l2O3:Eu3+的微波水热合成及室温光致发光性能研究

he Eu3+ doped Al2O3 red phosphors materials was prepared via microwave hydrothermal method, by using AlCl3o6H2O, NaOH as raw materials and cetyltrimethyl ammonium bromide (CTAB) as surfactant, respectively. The as-prepared products were characterized by SEM, XRD and luminescence spectroscopy. SEM showed that the particles of Al2O3:Eu3+ was a spherical shape packaged by nanosheets with diameter about 0.9μm. XRD results indicated that Eu3+ doped sample was γ- Al2O3 . The results of photoluminescence displayed that the main emission peaks of Al2O3:Eu3+ could be assigned to the magic dipole transition 5D0→7F1 (594 nm) and 394 nm was the best excitation wavelength. Electric dipole 5D0→7F2 intensity of the sample could increase with the content of Eu3+.When the content of Eu3+ was up to 0.09mol%, electric dipole 5D0→7F2 intensity locating at 618 nm briefly increased.