Synthesis and characterization of twinned flower–like ZnO structures grown by hydrothermal methods

Twinned flower-like ZnO structures have been synthesized by one-step CTAB assisted hydrothermal methods at a low-temperature as 90 °C. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) results disclosed a twinned flower-like morphology and hexagonal wurtzite structures. The XRD pattern and temperature-dependent PL results show a mixed structure of as-grown samples, which are confirmed by the SEM results. The CL spectrum on a single twinned flower-like ZnO structures showed an excellent optical property. Based on experimental results, self-etching and regrowth are suggested as the mechanism to grow the flower-like structures.