ChemPlusChem · 2015 · 17 citations · 24 references
Natural SciencesChemistryMaterials ScienceElectronic MaterialsOrganic ChemistrySemiconductor MaterialsOptoelectronic MaterialsOrganic Electronic MaterialsOrganic SemiconductorsPhotovoltaic DevicesPhotovoltaic MaterialsSolar CellsChromophore DesignHeterojunction DevicesHeterojunction Solar CellsMolecular ChromophoresOrganic Photovoltaic CellsOrganic PhotovoltaicsOrganic Solar CellsSmall-molecule Organic Semiconductors
Abstract A series of push–pull molecules combining a diarylamine donor block with various electron‐acceptor units through phenylthienyl (PT) and bithienyl (TT) π‐conjugating spacers have been synthesized. Optical and electrochemical results, supported by theoretical calculations, show that the electronic properties of the molecules can be modulated by varying the strength of the acceptor group and/or the structure of the conjugating spacer. As a first evaluation of the potential of these compounds as donors in organic solar cells (OSC), simple planar heterojunction (PHJ) prototypes using fullerene C 60 as electron acceptor have been fabricated. Most OSCs exhibit analogous photoconversion efficiencies in the 1.5–2 % range. Their characteristics are discussed in terms of structure–properties relationships.
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Origin of the Open Circuit Voltage of Plastic Solar Cells
Christoph J. Brabec, Antonio Cravino, Niyazi Serdar Sariçiftçi et al. · Advanced Functional Materials · 2001 · 1.8K citations · Full text