Enhancement of the luminescence properties of Sr3(PO4)2:Dy3+,Li+ white‐light‐emitting phosphors by charge compensator Li+ co‐doping

• Published in: Luminescence (Chichester, England) Vol. 32; no. 8; pp. 1593 - 1596
• Main Authors: Li, Yuhang, Dai, Siyi, Zhang, Wentao, Zhang, Peicong, Qiu, Kehui
• Format: Journal Article
• Language: English
• Published: Bognor Regis Wiley Subscription Services, Inc 01.12.2017
• Subjects: charge compensation; Dysprosium; Emission; High temperature; Light; Light emitting diodes; Luminescence; Optical properties; Organic light emitting diodes; Phosphates; Phosphors; photoluminescence; Properties; rare earth ions doping; Sr3(PO4)2; Ultraviolet radiation; White light; white‐emitting
• ISSN: 1522-7235; 1522-7243
• DOI: 10.1002/bio.3387

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.