One Dimensional Nanostructure Materials: Synthesis And Photoluminescence Property Characteristics

Research on one-dimensional nanostructure has been one of the most important fields and focus of nanomaterials because of their contribution to the understanding of the basic concepts and potential technological applications. The successful syntheses of one-dimension nanomaterials are the foundation toresearch on the properties of one-dimension nanomaterials. we focused on the synthesis of one-dimension nanostructures(prickly copper sulfide nanowires arrays, ZnO:Sb nanowires et.al) ,works and new findings in the synthesis of quasi-one dimensional nanostructure and their photoluminescence property are studied ,which mainly include:1. Novel prickly copper sulfide nanowires arrays have been fabricated by room-temperature vulcanising copper nanowires array which have been fabricated by electrochemical deposition in AAO template. Contrast copper nanowires arrays made by different electrochemical deposition ways (impulsion way and constant voltage way) after sulfuration, it is found the dimension of nanowires deposited by impulsion way is more uniform; Contrast copper nanowires arrays sulfuration in different atmosphere, sulfuration effectiveness in fine H₂S is better than in admixture gas (H₂S,O₂,H₂O), the dimension change of Cu nanowires is letter after sulfuration, prickly copper sulfide nanowires arrays have been formed Photoluminescence property of novel prickly copper sulfide nanowires array have been studied, it is found that they have (366nmand 467nm) emission peak.2.ZnO:Sb nanowires have been fabricated by simple evaporation znic and stibium powder. The average extent of nanowires is 2μm, average diameter about 200nm. Contrast different substrates and temperature ,it is found that ZnO:Sb nanowires is easy growth on Al₂O₃ ceramic plate and the best growth temperature is about 700°C. Photoluminescence property of ZnO:Sb nanowires have been studied, it is found that they have eigen emission peak(381nm) and expansion blue-green light band(450-500nm), and the expansion blue-green light band is stronger than eigen emission peak.3. We have used two step method (gas-solid reaction and thermal evaporation ) for synthesis of CuO-ZnO nanowires. CuO nanowires, which the average extent of nanowires is about 2μm and average diameter is about 150nm, have been synthesized in 600°C by gas-solid reaction. We evaporated Zn powder on CuO nanowires, different pattern nanowires (like cluster, bar , nail )were found. The content of oxygen and the temperature play important role in the pattern of nanowires , if temperature is high ,nano wires will be thin, and if the content of oxygen is few ,nano wires will be thin. Photoluminescence property of ZnO-CuO nanowires have been studied, it is found that they have purple light emission peak(381nm) and expansion blue-green light band(450nm-500nm).