The invention provides a semiconductor material. The semiconductor material is a perovskite compound shown as a formula AM1x1Pbx2I3-y1Xy2, wherein in the compound, A is one or more of methylammoniumcation, formamidinecation and Cs cation; the valence state of M1 is n1, the valence state of X is -n2, and x1, x2, y1 and y2 meet the following formula: 1+n1x1+2x2=3-y1+n2y2, in which x2 is not equal to0 and x1 and y2 cannot be 0 at the same time; and in the compound, M1 is cation having the electrode potential greater than or equal to E(Pb<4+>/Pb<2+>) and X is anion having the electrode potentialgreater than or equal to E(Pb<4+>/Pb<2+>) or F<->. The perovskite compound is doped with high-oxidation metal ions or strong electron-withdrawing ions or groups, so that the carrier concentration andthe charge transport are increased, the film morphology, the crystallinity and the grain size are improved, and thus the efficiency and the stability of a perovskite solar battery are improved.