Solar cell based on composite nanostructured light anode

Abstract

The present application relates to a solar cell based on a composite nanostructured photoanode, the solar cell is a dye-sensitized solar cell, and the dye-sensitized solar cell includes a conductive substrate, a photoanode, a dye sensitizer, an electrolyte and a counter electrode, wherein, The photoanode and the counter electrode are arranged on the conductive base and opposite to the package, the surface of the photoanode is adsorbed with a dye sensitizer, and the electrolyte is a liquid electrolyte, which is arranged between the photoanode and the counter electrode; The first absorption layer, the scattering layer and the second absorption layer; wherein, the first absorption layer is a ZnO nanowire layer, the scattering layer is a WO3 particle layer, and the second absorption layer is a TiO2 particle layer.

Description

technical field [0001] The present application relates to the field of solar cells, in particular to a solar cell based on a composite nanostructure photoanode. Background technique [0002] Energy is an important material basis for national economic and social development. At present, energy mainly relies on fossil energy such as oil, coal, and natural gas. However, traditional fossil energy is increasingly exhausted, and the extensive use of traditional fossil energy has caused serious damage to the environment. In recent years In recent years, many parts of the world have experienced warm winters one by one, and the southern European countries have experienced high temperatures of 50°C in many summers. The direct cause of climate warming is the CO emitted by the combustion of fossil fuels. 2 lead to the global warming effect. [0003] Solar energy is a clean and renewable energy. The large-scale application of solar energy is a key breakthrough to solve energy and enviro...

AI Technical Summary

Problems solved by technology

[0005] Dye-sensitized solar cells are mainly composed of five parts: conductive substrate, photoanode, dye sensitizer, electrolyte and counter electrode. Among them, the composition and structure of photoanode directly affect the conversion efficiency and long-term stability of dye-sensitized solar cells. It is the most important part of the battery. In the current stage of dye-sensitized solar cells, the photoanode is generally made of TiO 2 Nano film composition, TiO 2 The nano-film mainly carries the dye sensitizer and receives and transmits electrons; in order to improve the photoelectric conversion efficiency, by using TiO with a smaller particle size (20nm) 2 Nanoparticles form a thin film, which is beneficial to increase the specific surface area of ​​the photoanode and increase the adsorption of dyes. However, due to the 2 The smaller the size of the nanoparticle, the higher the light transmittance, but it will cause a waste of sunlight. Therefore, it is necessary to prepare TiO2 with a large particle size on the outer layer of the photoanode film. 2 The scattering layer composed of nanoparticles reflects the sunlight passing through the inner photoanode film and absorbs it again, thereby effectively improving the light harvesting efficiency of the photoanode film and improving the photoelectric conversion efficiency of the dye-sensitized solar cell

Images