Flexible metal-based photoanodes for dye-sensitized solar cells

Abstract

The invention discloses a photoanode for a flexible dye-sensitized solar cell based on an active metal, which comprises a conductive base, the conductive base is an active metal base with a filamentary or mesh structure, or the conductive base is an active metal plated For other substrates with filamentary or network structure, a dense oxide layer is deposited on the surface of the conductive substrate, a semiconductor nano-oxide layer is grown on the surface of the dense oxide layer, and a layer of photosensitive oxide is loaded on the surface of the semiconductor nano-oxide layer. agent. The photoanode of the present invention can utilize the low work function of the active metal and better energy level matching with the semiconductor oxide layer to obtain better battery performance. Deposit a dense oxide layer on the surface of the active metal substrate to prevent the active metal substrate from being corroded and oxidized during battery assembly and use. It has a wide range of applicable materials and low equipment requirements.

Description

technical field [0001] The invention belongs to a dye-sensitized solar cell, in particular to an active metal-based photoanode for a flexible dye-sensitized solar cell. Background technique [0002] Dye-sensitized solar cell (DSSC) is prepared by imitating the principle of leaf photosynthesis, and is a new type of cheap and easy-to-obtain thin-film solar cell. The light absorption and charge separation and transmission of this type of battery are carried out by different substances: the light absorption is completed by the dye adsorbed on the surface of the nano-semiconductor, and the nano-semiconductor acts as a charge separation and transport carrier. Together, the dye and the semiconductor assembled on the conductive substrate constitute the photoanode of the dye-sensitized solar cell. Traditional photoanodes are generally based on hard conductive glass, but conductive glass is expensive, has poor pressure resistance, and is limited by space, which is not conducive to re...

AI Technical Summary

Problems solved by technology

Most of the metal substrate materials that have been investigated in the existing research use relatively stable metals such as Fe and Ti, but their cost is high and the energy band structure often matches poorly with nano-semiconductors.

More active metals such as Mn and Zn have low work functions and energy level structures that better match semiconductor oxides, but their chemical stability is poor and they are easily corroded during preparation and use.

therefore has not been applied