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Information × Registration Number 0214U005711, 0109U003422 , R & D reports Title Development of producing technology of effective broad band phosphors for white light emitting diodes popup.stage_title Head Efryushina N.P., Registration Date 17-02-2014 Organization A.V.Bogatsky Physico-Chemical Institute of the National Academy of Sciences of Ukraine popup.description2 For develop phosphors for energy-saving light-emitting diodes calcium-scandium silicon garnets Ca3(1-x)Ce3xSc2Si3O12 (x= 0.001-0.03) were obtained by solid state reactions. It was shown that the emission spectrum of Ca3(1-x)Ce3xSc2Si3O12 is a superposition of two broad bands with maxima at 507 и 550 nm, which are due to 5d ? 4f transitions of Се3+ ions. The optimal Се3+ concentration equals to 1.0-2.0 at.%. The influence of different fluxes on the luminescence intensity of Ca3(1-х)Ce3хSc2Si3O12 (х= 0.01) was also studied. It was found that the use of NaF allows one to increase the luminescence intensity by 9-23%. Based on the results obtained the reglament for synthesis of material with composition Ca3(1-х-y)Ce3хNa3ySc2Si3O12 (х= y= 0.01), which is suitable for its commercial production, was developed. Experimental samples of this phosphor with average particle size of ~10 µm were also synthesized Product Description popup.authors І.В. Березовська І.В. Починок І.П. Ковалевська В.П. Доценко Е.О. Жихарєва З.Д. Клименко Н.П. Єфрюшина О.В. Зубар О.М. Дехтяренко popup.nrat_date 2020-04-02 Close