Low temperature synthesis and luminescence investigations of YAG:Ce, Eu nanocomposite powder for warm white light-emitting diode

摘要

The preparation of the cerium and europium co-doped YAG materials as well as the study for their synthesis and emitting mechanism of the energy transfer between Ce~(3+) and Eu~(3+) were investigated in the present study. YAG:Ce~(3+), Eu~(3+) powders were synthesized using a high-energy ball milling method in different sintering temperature and atmosphere: air and H_2/N_2. The effects of the synthesis procedure on the crystallinity, morphology, structure, and luminescence spectra were examined by X-ray diffraction, field emission-scanning electron microscopy, and photoluminescence spectroscopy. The europium co-doped YAG:Ce~(3+) phosphors is improved the chromaticity coordinates.