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β-Ga_2O_3∶Dy nanorod arrays were prepared through a hydrothermal process following by a subsequent heat treatment. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and photoluminescence (PL) spectra were used to characterize the phase, morphology and PL properties of β-Ga_2O_3∶Dy nanorod arrays. FE-SEM results show that the as-formed hydrothermal products are GaOOH nanorod arrays with the aspect ratio of 3, which constructed from nanorods of 100 nm in diamete and 2 μm in length. The β-Ga_2O_3∶Dy nanorod arrays possessing the similar morphology and size with their precursors GaOOH crystal are the final products after 900 ℃ heat treatment. The PL of β-Ga_2O_3∶Dy nanorod arrays consist of two bands, 460～505 nm (the maximum 491 nm) and 570～600 nm (the maximum 580 nm), which assign to the transitions of Dy~ 3+, ~4F_ 9/2-~6H_ 15/2 and ~4F_ 9/2-~6H_ 13/2, respectively. The β-Ga_2O_3 host lattice could transfer the energy to the Dy~ 3+ effectively. Compared with the solid state reaction counterparts, β-Ga_2O_3∶Dy nanorod arsays have the more uniform morphology and the higher efficiency of energy transfer.
β-Ga 2 O 3: Dy nanorod arrays were prepared through a hydrothermal process following by a subsequent heat treatment. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and photoluminescence (PL) spectra were used to characterize the phase , morphology and PL properties of β-Ga 2 O 3: Dy nanorod arrays. FE-SEM results show that the as-formed hydrothermal products are GaOOH nanorod arrays with the aspect ratio of 3, which constructed from nanorods of 100 nm in diamete and 2 μm in length. The β-Ga 2 O 3: Dy nanorod arrays possessing the same morphology and size with their precursors GaOOH crystal are the final products after 900 ° C. heat treatment. The PL of β-Ga 2 O 3: Dy nanorod arrays consist of two bands, 460 to 505 nm (the maximum 491 nm) and 570-600 nm (the maximum 580 nm), which assign to the transitions of Dy ~ 3+, ~ 4F_9 / 2- ~ 6H_15/2 and ~4F_9 / 2- ~ 6H_13 / 2, respectively. The β-Ga 2 O 3 host lattice could transfer the energy to the Dy ~ 3+ effective ly. Compared with the solid state reaction counterparts, β-Ga 2 O 3: Dy nanorod arsays have the more uniform morphology and the higher efficiency of energy transfer.