Doped interfacial modification layers for stability enhancement for bulk heterojunction organic solar cells

摘要

Organic photovoltaic (OPV) devices comprising an organic semiconductor doped with a metal or organic dopant to form an interfacial modification layer, where the layer is disposed on an active layer including a conjugated polymer and a fullerene are described. In the layer, the organic semiconductor can be BPhen or TPBI, and the dopant can be a metal or an organic material. In the active layer, the conjugated polymer can be P3HT and the fullerene can be PCBM or indenyl-substituted fullerene. Improved OPV efficiency and lifetime can be achieved. Good testing results are obtained despite high humidity and high temperature, and modules can be made.