Dye sensitization solar cell and working electrode thereof

Abstract

The invention provides a dye-sensitized solar cell structure based on filamentary working electrode and pertains to dye-sensitized solar cell structure technology field.The working electrode includes conductive filamentary substrate and sensitized semiconductor film. The sensitized semiconductor film is porous film structure composed of different size semiconductor particles, which absorb sensitized dye molecules; the sensitized semiconductor film covers the surface of conductive filamentary substrate. The conductive filamentary substrate has the advantages of rich resources, small size, free shape change, convenient process, easy series parallel connections and so on. The invention provides a cheap and efficient solution for light energy power supply in narrow and special space.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, and relates to a dye-sensitized solar cell structure and a working electrode thereof. Background technique [0002] A dye-sensitized solar cell is mainly composed of a working electrode, an electrolyte layer and a counter electrode; the electrolyte layer can be solid or liquid. The working electrode includes a conductive substrate, a porous membrane of semiconductor material and a sensitizing dye. Due to the limitation of materials and processing technology of traditional solar cells, the conductive substrate of the working electrode is usually a flat plate structure. When forming a battery array, it can only be connected by additional wires. In many occasions, especially the current rapid development of portable electronic devices, the available space is very limited and often has an irregular shape, and even changes with the use of the occasion (such as highly integrated sm...

AI Technical Summary

Problems solved by technology

The flat structure of traditional solar cells greatly limits its scope of application and constrains the designer's thinking

Moreover, in the power supply of actual electronic circuits, a higher driving voltage (>3V) is often required, and the current does not need to be too high. This requires batteries to be connected in series to form a battery array for power supply. The traditional connection method of external wires makes microelectronics The already narrow space inside the device is even more tense

[0003] Moreover, the main bottleneck limiting the large-scale application of dye-sensitized solar cells is the cost of the cells.

Due to the limitations of the process, the manufacturing cost of flat-plate traditional photovoltaic cells with special shapes is often difficult to accept for civilian-level commercial applications

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