Journal of the American Chemical Society · 2011 · 558 citations · 44 references
Natural SciencesMaterials EngineeringMaterials ScienceElectronic MaterialsPolymer ChemistryPolymer MaterialsOrganic Electronic MaterialsOrganic SemiconductorsPhotovoltaic DevicesPolymer Thin FilmsSolar Cell MaterialsSolar CellsBulk Heterojunction Solar CellsOrganic Photovoltaic CellsOrganic Photovoltaic MaterialsOrganic PhotovoltaicsOrganic Solar CellsPower ConversionSolar Cell FabricationSolution Processing
The power conversion efficiencies of bulk heterojunction (BHJ) solar cells can be increased from 5 to 6.5% by incorporating an ultrathin conjugated polyelectrolyte (CPE) layer between the active layer and the metal cathode. Poly[N-9''-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and [6,6]-phenyl C(71) butyric acid methyl ester (PC(71)BM) were chosen for the photoactive layer. CPEs with cationic polythiophenes, in both homopolymer and block copolymer configurations, were used to improve the electronic characteristics. The significant improvement in device performance and the simplicity of fabrication by solution processing suggest a promising and practical pathway for improving polymer solar cells with high efficiencies.
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Polymer solar cells with enhanced open-circuit voltage and efficiency
Hsiang‐Yu Chen, Jianhui Hou, Shaoqing Zhang et al. · Nature Photonics · 2009 · 3.1K citations
Natural Sciences, Materials Engineering, Materials Science +14