| 摘要 |
PROBLEM TO BE SOLVED: To provide a conjugated block copolymer excellent in solubility into a solvent, more excellent in a light absorption amount than polythiophene, capable of controlling increase of the light absorption amount of an organic photoelectric conversion layer and morphology, and expressing excellent photoelectric conversion performance.SOLUTION: A conjugated block copolymer includes at least two kinds of conjugated polymer blocks each having a divalent heterocyclic group comprising a condensed-ring &pgr;-conjugated skeleton on a main chain, and in the HOMO level of each conjugated polymer block, a difference between a conjugated polymer block having the maximum value and a conjugated polymer block having the minimum value is 0.50 eV at the maximum. |
