Y 2 O 2 S:Eu phosphors doped with different concentrations of Eu were fabricated by a high-temperature flux fusion method. For applications in field emission displays, phosphor powders were electrophoretically deposited on an indium-tin oxide coated glass substrate to form a phosphor screen. Cathodoluminescence properties of phosphor screens were examined at a low excitation voltage of 5 kV in a high-vacuum chamber (5 ϫ 10 Ϫ8 Torr), and characteristics of Y 2 O 2 S:Eu phosphors, including brightness and wavelength data, are presented and discussed. The red emission brightness for the Y 2 O 2 S:Eu phosphor screens can be significantly improved by adjustment of the Eu additions, which decrease the x coordinate slightly, while having no significant influence on the color performance. Considering the effects of Eu concentrations on red light emission spectra and brightness for Y 2 O 2 S:Eu phosphor screens, it is found that brightness for Y 2 O 2 S:Eu phosphor screens could be obtained up to 120 cd/m 2 with chromaticity of x ϭ 0.63 and y ϭ 0.36, and the Eu dopant concentration is suggested to be in the range 6-7.5 wt %.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.