Abstract
Sonochemical synthesis of sulphur doped ZnO (ZnO:S) nanorods and multipodes is reported. Formation of hexagonal wurtzite phase of ZnO is confirmed by X-ray diffraction measurements. Electron microscopic studies show that the nanorods are grown along c-axis and formed multipode like superstructures in ZnO:S. Strong optical absorption bands in the region 300–800nm are observed for ZnO:S compared to ZnO. This ensures the application of ZnO:S nanopowders in sunscreens as UV blocking agents. Photoluminescence (PL) spectra reveal two new bands at 439nm and 679nm for ZnO:S when excited with 354nm light. Enhanced and modified optical properties of ZnO:S nanorods are analysed in the light of sulphur occupying anion and interstitial sites.
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