| abstract |
The invention provides a multi-component perovskite absorbing layer precursor solution and a preparation method thereof. The precursor solution is less affected by the natural environment, has low requirements on environmental humidity, temperature and reagent purity, and can be used at room temperature Maintain high life and thermal stability for a long time. The precursor solution is prepared from the following components: six solutes are MABr(CH 3 NH 3 Br), PbBr 2 , FAI(HC(NH 2 ) 2 I), MAI(CH 3 NH 3 I), PbI 2 , MACl (CH 3 NH 3 Cl); the three solvents are DMF (N,N-dimethylformamide), DMSO (dimethyl sulfoxide), and GBL (γ-butyrolactone). |