Method for preparing co-sensitized thin film through bidirectional diffusion technology

Abstract

The invention discloses a method for preparing a co-sensitized thin film through a bidirectional diffusion technology. The film comprises the following steps of: (1) etching a clip-shaped groove on aconductive glass substrate; (2) filling polyethylene into the clip-shaped groove; (3) preparing a nano-porous semiconductor film on the conductive glass; (4) sintering the conductive glass in a mufflefurnace; (5) injecting a dye a into the clip-shaped groove in the sintered conductive glass; (6) after the adsorption is completed, injecting glass repair resin into the clip-shaped groove, and curing the glass repair resin to enable the resin to completely replace air in glass gaps, so that the glass and the resin are completely bonded into a whole; and (7) immersing the semiconductor thin filmadsorbed with the dye a into a second dye b solution to prepare the co-sensitized thin film. According to the invention, a plurality of dye adsorption layers can be obtained, and dye molecules of eachadsorption layer do not interfere with each other.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a method for preparing co-sensitized thin films by bidirectional diffusion technology. Background technique [0002] Solar photovoltaic power generation provides a good solution to the environmental problems caused by energy shortage and non-renewable energy consumption, and solar cells as power generation components have also received extensive attention from researchers. There are many kinds of solar cells, but due to their low cost (only 1 / 5-1 / 10 of silicon-based solar cells), non-toxic, non-polluting, high theoretical conversion efficiency, and simple preparation process, dye-sensitized solar cells have attracted much attention. people's eyes. And as a new type of solar cell, the working principle of DSSC cell is completely different from that of traditional solar cells, and has become a hot research topic at present. [0003] In the initial research of DSSC cel...

AI Technical Summary

Problems solved by technology

However, the existing technology is to immerse the semiconductor film in the dye solution. This method only passively controls the adsorption of the dye in one direction, which not only causes the occupation of the dye molecules, the amount of adsorption and the interaction between the dye molecules. Contradictions, and this method is difficult to prepare co-sensitized films containing more than two dye adsorption layers