Dye sensitized solar cell and preparation method thereof

Abstract

The invention discloses a dye sensitized solar cell with a composite nano structure and a preparation method thereof. The solar cell comprises an FTO (fluorinedoped tin oxide) glass counter electrode, a single-phase titanium dioxide nano tube array which is transplanted on a conductive glass and is high in crystallization and ordering, a TiO2 nano meso pore film formed on the nano tube array, a dye which has efficient absorbing capacity on sunlight and the like. According to the invention, the TiO2 meso pore film which has larger surface area is compounded on the surface of the nano tube array, thereby remarkably increasing the adsorptive capacity of the dye and obtaining efficient absorption of a solar spectrum. A highly crystallized anatase nano tube array is adopted as a light anode material of the dye sensitized solar cell, a transmission path in a semiconductor for a carrier is shortened and the recombination probability of electrons is reduced, thereby contributing to improving the energy conversion efficiency of the dye sensitized solar battery.

Description

technical field [0001] The invention relates to a titanium dioxide nanotube dye-sensitized solar cell and a preparation method thereof. Background technique [0002] In recent years, energy issues have attracted more and more attention. With the depletion of fossil fuel energy, the development of society urgently needs an efficient and non-polluting clean energy that can replace traditional energy. Available renewable energy mainly includes wind energy, water energy, geothermal energy, tidal energy and solar energy. Among them, solar energy, which accounts for more than 99% of the total energy of the earth, is an inexhaustible and inexhaustible clean energy. [0003] Compared with the commercialized silicon solar cells with complex process and expensive cost, dye-sensitized solar cells (DSCC) have become a research hotspot in the field of solar cells due to their advantages of cheapness, high efficiency, simple process, and long life. As the third generation of solar cells...

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Problems solved by technology

For TiO prepared by anodic oxidation 2 When the nanotube array film is annealed and crystallized at the same time as the Ti substrate, a dense oxide layer will inevitably be formed at the bottom of the nanotubes, and as the annealing temperature increases, the "phagocytic effect" from the oxide layer will affect the TiO 2 The structure of the nanotube array film has a fatal impact and accelerates the transition from the anatase phase to the rutile phase, which is not conducive to obtaining a stable anatase phase TiO 2 nanotube array film

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