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http://dx.doi.org/10.4313/JKEM.2006.19.5.432

Luminescence Characteristics of ZnGa2O4 Phosphors with the Doped Activator  

Hong Beom-Joo (경원대학교 전기정보공학과)
Choi Hyung-Wook (경원대학교 전기정보공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.19, no.5, 2006 , pp. 432-436 More about this Journal
Abstract
The $ZnGa_2O_4$ and Mn, Cr-doped $ZnGa_2O_4$ Phosphors were synthesized through conventional solid state reactions. The XRD patterns show that the $ZnGa_2O_4$ has a (3 1 1) main peak and a spinel phase. The emission wavelength of $ZnGa_2O_4$ showed main peak of 420 nm and maximum intensity at the sintering temperature of $1100^{\circ}C$. In the crystalline $ZnGa_2O_4$, the Mn shows green emission (510 nm, $^4T_1-^6A_1$) with a quenching concentration of 0.6 mol%, and the Cr shows red emission (705 nm, $^4T_2-^4A_2$) with a quenching concentration of 2 mol%. These results indicate that $ZnGa_2O_4$ Phosphors hold promise for potential applications in field emission display devices with high brightness operating in full color regions.
Keywords
$ZnGa_2O_4$; Phosphor; Solid state reaction; Cathodoluminescence(CL);
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