Advanced Materials · 2014 · 217 citations · 36 references
Natural SciencesChemistryMaterials ScienceMaterials ChemistryPolymer ChemistryPolymer MaterialsOrganic SemiconductorsPhotovoltaic DevicesPhotovoltaic MaterialsPolymer StructureSolar Cell MaterialsSolar CellsBulk Heterojunction Solar CellsCarothers EquationMolecular Weight Dependence Of Polymer PropertiesOrganic Photovoltaic CellsOrganic Photovoltaic MaterialsOrganic PhotovoltaicsOrganic Solar CellsPolymer Molecular Weight Control
The molecular weight (MW) of PBnDT-FTAZ can be precisely controlled by adjusting the stoichiometric ratio of the two monomers, following the Carothers equation. The study of a set of PBnDT-FTAZ polymers with different MWs reveals that the MW significantly influences the morphology and structural order of PBnDTFTAZ in its bulk heterojunction solar cells, with the highest efficiency (over 7%) achieved with the use of a MW of 40 000 g mol−1. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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