Low-Voltage Cathodoluminescence Properties of the Y[sub 2]O[sub 2]S:Eu Red Light Emitting Phosphor Screen in Field-Emission Environments

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 and characteristics of phosphors, including brightness and wavelength data, are presented and discussed. The red emission brightness for the phosphor screens can be significantly improved by adjustment of the Eu additions, which decrease the 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 phosphor screens, it is found that brightness for phosphor screens could be obtained up to with chromaticity of and and the Eu dopant concentration is suggested to be in the range 6-7.5 wt %. © 2002 The Electrochemical Society. All rights reserved.