Anatase TiO2 nanometer tree array and application of anatase TiO2 nanometer tree array to solar cell preparation

Abstract

The invention discloses a method for preparing an anatase TiO2 nanometer tree array and a method for preparing a fiber dye-sensitized solar cell with the anatase TiO2 nanometer tree array as the electrode. The method includes the steps that a metal wire is ground and cleaned; the metal wire reacts in a mixed solution of (NH4) 2TiF6 and H3BO3 to form a TiO2 nanometer particle seed layer; a reaction solution of oxalic acid titanium oxide potassium dihydrate, diethylene glycol and water, and the metal wire reacts in the reaction solution to generate the anatase TiO2 nanometer tree array; annealing treatment and sensitization treatment are conducted; the electrode is sealed into an electrolytic solution, and the finished fiber dye-sensitized solar cell is acquired through processing. The fiber dye-sensitized solar cell is prepared through a one-step low-temperature water heating method, the method has the advantages that the preparation process is simple, cost is low, and universality is high, and the fiber dye-sensitized solar cell has the high energy conversion rate and good comprehensive performance.

Description

technical field [0001] The invention relates to a method for preparing anatase TiO on various metal wires 2 A method for nanodendritic arrays, and a TiO 2 The invention discloses a preparation method of a fiber dye-sensitized solar cell with a nano-dendritic array as an electrode, belonging to the technical field of solar cells. Background technique [0002] Dye-sensitized solar cells are expected to replace silicon-based solar cells due to their many advantages such as simple fabrication process, low cost, and environmental friendliness. The energy conversion efficiency of the flat dye-sensitized solar cells of the prior art has reached 12.3%, but because the substrate is hard fluorine-doped tin oxide conductive glass, it is not convenient for transportation and application, so flexible metals, conductive plastics and carbon-containing The base has received a great deal of attention. The novel fiber dye-sensitized solar cells can be based on arbitrary flexible conductive...

AI Technical Summary

Problems solved by technology

However, the preparation of one-dimensional TiO by electrochemical anodization 2 There are also obvious defects in the application of nanoarrays and this structure in fiber dye-sensitized solar cells: first, only one titanium wire can be used as an anode at a time, so only one TiO can be prepared at a time. 2 Nanotubes require a long production time and high production costs; second, the titanium substrate is required to provide enough titanium sources, so only titanium wires can be used instead of other lower-cost metal wires as raw materials for preparation, which further increases the cost; third, one-dimensional TiO 2 The specific surface area of ​​nanoarrays is still not large enough to limit the light energy conversion efficiency

[0005] However, the preparation process of the dendritic titanium dioxide nanotube array electrode provided by the above-mentioned invention patent, although it solves the problem of one-dimensional TiO 2 The specific surface area of ​​the nano-array is small, but its preparation method still has obvious defects and deficiencies: First, the anodic oxidation method is used to prepare the titanium dioxide nanotube array, and there is still the problem that only one TiO2 nanotube array can be prepared at a time. 2 Nanotubes have the problems of long production time and high production cost; the second is that the titanium substrate is still required to provide enough titanium source, so only titanium wire can be used instead of other low-cost metal wires as the raw material for preparation; the third is the use of anodic oxidation method Dendritic titanium dioxide nanotube arrays are prepared in two steps with low temperature liquid phase method, the preparation process is complicated and the production cost is high

However, people have not been able to find the preparation of anatase TiO by hydrothermal method 2 Nanoarray approach, high fabrication costs limit anatase TiO 2 Further applications of nanoarrays in dye-sensitized solar cells

Images