Highly Conductive Bilayer Transparent Conducting Oxide Thin Films for Large-Area Organic Photovoltaic Cells

Highly conductive In-doped CdO/Sn-doped In2O3 (ClO/ITO) bilayer transparent conducting oxide (TCO) thin films were prepared by combining, in sequence. metal-organic chemical vapor deposition (MOCVD) and ion-assisted deposition (IAD) techniques. The bilayer substrates, with I low In content of similar to 19 atom % and a low sheet resistance of only similar to 4.9 Omega/square, were investigated its anodes in the bulk-heterojunction (BHJ) organic photovoltaic (OPV) devices using poly(2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylenevinylene) (MDMO-PPV)center dot[6,6]-phenyl C-61 butyric acid methyl ester (PCBM) its the active layer The bilayer anode OPVs of the current laboratory size (similar to 0.06 cm(2)) exhibit performance comparable to those of commercial ITO-based control devices. The effect of TCO conductivity on OPV performance in larger area devices is analyzed through a simulation model. The results reveal significant advantages of using the highly conductive bilayer TCO anodes for large-area OPV cells.