Full text loading...
SEM images of ZnO nanorods (a) and nanopencils (b) grown on ZnO/Si templates by thermal evaporation. The ZnO/Si templates were grown by radio frequency magnetron sputtering. (c) High magnification TEM image of the tip of the nanopencil with the inset showing the DPs obtained from the FFT. (d) Room temperature PL spectra of ZnO nanorods and nanopencils.
Temperature-dependent PL spectra of ZnO (a) nanorods and (c) nanopencils showing the excitonic emissions , , , and their LO phonon replicas. Temperature-dependent PL peak positions of FX, , and FX-LO of (b) nanorods and (d) nanopencils.
(a) Variations in the integrated intensity of the peaks as a function of the reciprocal of temperature for the ZnO nanorods and nanopencils. The solid lines show the lines of best fit based on Eq. (1). [(b) and (c)] The PL spectra at 125 K of ZnO nanorods and nanopencils fitted with Gaussian curves (green) showing the contributions from the FX, FX-LO, and FX-2LO. The sums of the three Gaussian curves are indicated by the red solid curves.
Article metrics loading...