Enhancement of luminescence intensity and increase of emission lifetime in Eu3+-doped 3CdO-Al2O3-3SiO2 amorphous system

Yan Cong; Bin Li; Bingfu Lei; Xiaojun Wang; Chunxu Liu; Junye Liu; Wenlian Li

doi:10.1016/j.jlumin.2007.05.016

Enhancement of luminescence intensity and increase of emission lifetime in Eu³⁺-doped 3CdO-Al₂O₃-3SiO₂ amorphous system

Yan Cong, Bin Li, Bingfu Lei, Xiaojun Wang, Chunxu Liu, Junye Liu, Wenlian Li

Biochemistry, Chemistry, & Physics

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

20 Scopus citations

Abstract

Intense photoluminescence at room temperature was observed in amorphous cadmium aluminum silicate doped with europium prepared by the sol-gel method. The structure of the 3CdO-Al₂O₃-3SiO₂:Eu³⁺ system (CAS:Eu³⁺) has been determined by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The excitation and the emission spectra indicated that the red characteristic emission (611 nm) of CAS:Eu³⁺ under UV excitation due to ⁵D₀→⁷F₂ electric dipole transition is the strongest. Both XRD data and the emission ratio of (⁵D₀→⁷F₂)/(⁵D₀→⁷F₁) reveal that the Eu³⁺ is in a site without inversion symmetry. The maximum photoluminescence intensity has been obtained for 25 mol% concentration of Eu³⁺ in CAS, and the intensity enhancement and lifetime increase of Eu³⁺ with increasing sintering temperature were observed due to the less OH-content in the samples.

Original language	English
Pages (from-to)	105-109
Number of pages	5
Journal	Journal of Luminescence
Volume	128
Issue number	1
DOIs	https://doi.org/10.1016/j.jlumin.2007.05.016
State	Published - Jan 2008

Keywords

Europium
Intensity increasing and lifetime lengthening
OH-content
Sol-gel

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10.1016/j.jlumin.2007.05.016

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title = "Enhancement of luminescence intensity and increase of emission lifetime in Eu3+-doped 3CdO-Al2O3-3SiO2 amorphous system",

abstract = "Intense photoluminescence at room temperature was observed in amorphous cadmium aluminum silicate doped with europium prepared by the sol-gel method. The structure of the 3CdO-Al2O3-3SiO2:Eu3+ system (CAS:Eu3+) has been determined by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The excitation and the emission spectra indicated that the red characteristic emission (611 nm) of CAS:Eu3+ under UV excitation due to 5D0→7F2 electric dipole transition is the strongest. Both XRD data and the emission ratio of (5D0→7F2)/(5D0→7F1) reveal that the Eu3+ is in a site without inversion symmetry. The maximum photoluminescence intensity has been obtained for 25 mol% concentration of Eu3+ in CAS, and the intensity enhancement and lifetime increase of Eu3+ with increasing sintering temperature were observed due to the less OH-content in the samples.",

keywords = "Europium, Intensity increasing and lifetime lengthening, OH-content, Sol-gel",

author = "Yan Cong and Bin Li and Bingfu Lei and Xiaojun Wang and Chunxu Liu and Junye Liu and Wenlian Li",

year = "2008",

month = jan,

doi = "10.1016/j.jlumin.2007.05.016",

language = "English",

volume = "128",

pages = "105--109",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Enhancement of luminescence intensity and increase of emission lifetime in Eu3+-doped 3CdO-Al2O3-3SiO2 amorphous system

AU - Cong, Yan

AU - Li, Bin

AU - Lei, Bingfu

AU - Wang, Xiaojun

AU - Liu, Chunxu

AU - Liu, Junye

AU - Li, Wenlian

PY - 2008/1

Y1 - 2008/1

N2 - Intense photoluminescence at room temperature was observed in amorphous cadmium aluminum silicate doped with europium prepared by the sol-gel method. The structure of the 3CdO-Al2O3-3SiO2:Eu3+ system (CAS:Eu3+) has been determined by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The excitation and the emission spectra indicated that the red characteristic emission (611 nm) of CAS:Eu3+ under UV excitation due to 5D0→7F2 electric dipole transition is the strongest. Both XRD data and the emission ratio of (5D0→7F2)/(5D0→7F1) reveal that the Eu3+ is in a site without inversion symmetry. The maximum photoluminescence intensity has been obtained for 25 mol% concentration of Eu3+ in CAS, and the intensity enhancement and lifetime increase of Eu3+ with increasing sintering temperature were observed due to the less OH-content in the samples.

AB - Intense photoluminescence at room temperature was observed in amorphous cadmium aluminum silicate doped with europium prepared by the sol-gel method. The structure of the 3CdO-Al2O3-3SiO2:Eu3+ system (CAS:Eu3+) has been determined by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The excitation and the emission spectra indicated that the red characteristic emission (611 nm) of CAS:Eu3+ under UV excitation due to 5D0→7F2 electric dipole transition is the strongest. Both XRD data and the emission ratio of (5D0→7F2)/(5D0→7F1) reveal that the Eu3+ is in a site without inversion symmetry. The maximum photoluminescence intensity has been obtained for 25 mol% concentration of Eu3+ in CAS, and the intensity enhancement and lifetime increase of Eu3+ with increasing sintering temperature were observed due to the less OH-content in the samples.

KW - Europium

KW - Intensity increasing and lifetime lengthening

KW - OH-content

KW - Sol-gel

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U2 - 10.1016/j.jlumin.2007.05.016

DO - 10.1016/j.jlumin.2007.05.016

M3 - Article

AN - SCOPUS:34548484091

SN - 0022-2313

VL - 128

SP - 105

EP - 109

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 1

ER -

Enhancement of luminescence intensity and increase of emission lifetime in Eu³⁺-doped 3CdO-Al₂O₃-3SiO₂ amorphous system

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Keywords

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