Synthesis Of Carbon Nanotube Arrays And Studies On Counter Electrode Of Dye-sensitized Solar Cells

With the prospect of traditional energy being gradually depleted and the increasing air pollution, developing and using renewable energies have become an increasing concern. And researches on new energy materials such as their synthesis are the base and premise of using renewable energies. Here, we study the new energy nano materials-carbon nanotube, focus on its synthesis and growth mechanism, and its application in counter electrode of dye-sensitized solar cells. On the other hand, using low-cost transition metal oxide powers with proper process as counter electrode of dye-sensitized solar cells has also been studied: the problems of lower catalytic and conductive performance have been solved, with the efficiency comparable to platinum electrode. The concrete content includes as follows:(1) synthesis of carbon nanotube arrays:with iron as catalyst for growing carbon nanotube arrays, study the influence of different process on catalysts, and compare the catalyst under different process by atomic force microscopy and scanning electron microscope, get the optimization of process parameters; use the catalyst under the optimized process to grow carbon nanotube arrays, study the influence of different growth parameters and get the optimized process parameter, ultimately achieve long carbon nanotube arrays.(2) research on counter electrode of dye-sensitized solar cells:By dealing the transition metal oxide powder with ammonia gas to serve as counter electrode, can greatly enhance the efficiency of solar cells; further study the mechanism of this phenomenon by X-ray Photoelectron Spectroscopy and X-ray diffraction.