GREEN LIGHT-EMITTING (Y, GD, TB)BO3 PHOSPHOR FOR PDP IMPROVED IN LUMINANCE BY USING LANTHANUM INSTEAD OF YTTRIUM

摘要

PURPOSE: Provided is a green light-emitting phosphor for a plasma display panel which is improved in the luminance at VUV excitation state of 172 nm by using a small amount of lanthanum instead of yttrium. CONSTITUTION: The phosphor is represented by (Y_(1-x-y-z) Gd_x Tb_y La_z) BO3, wherein 0.01=x=0.4, 0.01=y=0.1, and 0z=0.2. Preferably 0.2=x=0.3, 0.03=y=0.07, and 0.05=z=0.15.