| abstract |
A perovskite solar cell based on co-doping of water-soluble and alcohol-soluble carbon quantum dots and a preparation method thereof belong to the technical field of perovskite solar cells. Sequentially by ITO conductive glass substrate/water-soluble carbon quantum dots doped PEDOT:PSS hole transport layer/perovskite active layer/alcohol-soluble carbon quantum dots doped PCBM electron transport layer/BCP hole blocking layer/Ag anode composition. In the present invention, water-soluble carbon quantum dots are doped into the PEDOT:PSS hole transport layer, and the high conductivity and surface activity of carbon quantum dots are used to reduce the Coulomb force between PEDOT and PSS, improve its conductivity, and balance battery carriers transmission. At the same time, the alcohol-soluble carbon quantum dots are doped into the PCBM electron transport layer, and their small size penetrates into the polycrystalline perovskite gap, passivating the grain boundary defects of the perovskite layer, improving the carrier transport, and then improving the perovskite. battery performance. |