Journal
LANGMUIR
Volume 17, Issue 22, Pages 7145-7149Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la0105883
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The preparation of spherical phosphor europium-doped yttrium oxide (Y2O3:Eu) particles using a copolymer of N-isopropylacrylamide (NIPAM)] and acrylic acid (AAc) is described. The resulting phosphor particles have smaller particle diameters (<0.1 mum) compared to both commercial Y2O3:Eu phosphors and spherical particles synthesized by the urea precipitation method. Cathodoluminescent (CL) measurements demonstrate that exceptional light output is achieved from the smaller particle diameters than 0.1 mum. The luminescent properties of the phosphors synthesized via the copolymer microgel are shown to be at least comparable to commercial products at lower voltages; however, they offer the distinct advantage of a higher packing density and therefore higher resolution for field emissive displays (FED's) and cathode ray tube (CRT) applications.
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