama (I-H) model. The energy transfer parameters such as critical distance for the transfer processes were determined. The Commission Internationale de l'Eclairage (CIE) chromatic coordinates and color-correlated temperature were also determined for the prepared phosphor.

KW - Energy transfer

KW - Inokuti-Hirayama model

KW - Luminescence

KW - Phosphor

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