Patent ID: 7799990

Claim:
An organic photovoltaic device, comprising: one or more solar cells, each solar cell comprising: a. a transparent substrate; b. a tin-doped indium oxide (ITO anode) or other transparent conducting anode formed on the transparent substrate; c. a semiconducting layer formed on the ITO anode, the semiconducting layer comprising poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(styrenesulfonate) (PSS); d. an electron-blocking layer (EBL) formed on the semiconducting layer, the EBL comprising a polymer poly(9,9-dioctylfluorene-co-N-(4-(3-methylpropyl)) diphenylamine) (TFB) and a small molecule 4,4′-bis[(p-trichlorosilylpropylphenyl) phenylamino]biphenyl (TPDSi 2 ); e. an active organic layer formed on the EBL, the active organic layer comprising poly(2-methoxy-5-(3′,7′-dimethyl-octyloxy))-p-phenylene vinylene (MDMO-PPV) and [6,6]-phenyl-C 61 butyric acid methyl ester (PCBM); f. a lithium fluoride (LiF) layer formed on the active organic layer; and g. a metallic cathode formed on the LiF layer, the metallic cathode comprising an aluminum (Al) cathode.