Print Email Facebook Twitter High work function transparent middle electrode for organic tandem solar cells Title High work function transparent middle electrode for organic tandem solar cells Author Moet, D.J.D. de Bruyn, P. Blom, P.W.M. Publication year 2010 Abstract The use of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) in combination with ZnO as middle electrode in solution-processed organic tandem solar cells requires a pH modification of the PEDOT:PSS dispersion. We demonstrate that this neutralization leads to a reduced work function of PEDOT:PSS, which does not affect the performance of polythiophene:fullerene solar cells, but results in a lower open-circuit voltage of devices based on a polyfluorene derivative with a higher ionization potential. The introduction of a thin layer of a perfluorinated ionomer recovers the anode work function and gives an open-circuit voltage of 1.92 V for a double junction polyfluorene-based solar cell. Subject PhysicsEthylenedioxythiophenesHigh work functionPEDOT:PSSPerfluorinated ionomerPH modificationPoly(styrene sulfonate)Poly-thiophenePolyfluorene derivativeSolution-processedTandem solar cellsThin layersZnOOpen circuit voltageSolar cellsSulfur compoundsZinc oxideIonization potential To reference this document use: http://resolver.tudelft.nl/uuid:0646b7a1-e817-4795-9ccf-5faa7bdd784b TNO identifier 461592 ISSN 0003-6951 Source Applied Physics Letters, 96 (15) Article number No.: 153504 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.