A novel bluish green-emitting RbBaScSi3O9 : Eu2+ phosphor for white LEDs
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A novel bluish green-emitting silicate phosphor, RbBaScSi3O9 : Eu2+, was synthesized by a conventional solid state reaction method. The RbBaScSi3O9 : Eu2+ phosphor can be excited by a near-UV and blue light irradiation and presents a bluish green band centered at 500 nm due to the allowed transition from 4f6 5d1 to 4f7 of Eu2+. The maximum emission peak intensity was obtained at the composition of RbBaScSi3O9 : 10 mol%Eu2+, and the emission intensity was 13% compared with that of the commercial YAG phosphor.
Abstract
A novel bluish green-emitting silicate phosphor, RbBaScSi3O9 : Eu2+, was synthesized by a conventional solid state reaction method. The RbBaScSi3O9 : Eu2+ phosphor can be excited by a near-UV and blue light irradiation and presents a bluish green band centered at 500 nm due to the allowed transition from 4f6 5d1 to 4f7 of Eu2+. The maximum emission peak intensity was obtained at the composition of RbBaScSi3O9 : 10 mol%Eu2+, and the emission intensity was 13% compared with that of the commercial YAG phosphor.
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