The scandium based silicate phosphors with the compositions RbBa(1-x)EuxScSi3O9 have been synthesized by an advanced solution based method employing an water soluble silicon compound. The high quantum efficiency of the phosphors owe to the synthesis methodology heat treatment at H2 /N2 atm. To demonstrate its potential application, we fabricated a warm white light-emitting diode LED using the RbBaScSi3O9 :Eu2+ phosphor. These Scandium based silicate phosphor can be excited by a near-UV and blue light irradiation and give green and bluish green emission. 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 4 f6 5d1 to 4 f7 of Eu2+. RBS Compound which reflects the good color rendering index and color temperature.
