The present invention provides a p-type organic semiconductive material that is easy to produce and that has a high planarity in its polymer skeleton, and also provides a photoelectric conversion material, a photoelectric conversion layer, a photoelectric conversion element, and an organic thin film solar cell each having high photoelectric conversion efficiency and using the p-type organic semiconductive material. Specifically, the invention provides a bibenzo[b]furan compound having at least one constitutional unit represented by the following formula (1) or (2), as well as a photoelectric conversion material, a photoelectric conversion layer, a photoelectric conversion element, and an organic thin film solar cell each using that compound for a p-type organic semiconductive material. (In the formulae, R13 and R14 each represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an optionally substituted hydrocarbon group, an optionally substituted hydrocarbonoxy group, or an optionally substituted heterocyclic group.)
本发明提供了一种易于生产且其聚合物骨架具有高平面度的 p 型有机半导体材料,还提供了一种光电转换材料、光电转换层、光电转换元件以及使用该 p 型有机半导体材料的具有高光电转换效率的有机薄膜太阳能电池。具体地说,本发明提供了一种至少具有一个由下式(1)或(2)表示的构型单元的
联苯并[b]
呋喃化合物,以及一种光电转换材料、光电转换层、光电转换元件和有机薄膜太阳能电池,每种都使用该化合物作为 p 型有机半导体材料。(在式中,R13 和 R14 分别代表氢原子、
氟原子、
氯原子、
溴原子、
碘原子、任选取代的烃基、任选取代的烃氧基或任选取代的杂环基)。