Full text loading...
(a) Top-view and (b) side-view SEM images of Cu-doped ZnO nanorods. (c) Raman spectra of Cu-doped ZnO nanorods (1) before and (3) after annealing, and results of undoped ZnO nanorods (2) before and (4) after annealing are also included for comparison. (d) Typical SIMS spectra of Cu-doped ZnO nanorods.
(a) Room temperature PL spectra of as-grown Cu-doped ZnO nanorods and those after annealing in air at different temperatures from 300 °C to900 °C for 30 min. (b) Optical image of the GL, and the white-colored core of the spot is due to the intensity being too strong for the camera. (c)Dependence of the GL intensity on annealing temperature (TA ).
(a) Low temperature (at 35 K) PL spectra of Cu-doped ZnO nanorods after annealing in air at 800 °C. (b) Dependences of the GL intensity and UV luminescence intensity on temperature; the lines are the fitting curves by using the Arrhenius equation.
(a) Peak intensity of the GL with respect to UV luminescence of Cu-doped ZnO nanorods after annealing sequences with different annealing gases and temperatures. (b) Typical PL spectra corresponding to the annealing conditions labeled by circles in (a).
Article metrics loading...