Title of article :
Structural and optical properties of Mn2+ and Li+ codoped ZnGa2O3.95M0.05 (M=S, Se, and Te) phosphors
Author/Authors :
Kim، نويسنده , , J.S. and Kang، نويسنده , , H.I. and Lee، نويسنده , , S.B. and Sue، نويسنده , , S.H. and Choi، نويسنده , , J.C. and Lee، نويسنده , , M. and Bahng، نويسنده , , J.H. and Park، نويسنده , , H.L and Kim، نويسنده , , G.C and Kim، نويسنده , , T.W. and Whang، نويسنده , , Y.H and Mho، نويسنده , , S.I.، نويسنده ,
Abstract :
Structural and optical properties on various kinds of Mn2+ and Li+ codoped ZnGa2O3.95M0.05 (M=S, Se, and Te) were investigated by using X-ray diffraction (XRD), cathodoluminescence (CL), and photoluminescence excitation (PLE) measurements. The results of the XRD patterns showed that the lattice constants of the ZnGa2O3.95M0.05:Mn2+, Li+ decrease with the substitution of S, Se, and Te for the oxygen in the ZnGa2O4. The CL and PLE spectra exhibited that the luminescence intensity of the ZnGa2O3.95Se0.05:Mn2+, Li+ was the strongest among various samples studied in this work. The enhancement of the luminescence intensity in the ZnGa2O3.95Se0.05:Mn2+, Li+ originated from the increase of the conductivity due to Li+ doping. These results can help improve understanding Mn2+ and Li+ doped ZnGa2O3.95Se0.05 phosphors for the application in field-emission display devices with high brightness.
