Advanced Functional Materials · 2013 · 45 citations · 31 references
EngineeringMaterials EngineeringMaterials ScienceElectronic MaterialsSemiconductor DevicesSemiconductor MaterialsOrganic Electronic MaterialsOrganic SemiconductorsPhotovoltaic DevicesSemiconductor InterfacesSemiconductor SurfacesSolar CellsBulk Heterojunction Solar CellsCharge TransportInterfacial Potential DistributionOpen-circuit VoltageOrganic ElectronicsOrganic Solar CellsPotential DistributionSurface Potential
Abstract The charge transport in organic solar cells is investigated by surface potential measurements via scanning Kelvin probe microscopy. Access to the solar cell's cross‐section is gained by milling holes with a focused ion beam which enables the direct scan along the charge transport path. In a study of poly(3‐hexylthiophene):1‐(3‐methoxycarbonyl)propyl‐1‐phenyl[6,6]C61 (P3HT:PCBM) bulk heterojunction solar cells, the open circuit voltage is built up at the top contact. A comparison of the potential distribution within normal and inverted solar cells under operation exhibits strongly different behaviors, which can be assigned to a difference in interface properties.
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M. Nonnenmacher, M. O’Boyle, H. K. Wickramasinghe · Applied Physics Letters · 1991 · 2.3K citations
Natural Sciences, Materials Engineering, Materials Science +17
Origin of the Open Circuit Voltage of Plastic Solar Cells
Christoph J. Brabec, Antonio Cravino, Niyazi Serdar Sariçiftçi et al. · Advanced Functional Materials · 2001 · 1.8K citations · Full text
Kelvin probe force microscopy and its application
Wilhelm Melitz, Jian Shen, Andrew C. Kummel et al. · Surface Science Reports · 2010 · 1.6K citations
Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer
Letian Dou, Jingbi You, Jun Yang et al. · Nature Photonics · 2012 · 1.4K citations
Natural Sciences, Materials Engineering, Materials Science +14