Synthesis and luminescent properties of CaLa2ZnO5:Ln (Ln:Tm3+ or Er3+) phosphors

Sk Khaja Hussain; G. Seeta Rama Raju; Jae Su Yu

doi:10.1016/j.ceramint.2015.07.106

Synthesis and luminescent properties of CaLa₂ZnO₅:Ln (Ln:Tm³⁺ or Er³⁺) phosphors

Sk Khaja Hussain, G. Seeta Rama Raju, Jae Su Yu

Department of Energy and Materials Engineering

Kyung Hee University

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

17 Scopus citations

Abstract

Tm³⁺ or Er³⁺ ions individually doped CaLa₂ZnO₅ (CLZO) phosphors were synthesized by a citrate sol-gel method. The phase formation and morphological properties of these phosphors were analyzed by X-ray powder diffraction patterns and scanning electron microscope images, respectively. Under ultraviolet (UV) or near UV light excitations, the luminescence properties of these phosphors were studied as a function of Tm³⁺ or Er³⁺ ion concentration. Likewise, cathodoluminescence properties were measured as a function of accelerating voltage and filament current. The CLZO:Tm³⁺ phosphor revealed the intense blue emission due to the ¹D₂→³F₄ electronic transition and the CLZO:Er³⁺ phosphor exhibited the green emission due to the ⁴S_3/2→⁴I_15/2 electronic transition. The decay curves of these phosphors were well fitted to a single exponential function. The chromaticity coordinates were calculated for the synthesized CLZO:Tm³⁺ and CLZO:Er³⁺ phosphors.

Original language	English
Pages (from-to)	13264-13270
Number of pages	7
Journal	Ceramics International
Volume	41
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2015.07.106
State	Published - 19 Jun 2015

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title = "Synthesis and luminescent properties of CaLa2ZnO5:Ln (Ln:Tm3+ or Er3+) phosphors",

abstract = "Tm3+ or Er3+ ions individually doped CaLa2ZnO5 (CLZO) phosphors were synthesized by a citrate sol-gel method. The phase formation and morphological properties of these phosphors were analyzed by X-ray powder diffraction patterns and scanning electron microscope images, respectively. Under ultraviolet (UV) or near UV light excitations, the luminescence properties of these phosphors were studied as a function of Tm3+ or Er3+ ion concentration. Likewise, cathodoluminescence properties were measured as a function of accelerating voltage and filament current. The CLZO:Tm3+ phosphor revealed the intense blue emission due to the 1D2→3F4 electronic transition and the CLZO:Er3+ phosphor exhibited the green emission due to the 4S3/2→4I15/2 electronic transition. The decay curves of these phosphors were well fitted to a single exponential function. The chromaticity coordinates were calculated for the synthesized CLZO:Tm3+ and CLZO:Er3+ phosphors.",

author = "Hussain, {Sk Khaja} and Raju, {G. Seeta Rama} and {Su Yu}, Jae",

year = "2015",

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T1 - Synthesis and luminescent properties of CaLa2ZnO5:Ln (Ln:Tm3+ or Er3+) phosphors

AU - Hussain, Sk Khaja

AU - Raju, G. Seeta Rama

AU - Su Yu, Jae

PY - 2015/6/19

Y1 - 2015/6/19

N2 - Tm3+ or Er3+ ions individually doped CaLa2ZnO5 (CLZO) phosphors were synthesized by a citrate sol-gel method. The phase formation and morphological properties of these phosphors were analyzed by X-ray powder diffraction patterns and scanning electron microscope images, respectively. Under ultraviolet (UV) or near UV light excitations, the luminescence properties of these phosphors were studied as a function of Tm3+ or Er3+ ion concentration. Likewise, cathodoluminescence properties were measured as a function of accelerating voltage and filament current. The CLZO:Tm3+ phosphor revealed the intense blue emission due to the 1D2→3F4 electronic transition and the CLZO:Er3+ phosphor exhibited the green emission due to the 4S3/2→4I15/2 electronic transition. The decay curves of these phosphors were well fitted to a single exponential function. The chromaticity coordinates were calculated for the synthesized CLZO:Tm3+ and CLZO:Er3+ phosphors.

AB - Tm3+ or Er3+ ions individually doped CaLa2ZnO5 (CLZO) phosphors were synthesized by a citrate sol-gel method. The phase formation and morphological properties of these phosphors were analyzed by X-ray powder diffraction patterns and scanning electron microscope images, respectively. Under ultraviolet (UV) or near UV light excitations, the luminescence properties of these phosphors were studied as a function of Tm3+ or Er3+ ion concentration. Likewise, cathodoluminescence properties were measured as a function of accelerating voltage and filament current. The CLZO:Tm3+ phosphor revealed the intense blue emission due to the 1D2→3F4 electronic transition and the CLZO:Er3+ phosphor exhibited the green emission due to the 4S3/2→4I15/2 electronic transition. The decay curves of these phosphors were well fitted to a single exponential function. The chromaticity coordinates were calculated for the synthesized CLZO:Tm3+ and CLZO:Er3+ phosphors.

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U2 - 10.1016/j.ceramint.2015.07.106

DO - 10.1016/j.ceramint.2015.07.106

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SN - 0272-8842

VL - 41

SP - 13264

EP - 13270

JO - Ceramics International

JF - Ceramics International

IS - 10

ER -

Synthesis and luminescent properties of CaLa₂ZnO₅:Ln (Ln:Tm³⁺ or Er³⁺) phosphors

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