Method for preparing selenium thin-film solar cell by microwave-assisted spin-coating method

The invention discloses a method for preparing a selenium thin-film solar cell through a microwave-assisted spin coating method, and the method comprises the following steps: sequentially preparing a transparent electrode layer, a titanium dioxide compact layer and a titanium dioxide mesoporous layer on a transparent substrate, placing the transparent substrate on a suction cup of a spin coater after the preparation is completed, dropwise adding a selenium solution on the titanium dioxide mesoporous layer, and carrying out spin coating to obtain the selenium thin-film solar cell. After the solvent is volatilized, obtaining an amorphous selenium film which is uniformly spread on the surface of the titanium dioxide mesoporous layer; after microwave irradiation, the amorphous selenium film generates a polycrystalline selenium film on the titanium dioxide mesoporous layer to obtain a selenium photovoltaic light absorption layer; depositing a hole transport layer on the selenium photovoltaic light absorption layer