Customizing electroconductive film of dye sensitization TiO2 nanocrystalline solar battery and preparation thereof

Abstract

The invention discloses a method for preparing a dye sensitized TiO2 nano crystal solar energy battery which is based on a customized micro structure conductive film. TiO2 blocking layer film which inhibits charge recombination, a customized micro structure TiO2 film, dye particles, a finishing coat, a liquid or quasi solid electrolyte and a metal negative electrode, wherein the dye particles are adsorbed on the customized micro structure TiO2 film, the TiO2 film has porosity, the shape of an interface of the film is a rectangle, the size of the structure is that the depth / height is 200nm, the width is 100nm, the length is 100nm, and the depth to width ratio is equal or greater than 2.0. A die structure is transferred on the TiO2 film. The TiO2 film has a micro structure whose height is ordered, the TiO2 film has the advantages that the scattering of photons is capable of being increased, the absorption efficiency of light is increased, the probability of interface recombination is reduced and the like, thereby achieving the purpose of improving the transformation efficiency of DSSCs. The manufacture cost is low, the efficiency is high, and the invention has the advantages of big area preparation.

Description

technical field [0001] The invention belongs to the field of micro-nano manufacturing technology, in particular to a dye-sensitized TiO 2 The invention relates to a customized conductive thin film of nanocrystalline solar cells and a preparation method thereof, so as to improve the photoelectric conversion efficiency of dye-sensitized solar cells (Dye Sensitized Solar Cells, DSSCs for short). Background technique [0002] There are two main types of solar cells: one is inorganic solar cells (mainly silicon-based semiconductors), this type of battery technology is the most mature in comparison, commercialized finished products have been produced, and the efficiency is relatively high between 12% and 16%. During the period, the laboratory once made a record of efficiency as high as 24.4%. The advantage is that the stability and practicability are relatively good, but the high cost restricts its commercial promotion; the other is an organic solar cell (polymer heterojunction ty...

AI Technical Summary

Problems solved by technology

[0002] There are two main types of solar cells: one is inorganic solar cells (mainly silicon-based semiconductors), this type of battery technology is the most mature in comparison, commercialized finished products have been produced, and the efficiency is relatively high between 12% and 16%. During the period, the laboratory once made a record of efficiency as high as 24.4%. The advantage is that the stability and practicability are relatively good, but the high cost restricts its commercial promotion; the other is an organic solar cell (polymer heterojunction type Solar cells, referred to as PSCs), are mainly composed of electron donor-type polymer semiconductors (referred to as p-type polymers) and electron acceptor-type polymer semiconductors (referred to as n-type polymers), that is, both electron donors and acceptors are organic semiconductor compounds. , the combination of two types of polymer semiconductor materials can obtain the characteristics similar to the p-n junction of inorganic semiconductors

The contact (interface) between p-type polymer and n-type polymer forms a so-called "heterojunction", but the conversion efficiency of this type of solar cell is too low, about 1 to 2%; dye-sensitized solar cells are a new type A type of heterojunction solar cell, essentially a new type of solar cell between organic and inorganic solar cells, which combines the advantages of both

Images