NOVEL COMPOUND, AND COMPOSITION FOR FORMING HOLE TRANSPORTING LAYER FOR PEROVSKITE SOLAR CELLS

摘要

Provided are: a composition for forming a hole transporting layer for perovskite solar cells, which is inexpensive and does not need to be used together with a dopant; and a compound which can be contained in a composition for forming a hole transporting layer. A compound represented by general formula (I) (wherein Ar represents an aryl group; A represents a structure represented by formula (II); Z's independently represent a hydrogen atom, a structure represented by general formula (III), or a structure represented by formula (IV), and maybe the same as or different from each other, wherein a case where each of Z's is a hydrogen atom is excluded; Y's independently represents at least one member selected from the group mentioned below; R1 and R2 independently represents a hydrogen atom, an alkyl group or an alkoxy group, or R1 and R2 may together form a ring having one or two oxygen atoms; ×'s independently represent an alkyl group, an alkoxy group, an alkylthio group, a monoalkylamino group or a dialkylamino group each of which may be substituted by a halogen atom; k represents 0 or 1; l represents 2 or 3; m represents an integer of 1 to 6; and r represents 1 or 2; wherein, when k is 0, 1 is 3, m is 1 and all of three bonds of A are bonded to Z.;