Print Email Facebook Twitter Origin of the efficiency enhancement in ferroelectric functionalized organic solar cells Title Origin of the efficiency enhancement in ferroelectric functionalized organic solar cells Author Asadi, K. de Bruyn, P. Blom, P.W.M. de Leeuw, D.M. Publication year 2011 Abstract We have investigated the efficiency enhancement of organic solar cells upon incorporation of a thin ferroelectric polymer layer. For non-Ohmic contacts the enhancement is due to an increased open circuit voltage, which is, however, independent of the ferroelectric polarization direction. Ferroelectricity cannot play a role due to depolarization and charge compensation. The same improvement is also obtained with a non-ferroelectric fluorinated polymer. The data unambiguously show that the improved efficiency is solely due to improvement of the cathode. The fluorinated polymer layer plays the role of LiF in an optimized solar cell. © 2011 American Institute of Physics. Subject Mechatronics, Mechanics & MaterialsHOL - HolstTS - Technical SciencesIndustrial InnovationCharge compensationEfficiency enhancementFerroelectric polarizationFerroelectric polymersFluorinated polymersFunctionalizedNon-ohmic contactsOrganic solar cellEfficiencyFerroelectricityFluorine containing polymersFunctional polymersOhmic contactsOpen circuit voltagePolarizationSolar cells To reference this document use: http://resolver.tudelft.nl/uuid:307b4370-ab6e-42ea-a486-38a828b61cfb TNO identifier 461467 ISSN 0003-6951 Source Applied Physics Letters, 98 (18) Article number No.: 183301 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.