Generation of bright white-light by energy-transfer strategy in Ca19Zn2(PO4)14:Ce3+, Tb3+, Mn2+ phosphors

Single-phase Ca19Zn2(PO4)14:Ce3+,Tb3+,Mn2+ phosphors have been prepared by a high temperature solid-state reaction method. X-ray diffraction (XRD), scanning electric microscopy (SEM), and photoluminescence (PL) spectra were utilized to characterize thephosphors. The optimal concentration of Ce3+ ion...

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Bibliographic Details
Published inJournal of luminescence Vol. 206; pp. 244 - 249
Main Authors Guo, Bin, Zhang, Zhi-Wei, Jiang, Da-Guo, Li, Yu-Nong, Sun, Xin-Yuan
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2019
Subjects
Energy transfer
Photoluminescence
Single-phase Ca19Zn2(PO4)14:Ce3+,Tb3+,Mn2+ phosphors
White-light LEDs
White-light LEDs
Single-phase Ca19Zn2(PO4)14:Ce3+,Tb3+,Mn2+ phosphors
Energy transfer
Photoluminescence
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Summary:Single-phase Ca19Zn2(PO4)14:Ce3+,Tb3+,Mn2+ phosphors have been prepared by a high temperature solid-state reaction method. X-ray diffraction (XRD), scanning electric microscopy (SEM), and photoluminescence (PL) spectra were utilized to characterize thephosphors. The optimal concentration of Ce3+ ions in Ca19Zn2(PO4)14:Ce3+ phosphors is found to be x = 0.05. The energy transfer process from Ce3+ to Tb3+ is determined to the dipole–dipole interaction mechanism. The emissive colors of Ca19Zn2(PO4)14:Ce3+,Tb3+,Mn2+ phosphors can be effectively realized by energy transfer strategy. The bright white-light emission are successfully observed by adjusting the individual concentrations of Ce3+, Tb3+ and Mn2+ ions in Ca19Zn2(PO4)14 phosphors excited by UV light. The obtained results suggest the presented Ca19Zn2(PO4)14:Ce3+,Tb3+,Mn2+ phosphors can be potentially a candidate for single-phase white-light phosphor for UV-pumped sources.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2018.10.030