Eu3+/Tb3+ co-doped polymethyl methacrylate for white light-emitting applications

We synthesized Eu3+/Tb3+ co-doped polymethyl methacrylate (PMMA), and studied the excitation and emission spectra of the sample in detail. Under 332 nm excitation, the sample can emit strong white-light by mixing red, green, and blue emissions. The CIE chromaticity coordinates (X = 0.355, Y = 0.346) of the luminescence are close to the standard white-light illumination (0.333, 0.333). Thus, the Eu3+/Tb3+ co-doped PMMA is a valuable luminescent material for white light-emitting diodes.