Organic solar cell with intermediary layers with asymmetric transport characteristics

摘要

The solar cell has an antireflection layer (2) on the outside of a transparent plastics, glass or crystalline substrate (4). A first layer on the inner side of the substrate is an electrode (8). It may act either as the cathode or the anode and may be made of aluminum, copper or ITO (Indium Tin Oxide). A first intermediate layer (10) has an asymmetrical conductivity and acts as an electron acceptor. It also acts as an optical antireflection layer. The next active layer (12) has an electron acceptor side (14) contacting the first intermediate layer and an electron donor side (16) contacting a second intermediate layer (18) and an electrode layer (20).