| abstract |
The invention discloses an additive-assisted perovskite solar cell and a preparation method thereof, which sequentially include a bottom substrate, a bottom electrode layer, a bottom charge collection layer, an active light-absorbing layer, a top charge collection layer, and a top electrode layer from bottom to top; At least one side of the bottom electrode layer and the top electrode layer is transparent; the active light-absorbing layer is an additive-assisted growth perovskite semiconductor material APbX 3 , wherein A is at least one of alkylamine, alkylamidine and alkali group elements, and X Is at least one of iodine, bromine and chlorine. The present invention regulates the thin film morphology and crystallinity of the perovskite active layer by adding trace additives to the perovskite solution of anhydrous lead acetate, improves the transport and collection of carriers; improves the performance of perovskite The positive and negative scanning difference of the solar cell ensures the steady-state output and improves the cell efficiency and repeatability. |