High-temperature crystalline α′H- and α-Ca2SiO4:Eu2+ phosphors stabilized at room temperature by incorporating phosphorus ions

Jingjing Chen, Yanfang Yang, Jiao Xu, Zhiyong Mao, Dajian Wang, Lijian Bie, Bradley D. Fahlman

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3 Scopus citations

Abstract

In this work, high-temperature crystalline α′H- and α-Ca2SiO4:Eu2+ phosphors stabilized at room temperature are synthesized by incorporating a suitable amount of phosphorus ions. The crystalline structures and the influence of phosphorus ions on the crystalline phases as well as the photoluminescent properties for phosphorus stabilized α′H- and α-Ca2SiO4:Eu2+ phosphors are investigated in detail. The results indicate that the α′H- and α-Ca2SiO4 high-temperature crystalline phases can be quenched at room temperature with incorporation of 12% and 42% phosphorus ions (replacing Si ions), respectively, shielding the stability effect of Eu2+ ions on the β-form (low Eu2+ concentration) and α′L-form (high Eu2+ concentration). Tunable emissions from green to orange-red light are observed with the increase of the Eu2+ doping concentration in both of α′H-Ca2Si0.88P0.12O4:Eu2+ and α-Ca2Si0.58P0.42O4:Eu2+ phosphors, indicating their promising prospect in applications of LED lighting.

Original languageEnglish
Pages (from-to)83776-83782
Number of pages7
JournalRSC Advances
Volume6
Issue number87
DOIs
StatePublished - 2016

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