Color‐coordinate control in TFEL devices using multicomponent oxide phosphors
- 1 March 1998
- journal article
- Published by Wiley in Journal of the Society for Information Display
- Vol. 6 (1) , 17-22
- https://doi.org/10.1889/1.1985199
Abstract
Abstract—This paper reports on attempts to control the color coordinate of the green emission from TFEL devices by varying the composition of multicomponent oxide phosphors in the host materials. In TFEL devices using multicomponent oxide phosphors composed of combinations of ZnGa2O4: Mn, ZnAl2O4: Mn, and MgGa2O4: Mn, the substitution of group‐III element sites rather than that of group‐II element sites is more effective for green‐color‐coordinate control. As for Zn(GazAl1−z)2O4: Mn or MgzZn1−z(GazAl1−z)O4: Mn phosphors, the EL emission spectra from the TFEL devices could also be controlled; consequently, the CIE chromaticity color coordinate could be changed. EL characteristics such as luminance and luminous efficacy remained relatively unchanged as the composition was varied up to aboutz= 0.5. A high‐luminance green emission suitable for full‐color displays was realized by TFEL devices using a multicomponent oxide phosphor such as Zn(Ga0.5Al0.5)2O4: c Mn.Keywords
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