BULK HETEROJUNCTION ORGANIC PHOTOVOLTAIC CELL COMPRISING AN ELECTRICALLY ACTIVE LAYER HAVING A VERTICAL SEGREGATION

摘要

The electrically active layer of an organic heterojunction solar cell is associated with an additional layer, so as to promote the vertical segregation between the p-type organic semiconductor material and the n-type carbonaceous semiconductor material that are present in the electrically active layer. The additional layer is in direct contact with the electrically active layer. Said additional layer comprises a compound forming noncovalent interactions with the n-type semiconductor carbonaceous material. In particular, said compound can be P4VP when the electrically active layer is formed of a mixture of P3HT:PCBM. Moreover, said additional layer comprises a n-type semiconductor material.