RED ELECTROLUMINESCENCE OF MN-DOPED CUALS2 POWDER AND SINGLE-CRYSTAL

In this paper, the first application of ternary compounds of Mn-doped CuAlS2 to a new red powder electroluminescent (PEL) phosphor has been reported. The chromaticity of the emission is a high-purity red very c lose to that of the red-CRT phosphor. The luminance-voltage (L-V), cur rent-voltage (I-V), and luminance-current (L-I) curves of the single c rystal reveal that the excitation of red electroluminescence (EL) is c aused by hot holes. The EL decay mechanism is found to be dominated by Mn-Mn pair relaxation. The DC-EL of the PEL device using Mn-doped CuA lS2 was brighter than the AC-EL. This superior DC-EL performance is ex plained by the emitting position in the phosphor-binder layer.