This article is cited in 2 papers

Optical properties

Tuning emission spectrum of KSrPO$_4$:Eu$^{2+}$ phosphor by co-doping with Y$^{3+}$

X. Geng^a, L. Wang^a, Q. Shi^a, K. V. Ivanovskikh^b, H. Guo^a, C. Cui^a, P. Huang<sup>a

a</sup> Taiyuan University of Technology
^b Department of Experimental Physics, Ural Federal University, Ekaterinburg, 620002 Russia

Abstract: A series of co-doped KSrPO$_4$:Eu$^{2+}$ , Y$^{3+}$ phosphors have been prepared through a high-temperature solid-state reaction at various temperatures. Luminescence spectroscopic characterization allowed to demonstrate that emission spectrum of original KSrPO$_4$:Eu$^{2+}$ phosphor that is typically dominated by Eu$^{2+}4f^65d^1\to4f^7$ emission can be significantly modified by co-doping with Y$^{3+}$ ions, which results in appearance of a broad defect emission. The latter makes the phosphor potential for WLED application. The Y$^{3+}$ co-doping related defect emission was found to get enhanced with the increase of Y$^{3+}$ content and synthesis temperature. The nature and peculiarities of the new defect emission are discussed.

Keywords: phosphors, solid-state reaction, defect emission, KSrPO$_4$:Eu$^{2+}$, Eu$^{2+}5d-4f$ emission.

Language: English

 English version: Physics of the Solid State, 2021, 63:6, 832–838