Laser Welding Boosts Efficiency of TiO_2 Solar Cells

Dye-sensitized solar cells(DSSCs)have excellent charge collection capabilities,high open-circuit voltages and good fillfactors.However,they do notcompletely absorb all of the photons from visible and near-infrared ranges and consequently

Dye-sensitized solar cells （DSSCs） have excellent charge collection capabilities, high open-circuit voltages and good flU- factors. However, they do not completely absorb all of the photons from visible and near-infrared ranges and consequently have lower short-circuit photocurrent densities than inorganic photovoltaics. Increasing the short-circuit current density of DSSCs is a key factor in improving the efficiency of these devices. Researchers have recently demonstrated that the inter-electrode contact resistance arising from poor interracial adhesion is responsible for a considerable portion of the total resistance in the DSSC.