Abstract
ZnWO4: 0.07Eu3+ nanophosphors were prepared by the low temperature molten salt method. The crystal structure, morphology, emission spectra, decay lifetime and UV–Vis absorption spectra were characterized. By the doping of Eu3+ ions, the obtained samples keep the multi-wavelength excitation feature of the ZnWO4: 0.07Eu3+ phosphors and ZnWO4: 0.07Eu3+ phosphors can be excited more efficiently by the near-ultraviolet (NUV) and blue light. In this work, we studied luminescent properties and quantum efficiency parameters of ZnWO4: 0.07Eu3+ phosphors, which were calculated via the Judd-Ofelt by fluorescence emission spectrum data. At the same time, it also exhibits better CIE chromaticity coordinate and color purity of the ZnWO4: 0.07Eu3+ phosphor. Results showed that ZnWO4: 0.07Eu3+ red phosphors have potential to be candidate for the white LED applications.
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