Applied Physics Letters · 2007 · 158 citations · 16 references
Natural SciencesMaterials EngineeringMaterials SciencePolymer ChemistryPolymer EngineeringPolymer MaterialsConducting PolymersConductive PolymersPhotovoltaic DevicesPolymer Thin FilmsSolar Cell MaterialsSolar CellsBuffer LayersEnergy Conversion EfficiencyOrganic Photovoltaic CellsOrganic Solar CellsPoly(3, 4-Ethylenedioxythiophene)Power ConversionPower Conversion EfficiencySeries Resistance
The influence of anode buffer layers on the performance of polymer photovoltaic devices based on blends of poly(3-hexylthiophene) and [6,6]-phenyl-C-61-buytyric acid methyl ester has been investigated. The buffer layers consist of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT-PSS) doped with different concentrations of mannitol. Improved power conversion efficiency, up to 5.2%, has been observed by reducing the resistance of PEDOT:PSS after doping. One extrapolation method has been developed to exclude the resistance from the connection of the electrodes from the total device resistance. The results confirm that the device improvement is due to the reduction of series resistance of the PEDOT:PSS after the mannitol doping.
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4.2% efficient organic photovoltaic cells with low series resistances
Jiangeng Xue, Soichi Uchida, Barry P. Rand et al. · Applied Physics Letters · 2004 · 558 citations