Preparation and Photoluminescence Properties of Zno-Covered Carbon Fibers

摘要

This paper reports that ZnO nanosheet-covered carbon fibers are synthesized by thermal oxidation of zinc films deposited on carbon fiber surfaces.The structure and optical properties were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM)and photoluminescence(PL) spectrum.The result shows that all of the cabon fibers are coated ZnO nanosheets.An orange-red emission around 683 nm was found in PL spectrum when the sample prepared at 400 °C for 4 hours in air.I considered that the growth of ZnO nanosheets may be related to the size of substrates and reaction temperature.The orange-red emission was resulted from the interstitial carbon of ZnO-nanosheet-covered fibers,and green emission results from the oxygen vacancies.