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Luminescence properties and energy transfer of YGa1.5Al1.5(BO3)4:Tb3+,Eu3+ as a multi-colour emitting phosphor for WLEDs

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Abstract

A series of YGa1.5Al1.5(BO3)4:Tb3+,Eu3+ inorganic luminescence materials were successfully synthesized through a high-temperature solid-state reaction. Powder X-ray diffraction was used to confirm the crystal structure and phase purity of the obtained samples. Then, scanning electron microscopy elemental mapping was taken to characterize the distribution of the doped ions. Detailed investigations on the photoluminescence emission and excitation spectra and fluorescence lifetime revealed that trivalent europium ions can be well sensitized by trivalent terbium ions under near-ultraviolet excitation. Additionally, the energy transfer from Tb3+ to Eu3+ can be controlled to realize multi-colour emissions covering the green to red visible region. Concentration quenching does not take place in Tb3+ or Eu3+ singularly-doped YGAB due to its structure isolation. Therefore, satisfactory luminescence properties related to the structure specificity make these phosphors suitable for WLEDs.

Graphical abstract: Luminescence properties and energy transfer of YGa1.5Al1.5(BO3)4:Tb3+,Eu3+ as a multi-colour emitting phosphor for WLEDs

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Publication details

The article was received on 26 Mar 2017, accepted on 30 May 2017 and first published on 31 May 2017


Article type: Paper
DOI: 10.1039/C7TC01285C
Citation: J. Mater. Chem. C, 2017, Advance Article
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    Luminescence properties and energy transfer of YGa1.5Al1.5(BO3)4:Tb3+,Eu3+ as a multi-colour emitting phosphor for WLEDs

    J. Li, Z. Zhang, X. Li, Y. Xu, Y. Ai, J. Yan, J. Shi and M. Wu, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC01285C

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