Organic thin-film solar cells, organic semiconducting polymer and an organic semiconductor material for the composition used in this

摘要

PROBLEM TO BE SOLVED: To provide an organic thin film solar cell which has excellent photoelectric conversion efficiency and durability (in particular, durability under the presence of oxygen), and has less deterioration in the photoelectric conversion efficiency even when a cell size is increased.;SOLUTION: In the organic thin film solar cell which includes a first electrode, a second electrode, and a photoelectric conversion layer arranged between the first electrode and the second electrode, the photoelectric conversion layer contains a polymer having a structural unit represented by the formula (I). (In the formula, X¹ and X² represent N or CR³, and at least one of X¹ and X² is N; Z¹ and Z² represent S or Si, and at least one of Z¹ and Z² is S; and R¹ and R² represent a monovalent substituent; R¹ and R² may be bonded to each other to form a ring; and R³ represents a hydrogen atom or a substituent.);COPYRIGHT: (C)2013,JPO&INPIT