A new blue emitting TFEL phosphor : SrS : Cu

A highly efficient new blue emitting electroluminescent (EL) phosphor material, SrS:Cu, was developed. A wide range of EL characteristics of SrS:Cu can be achieved by varying co-dopant material. While the singly doped SrS:Cu thin film EL (TFEL) devices have a cyan color with `CIE y' varying bet...

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Bibliographic Details
Published inDisplays Vol. 19; no. 4; pp. 145 - 149
Main Author SUN, S.-S
Format Journal Article
LanguageEnglish
Published Oxford Elsevier 10.02.1999
Subjects
Applied sciences
Display
Electronics
Exact sciences and technology
Electroluminescent device
Luminance signal
Phosphorus
Brightness distribution
Blue light
Color display
Copper
Energy transfer
Implementation
Display
Thin film
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Summary:A highly efficient new blue emitting electroluminescent (EL) phosphor material, SrS:Cu, was developed. A wide range of EL characteristics of SrS:Cu can be achieved by varying co-dopant material. While the singly doped SrS:Cu thin film EL (TFEL) devices have a cyan color with `CIE y' varying between 0.27 and 0.32, the SrS:Cu devices co-doped with Ag exhibit a true blue color, e.g., CIE y identical with 0.13-0.22. The luminous efficiency of SrS:Cu, Ag, e.g. 0.15-0.24 lm /W is much higher than the existing blue EL phosphors, e.g. (SrCa)Ga sub(2)S sub(4:)Ce and blue filtered SrS:Ce, when the color is matched. It is expected that the color and brightness performance of the next generation of color TFEL displays will be greatly improved once SrS:Cu, Ag is implemented into production.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0141-9382
1872-7387
DOI:10.1016/s0141-9382(98)00044-4