The invention provides a phenanthrocarbazole compound. The phenanthrocarbazole compound is represented by a formula (I) shown in the description, wherein R1 is selected from H, C1-C12 alkyl and C1-C12 alkoxy, and R2 is selected from H, C1-C12 alkyl, C1-C12 alkoxy and C1-C12 alkoxy substituted phenyl. Compared with the prior art, the phenanthrocarbazole compound provided by the invention is of a phenanthrocarbazole, which serves as a core, and two-diarylamine conjugate-coupled structure, and the compound with the structure has a relatively good energy level structure and high hole mobility, so that perovskite solar cells with hole transport layers prepared from the phenanthrocarbazole compound have relatively high energy conversion efficiency.