Selecting a Red Point Using CaS:Eu~(2+) and SrS:Eu~(2+) Phosphors on Screens and One Blue LED

摘要

Screen printing inks containing various CaS:Eu~(2+):SrS:Eu~(2+) ratios were prepared. The phosphors were printed on screens which were excited by blue LED light to produce red emission. The color point of the red light can be fine tuned by varying the CaS:Eu~(2+):SrS:Eu~(2+) ratios, printed phosphor thickness, particle size and morphology.