White EL of SrSe:Ce/ZnS:Mn multilayered thin films and RGB coloration by color filters
1994 Volume 18 Issue 35 Pages 43-48
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1994 Volume 18 Issue 35 Pages 43-48
White light emitting SrSe:Ce/ZnS:Mn multilayered thin-film EL devices, in which SrSe:Ce shows blue emission with good chromaticity, have been prepared in view of the development of full color EL display by using R, G and B color filters. The SrSe:Ce and ZnS:Mn films are prepared by multi-source deposition and electronb eam evaporation techniques, respectively. Lunrinance of white EL of about 150cd/m^2 was obtained by annealing the films at 400℃ for 1 hour after the deposition of both SrSe:Ce and ZnS:Mn films. R, G and B emissions were obtained by filtering through R, G and B color filters. The device showed R and G emissions with nealy the same chromaticity as those of CRT, however, the chromaticity of blue emission should be improved, althogh it ha much better CIE coordinates than that of the SrS:Ce thin-film EL device.
