ChemComm
Communication
In summary, domain-like ultra-thin layers were created on
ITO by electrochemically cross-linking carbazole-functionalized
perylene bisimides, which were successfully applied in the
inverted organic photovoltaic cells to collect electrons from the
active layers. The ECP method was proved to be a simple and
effective method to prepare cross-linked insoluble ultra-thin
layers that are suitable for further solution procession of multiple
layered devices; increased power conversion efficiency was
achieved by using perylene bisimide derivative based domain-like
ultra-thin layers as electron-collection layers in inverted polymer
solar cells. Further investigation of the perylene bisimide based
cross-linked layers on optoelectronic devices is still underway.
We thank the support from National Basic Research Program
of China (973 Program) (2013CB834705, 2009CB623605), the
Natural Science Foundation of China (91233113, 50990065,
51010003, 51225301 and 61177022), Guangdong Natural Science
Foundation (S2012030006232), and Introduced Innovative R&D
Team of Guangdong (201101C0105067115).
Notes and references
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JSC (mA cmꢀ2
)
FF (%)
PCE (%)
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3
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impedance spectroscopy (EIS) measurement (Fig. S7, ESI†). Our
primary device results indicate that the domain-like ultra-thin
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electrode and act as an electron collection layer in the inverted
OPV devices. Highly efficient inverted OPV cells are expected to be
achieved by further device fabrication optimization.
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c
This journal is The Royal Society of Chemistry 2013
Chem. Commun.