Novelblue-emittingphosphorSr2.979Eu0.021Al10xBxSiO20 (x = 0, 0.25,0.5,0.75 and1) forPDPapplications

Abstract

A series of blue-emitting phosphor Sr3-xEuxAl10SiO20 (x = 0–0.025,insteps of 0.0025)have been synthesized and the emission intensity is found to be maximum for x=0.02. The effect of boron substitution in the Al site in Sr3Al10SiO20:Eu2+ phosphor has been investigated to improve the blue emission of Eu2+. A series of boron-substituted compositions have been made Sr2.979Eu0.021Al10-xBxSiO20 (x = 0, 0.25,0.5,0.75 and 1)and studied the is photoluminescence(PL)property under UV and VUV excitation.The X-ray diffraction patterns of Sr2.979Eu0.021Al10-xBxSiO20 (x = 0, 0.25,0.5,0.75 and 1)show single phase formation and all the compositions crystallize in monoclinic structure with space group C2/m.Blue emission(due to Eu2+ ion) has been found in all compositions and the emission intensity is found to be maximum for x = 0.25 and it is ~2 times higher than that of x = 0 composition(PLintensity 62%vs.commercial BAM).Hence,this phosphor could be possible potential candidate for blue light- emitting phosphor for plasmadisplaypanel(PDP) applications.