Advanced Functional Materials · 2010 · 171 citations · 17 references
EngineeringMaterials EngineeringMaterials ScienceElectronic MaterialsOptoelectronicsSemiconductor MaterialsCarrier TransportCharge Carrier TransportOrganic Electronic MaterialsOrganic SemiconductorsSemiconductor PhysicsSolar CellsCarrier MobilityCarrier Transport In Organic SemiconductorsCharge Carrier DensityCharge Carrier MobilityElectrical Transport PropertiesLocalized StatesOptoelectronic PropertiesOrganic Photovoltaics
Abstract Here, a new methodology for analyzing the charge‐density dependence of carrier mobility in organic semiconductors, applicable to the low‐charge‐density regime (10 14 –10 17 cm −3 ) corresponding to the operation conditions of many organic optoelectronic devices, is reported. For the P3HT/PCBM blend photovoltaic devices studied herein, the hole mobility µ is found to depend on charge density n according to a power law µ(n) ∝ n δ , where δ = 0.35. This dependence is shown to be consistent with an energetic disorder model based upon an exponential tail of localized intra‐band states.
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Youngkyoo Kim, Steffan Cook, Sachetan M. Tuladhar et al. · Nature Materials · 2006 · 2.3K citations · Full text
Natural Sciences, Materials Engineering, Materials Science +17
Unified Description of Charge-Carrier Mobilities in Disordered Semiconducting Polymers
W. F. Pasveer, J. Cottaar, C. Tanase et al. · Physical Review Letters · 2005 · 962 citations · Full text