A novel white-bluish emitting phosphor of (Ba_0.49Sr_0.49)₂-B₂P₂O₁₀:0.02Eu²⁺ for white LEDs

Abstract

A novel white-bluish emitting phosphor of (Ba_0.49Sr_0.49)₂B₂P₂O₁₀:0.02Eu²⁺ is synthesized by the solid state reaction. (Ba_0.49Sr_0.49)₂B₂P₂O₁₀:0.02Eu²⁺ can be effectively excited by 370 nm ultraviolet (UV) light, and exhibits two emission bands at 430 nm and 522 nm which are attributed to the d-f transitions of the Eu²⁺ ions in two different cation sites in the host lattices. And the chromaticity coordinate of (Ba_0.49Sr_0.49)₂B₂P₂O₁₀:0.02Eu²⁺ phosphor is (0.29, 0.25).

Keywords

Emission Band / Crystal Field / Apply Physic Letter / Optoelectronic Letter / Chromaticity Diagram

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