A potential red phosphor ZnMoO4:Eu3+ for light-emitting diode application

Motivated by the need for new red phosphors for solid-state lighting applications Eu3+-doped ZnMoO4 was prepared by solid-state reaction and its photoluminescence properties were investigated. Compared with Ca0.80MoO4:Eu0.203+, the obtained Zn0.80MoO4:Eu0.203+ phosphor shows a stronger excitation band near 400 nm as well as enhanced red emissions (under 393 nm excitation). The strong red-emission lines at 616 nm correspond to the forced electric dipole 5D0→7F2 transitions on Eu3+. The chromaticity coordinates (x=0.63, y=0.37) are close to the standard of National Television Standard Committee (NTSC). The optical properties suggest that Zn0.80MoO4:Eu0.203+ is an efficient red-emitting phosphor for LED applications.