| Preparation materials from Zinc Oxide(ZnO short for Zinc oxide) were applied in various fields. The six ridge of ZnO was used in dye sensitized solar cells and could significantly improve between light and electricity conversion efficiency. This was because the main role of the six ridge was to transfer electron. The migration rate and specific surface area of the six ridge were larger than other materials. However, at present conversion efficiency of the six ridge of Zinc Oxide between photo anode and electricity was still relatively low. The domestic photoelectric conversion efficiency was about 1%. Such low conversion efficiency certainly could not be used for the mass production of the photo anode. Comprehensively major problems were poor repeatability, seed layer preparation, orientation, small specific surface area of the six ridges, much defect of the six ridge, low conductive ability of the six ridge ridge(low electron migration rate) and other reasons. So this paper was about the research of six ridge preparation, which could be used in the photo anode in the future to improve conversion efficiency between light and electricity.In this paper, the transmission spectra(Transmittance Spectrun), photoluminescence(PL short for Photolumin Escence), X ray diffraction(XRD short for X-ray Diffaction Spectra) and scanning electron microscope(Scanning Electron Microscope, SEM) to characterize capability of nano structure.(1)The seed layer was thin film of Zinc oxide prepared by magnetron sputtering method. Its repeatability was relatively high, so it could solve the problem of poor repeatability and solve the composite problem between the conductive layer and the electrolyte.(2) The following conclusions came out by studying six ridge capability of different heating process. The transmittance rate was high when six ridge was directly put in water 95℃.(103) crystal face grew fast with increasing temperature accelerated growth, and(002) crystal plane also grew fast under hydrothermal conditions with increasing temperature. When the temperature was greater than 95℃, zinc oxide was almost only along(002) crystal plane unidirectional growth. While the temperature was in a specific or within a certain range of temperature of the less than 95℃,(100) crystal face would grow. The quality of(002) crystal surface crystallinity put directly in the 95℃water was high.(002) the probability of crystal growth was higher. Six ridge grew evenly and erectly. Six ridge top hexagonal structure was complete. There was nearly no dip even on the side. This way solved the problem of poor upright.(3) By changing the concentration of solution of polyethylene imine from 0 to 0.002mol/L the results could be concluded that Zinc Oxide six ridge transmittance rate was decreasing slowly at first and rising slowly then.(002) crystal plane lattice structure grew rising at first and decreasing then with polyethyleneimine increasing.(103) crystal face grew decreasing slowly at first and rising slowly then. In the 0.001mol/L place(002) grew faster and(103) crystal grew least. If the polyethyleneimine wasn’t put in, it was more suitable for the once growth of Zinc Oxide six ridges. If the polyethyleneimine was put in, it was more suitable for the quadratic and more times growth of Zinc Oxide six ridge to prepare long Zinc Oxide six ridge.The length growth of six ridge was Considered. The adding amount of polyethylene imine 0.001mol/L was used in this paper. With zinc acetate and six methyl four amine system was the once growth system. Zinc acetate, six methyl four amines and polyethylene imine 0.001mol/L system was the quadratic growth system.(4)(002) crystal face of the quadratic growth was more. Quadratic(103) crystal face was relatively a small peak. The size of the diameter and the growth of the six ridge was very similar to the quadratic growth. It was following the original growth direction and diameter size. The capability of erection was particularly good. The growth was very natural like the first growth. The length growth of six ridge was achieved.(5) Quadratic growth of Zinc Oxide six ridge was concluded by varying the ratios of zinc and nickel. When the ratio of Zn and NI was 0.94:0.06, the transmissivity was the highest and the defect was the least. The defect reduction was achieved successfully by the addition of nickel.In conclusion, the erection and length growth of six ridge and the weakened defect were achieved successfully. The transmissivity was very low and the filling space of dye was not enough. The preparation of light anode material would need to be improved in order to achieve the purpose of enhance the efficiency of transformation. |
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