Broadband white light emission of Lu2MoO6:Eu3+ / g-C3N4 composite phosphors under near-ultraviolet excitation

Lu2MoO6:Eu3+/g-C3N4 composite phosphors were prepared by solid-state method. The effects of concentrations of Eu3+ doped and the ratio of Lu2MoO6:Eu3+/g-C3N4 on the phase composition and luminescence properties were studied by X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy and photoluminescence spectroscopy. The crystallinity of the Lu2MoO6:Eu3+/g-C3N4 composite was improved by increasing the sintering temperature and the cooling time. Under the excitation of 390 nm near-ultraviolet light, the composite phosphor exhibits tunable emission from red to blue light. The white light emission can be adjusted according to the ratio of Lu2MoO6:Eu3+ to g-C3N4. The introduction of g-C3N4 improves the reflective intensity, which provides an idea for improving the luminescent properties of phosphors.