Enhancement of the luminescence properties of Sr3(PO4)2:Dy3+,Li+ white‐light‐emitting phosphors by charge compensator Li+ co‐doping |
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| Authors: | Yuhang Li Siyi Dai Wentao Zhang Peicong Zhang Kehui Qiu |
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| Institution: | 1. College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, China;2. Institute of Materials Science and Technology, Chengdu University of Technology, Chengdu, China |
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| Abstract: | Sr3(PO4)2:Dy3+,Li+ phosphors were prepared using a simple high temperature solid method for luminescence enhancement. The structures of the as‐prepared samples agreed well with the standard phase of Sr3(PO4)2, even when Dy3+ and Li+ were introduced. Under ultraviolet excitation at 350 nm, the Sr3(PO4)2:Dy3+ sample exhibited two emission peaks at 483 nm and 580 nm, which were due to the 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transitions of Dy3+ ions, respectively. A white light was fabricated using these two emissions from the Sr3(PO4)2:Dy3+ phosphors. The luminescence properties of Sr3(PO4)2:Dy3+,Li+ phosphors, including emission intensity and decay time, were improved remarkably with the addition of Li+ as the charge compensator, which would promote their application in near‐ultraviolet excited white‐light‐emitting diodes. |
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| Keywords: | charge compensation photoluminescence rare earth ions doping Sr3(PO4)2 white‐emitting |
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