Elsevier, Solar Energy Materials and Solar Cells, 4(64), p. 385-392
DOI: 10.1016/s0927-0248(00)00231-2
Full text: Download
Nanocrystalline solar cells were made by incorporation of cis-dithiocyanato-bis(2,2′-bipyridyl-4,4′-dicarboxylate) ruthenium (II) into sputter deposited titanium oxide films. After a pyridine treatment, it was possible to achieve a photoelectric conversion efficiency as high as 7% for a solar intensity of – almost the same as for conventional nanocrystalline cells with colloidally prepared titanium oxide. Transmission electron microscopy indicated a parallel penniform microstructure, and secondary ion mass spectroscopy showed that the dye incorporation was uniform except in the bottom parts of the sputtered films where a decreased porosity seems to limit the penetration of the dye.