Graphene/silicon carbide Schottky junction based photovoltaic cell and preparation method thereof

Abstract

The invention provides a graphene / silicon carbide Schottky junction based photovoltaic cell and a preparation method thereof. The method comprises the following steps: placing a TiPdAg back electrode, an n-type monocrystalline silicon piece n-Si, an annular SiO2 layer and an annular gold film from bottom to top in a laminating mode, and forming stepped holes by an inner hole of the gold film, a through hole in the middle of the SiO2 layer and the upper surface of the n-type monocrystalline silicon piece n-Si; tiling the graphene or organic suspension of the graphene on the surface of the stepped holes by methods of directly transferring, spin coating, spraying, dipping and filtering, and leading the dried graphene film to be closely combined with the n-Si on a substrate electrode; and taking a lead wire extracted from one end of the graphene film as an anode of the photovoltaic cell, and taking a lead wire extracted from one end of the TiPdAg back electrode as a cathode of the photovoltaic cell. The photovoltaic cell reduces the utilization ratio of silicon, has simple assembly process and low cost, and is applicable to scale application.

Description

technical field [0001] The invention relates to the field of nano-carbon material devices and applications, in particular to a graphene / silicon Schottky junction-based photovoltaic cell and a preparation method thereof. Background technique [0002] In the field of solar energy utilization, silicon is the most commercially valuable photovoltaic material. However, high energy consumption, noise, waste, and pollution are some of the major problems it faces. In recent years, its negative effects have become increasingly prominent, and related technologies and industries have begun to appear bottleneck effects. At present, people are trying their best to find new materials that can replace silicon, and develop new technologies to reduce the usage rate of silicon and make photovoltaic cells with higher efficiency and more environmental protection. [0003] In the process of searching for new materials and new technologies, nanomaterials and nanotechnology are one of the current...

AI Technical Summary

Problems solved by technology

However, for carbon nanotubes, the limitations of existing preparation technologies have become an important obstacle to their industrialization. It is still impossible to precisely control the chirality of carbon nanotubes, and it is impossible to synthesize macroscopic carbon nanotubes with controllable photovoltaic properties. structure

Carbon nanotubes also have disadvantages as thin-film electrode materials in solar cells, such as the need for post-treatment processes such as purification, and the network structure formed by the tube bundles has large gaps, large surface roughness, and a theoretical upper limit for electrical conductivity (L.F.C.Pereira, et al. .Appl.Phys.Lett.2009, 95, 123106), there is no room for further improvement

Images