Вышедшие номера
Tuning Emission Spectrum of KSrPO4 : Eu2+ Phosphor by Co-doping with Y3+
Geng X.1, Wang L.1, Shi Q.1, Ivanovskikh K.V.2, Guo H.1, Cui C.1, Huang P.1
1College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, China
2Department of Experimental Physics, Ural Federal University, Ekaterinburg, Russia
Email: wanglei_keke@163.com
Поступила в редакцию: 3 февраля 2021 г.
Выставление онлайн: 14 марта 2021 г.

A series of co-doped KSrPO4 : Eu2+, Y3+ 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 KSrPO4 : Eu2+ phosphor that is typically dominated by Eu2+ 4f65d1 -> 4f7 emission can be significantly modified by co-doping with Y3+ ions, which results in appearance of a broad defect emission. The latter makes the phosphor potential for WLED application. The Y3+ co-doping related defect emission was found to get enhanced with the increase of Y3+ content and synthesis temperature. The nature and peculiarities of the new defect emission are discussed. Keywords: phosphors, solid-state reaction, defect emission, KSrPO4 : Eu2+, Eu2+ 5d-4f emission.

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